Critique: The wobble of the pin, presents a sharp edge that cuts the sample, rather than friction. Perhaps chamfer the edge of the pin, to make sure only friction is measured.
I agree, but the wobble of pin is presented only with that 0.3mm shaft which I made from bolt. The 6mm was a real accurate shaft. But even then I believe that results are usable.
@@ManjaroBlack it will keep rotating unless everything is dead-dead square. or till there is more friction that keeps it from rotating than there is of it moving down as it wears the samples.
I have to agree this is testing a cutting edge more than surface to surface friction. The test still provides invaluable data and the use cases are adjacent concerns in many applications, thank you for releasing this video! I would be extremely interested if you get a chance to repeat the test with a slightly rounded bolt, especially on those later samples just to see if the lack of sharp edge makes a significant difference
Hi Igor! I was very excited waiting for this video - I never saw a Filament Wearing test on RUclips before... So, this was VERY NICE! Congrats my friend!
@@MyTechFun Oh, that's cool! It is nice that you can line-up your 3D Printing activity here to what you to academically. By the way, I sent you an email.
An interesting test and results. My only concern, is that with the shaft having sharp edges, it might actually be cutting the material, rather than wearing it. I think that the reduction in diameter sort of proved it, as it seemed to be machining the plastic rather than wearing it. A solution to that maybe to radius and polish the end to a mirror finish and repeat the test.
imagine if all papers have this format! that would be fantastic. Appreciate your work Dr. Gaspar. You are my go-to resource for 3D printed materials properties. I always share your videos and website with my students! Cheers!
Your tests and showcasing the differences in materials is outstanding! Not just for the mumbers, but for visualising how different materials act under the same constraints. Thank you for this input!!
Thanks for the video. I gotta get me some high stiffness TPU. It also performs well in other regards: layer adhesion, temperature resistance, impact tolerance.
liked and subscribed! well deserved for this absolutely well done test video, just keep at it, your channel will bloom sooner or later, thank you a lot for the testing, now i have to buy some tpu and nylon for my gears, cheers!
As some others have mentioned, I think the sharp edge may be causing an effect there, and I feel like it would be more representative of "true wear" if that was rounded over. That isn't to say this isn't valuable as is! Another wear test idea would be to press the side of a spinning shaft into the piece for a set amount of time/revolutions. This would be similar to how Project Farm tests the ability of oil to prevent wear.
me too! very surprising result for that part, i expected nylon to do well but not for TPU to do so friking well, now i have to decide if i go for nylon over TPU for my gears
Wow! This investigation was brilliant! I loved the custom apparatus, really shows how much effort goes into this videos. Really rigorous and precise yet easy to understand methodology, and free results for everyone! The 3D Printing community is very thankful for your work!
Thank you for testing TPU. There are a lot of RC car skid made from PLA. I've only seen one person make from TPU saying it is self lubricating and thus is ideal for abrasive applications. So happy to finally see it proven to hopefully distrust that niche market.
For next tests. Current measurement for the stepper to get also friction of the material as value. Also if your test pieces have relief holes at the end of 20mm travel, shaft will push all the loose material in the hole and it doesn't gather to the ends of the groove.
This is really valuable information, thank you for doing this research and sharing it! I hope your videos will gain more attention, they can really help people choosing the right material for a job and helped me some times in the past! Looking forward to the tests with the Igus-filaments as I have tried using I150 I180 and I190 but don't have the time to test them as scientifically as you do.
Which IGUS you suggest? If I understud correctly, they will send me only few meter samples. So, probably I have to buy some to do more detailed testing..
@@MyTechFun I can't really give a well-founded answer as my testing has been limited but I guess the I150 is the most relevant for most applications. I150 needs some tuning but then prints fine. I190 would be interesting as a comparison as it is much stiffer and marketetd to be better overall. Printing I190 on the Raise 3d Pro 2 has resulted in clogs for me so far, so I can't say too much about it. If you manage printing it, I would be very interested how it performs in comparison to I150.
Awesome video! Back in the days I had to print a part that was used sliding in a channel and after few tested I used PETG, also tried Nylon as you. TPU seems a great choice too. Keep the good work. +1 subscriber.
Very useful data, thanks. I like the comments on a rotating test piece then weighing it. It will likely prevent the clogging. I have found TPU jacketed cables are the best in the intertidal zone with wear resistance against movement on rock in the waves. So I was expecting TPU to do well, but always nice to see an assumption properly verified.
Thanks for your support. I am planning to do few more similar tests, with rotating wear (loaded horizontal shaft will rotate inside static 3D printed object).
This is the first testing of this type that I have seen. I'm so thankful for the work and dedication you have put into this and all of your other testing!
I really appreciate your dedication to presenting as proper an experiment as you can, by keeping everything as consistant and fair as possible, and developing the device to create the friction. Having quanitfiable numbers is much better than people feeling and eyeballing how the results compare. I'm working on a mechanism that will receive some wear from cables, and I had a feeling TPU would be good, but had no idea it would be this good, comparitively. Great video, thanks!
This test was very useful. I need to make some gears for the cable release of my car (EV). Instead of buying a complete mechanism, I thought I could just print the gear that need replacing. I guess PETG-CF is a good choice. Thank you! A good and very useful video!
Thank you for sharing your valuable experiment results. Most of the experimental results were as expected, but I was surprised that TPU has such good abrasion resistance.
On a previous job, I did something similar but for deformation of different filament under temperature. Testing a lot of samples to get good data is pretty tedious and I respect the effort you put in, I know there are so many hours of work in the background that you cut out for the video. Well done :)
This was a great video and look forward to the scientific paper. Please don’t let yt discourage you, your content is fantastic and it will eventually catch on. I will do what I can to share.
Nice test! General rule of thumb would be whatever filament has the hardest surface. Usually if you match two of the same surfaces, the harder they are... the better they will perform. For example, two diamonds will cancel each other out and not really cause wear do to friction. Not always the case, but usually works. A softer surface wont scratch a harder surface.
Right on time. I made some shafts made out of PLA and it rotates inside of laser cut acrylic hole. Acrylic on acrylic binds but PLA on acrylic is better, with lubrication even better with load. Eventually used a support bearing. Plastic 3D printed material is not for precision, ok for crude jobs, very hard to find the accurate tolerances for shrinkage and printing.
It seems to be an OK base line test. But the accuracy seem I little skewed, trying to put up politely as I can. I am glad someone brought this up and good to see a test on wear. Please explore this with more accuracy and a better mechanical way of achieving the wear.
I haven't seen any of your videos before, it's out for four hours and shows 2.4k views. RUclips recommended it to me on my home page. Thanks for the video, really valuable angle onto filaments, which I haven't covered anywhere before. Regarding improving your setup, I wonder if adding air pressure to clean away dust during the friction load test and then using a very accurate scale to just collect the weight difference might give you easier comparable results. The more relative weight loss the more wear was experienced. Scales are very cheap nowadays. :) Also there are those tools for measuring hardness of like surfaces, I really wonder how those materials compare with each other if at all.
Good suggestion about using weight, I think. Resolution could be an issue on cheap scales though, to get below 1 milligram you jump up to laboratory balances at ~~$500.
Suggestion, having fillets in the test specimens would save you hours in total printing time without any impact on the tests themselves, e.g. on the square area of the screws
TPU is a great material,and as for the friction it is worth noting that it has pretty good chemical resistance too and can be lubricated. I actually use it for various vehicle parts where temperature is not an issue, like intake tubes and vibration isolation parts, shock stops etc. and so far it’s been outperforming natural rubber by far and even silicone tubing in many scenarios.
This was very interesting especially with the TPU. I’m glad you are going to test it with some filament made for high wear resistance like the IGUS ones. I believe IGUS adds small bits of a solid lubricant into their filament. Another type of wear resistant filament you could try is from the company “Spectrum” (they are a European company too and advertise sending filament to people who have a good project) they make a PC-PTFE blend and a PETG-PTFE blend, the PC-PTFE claims a similar wear resistance to the IGUS stuff. They also make other very interesting filament. From what I have seen the IGUS filament is difficult to print, I have only used the Spectrum ones but they weren’t that bad to print but I do need to calibrate them further, they were very difficult to sand down to the final size though, so they definitely seem to be wear resistant.
Thank you for doing this. Very interesting and informative. Ninjaflex advertises a 75D tpu as more wear resistant than nylon. I was skeptical, but I guess it really is the best.
First of all great video! Helpful data ... couple of ideas: 1) Curious the about the rotational wear as bearing 2) could have an electrical contact that could wear through to see life between aluminum block and hss bit 3) a cheap granite surface plate as a reference surface to measure from might be worthwhile as an investment, with a .0001 indicator 4) a sleeve bearing for that hss pin may help consistency and reduce wobble
Hm, yes, all very nice suggestions. The rotational wearing idea already given by others too with measuring the weight before-after (on analytic scale). Granite surface, yes, I should buy it already (for my metal working hobby too). Thx.
@@MyTechFun I can't tell you how timely your research so it is much apricated :) Another material would be a glass filled material as I suspect it will be a better bearing surface over the carbon fiber. I think the folks you got your nylon from also offer a glass filled and so does polymaker. There are also glass filled abs and asa options.
Good idea for a test. I'm still watching the video, just jotting down some thoughts: dial indicators have some error and the amount of wear might be within error values. My first thought for measuring this would be to use weight: weight the part before, do the wear test, clean it thoroughly with compressed air, then weigh it again to see how much material was lost. Depending on the scale precision, that might be more accurate.
Hm, good thoughts, and new ideas, maybe I could repeat this test in near future with some rotating materials and measure the weight. I have some analytic scales with precision of 0.001g.
Thank you. Interesting results! I would have expected nylon to win it all, I'd never even heard of hard TPU but will check it out thanks to you. I do think a friction test would be super interesting. I often want to make washers/spacers or sliding bearings. Durability in those has never been that critical, but would still be nice to know what works best for the day that is more important.
excellent video and very timely! I have been researching coefficient of friction and relative wear for the most common filament materials as I want to print slide bearings for a new project. Before I saw your video I had settled on PETG instead of nylon because of it's lower friction. I think maybe I should try some test parts of them both and possibly include the hardest TPU I can find. I saw that Igus has filament for printing their bushings but alas, that stuff is expensive! $98/750g
Great video as always, i would have loved to see a reference filament from igus, since they do sell their filament online and it's not prohibitively expensive and has greas the same friction characteristics of the linear bushings
Interesting test! An alternative method that might remove from variables: Use a metal disc of similar width to your pin. The rotating mass (provided it has a machined edge, and not polished) should provide a consistent pressure while avoiding the wobble of a pin. Would just need to be a slow enough speed to not cause heat buildup.
Very good video, that I really enjoyed. My only advice is that you should pick up a small 12"x18" maybe, granite reference table (maybe $100), at mid to low certification, certainly if not reading each from front to back stroke on each piece individually. Great video, and am now subscribed!!!
Great testing! It's surprising that carbon fiber doesn't provide a minimum level of protection if you will, affecting some materials negatively and others positively. I wonder if it has to do with how finely it is chopped or the percentage in the material. You definitely deserve more attention from the algorithm!
for the cleaning of your test rig, you could just mount a paintbrush, or 2, on the sides, and have the part pass under the brush to clean it, so you dont have to do it manually.
I would suggest a chamfer or rounded edge on the wear tool, so that you are looking at wear due to drag and not from the edge of the tool cutting into the plastic. If you dragged the tool to the edge, it might help prevent material buildup.
Very interesting test. I am also curious which filament would be perfect for anti slip pad. I’ve tried with Fiberlogy Mattflex 40D and it is not working as I would like to. Maybe it’s about the matte version and I should try conventional Fiberflex 40D which I also have. Also - looking forward for making more tests like this video and choosing the (almost) perfect research method :)
Good work mate.as others have said i have to agree it's more cutting edge resistance than friction but still a useful test,for friction i would say a rounded pin would be more appropriate. Also measurement should have been done with a 0.001mm indicator on a surface plate or at the very least a granite kitchen counter,when measuring such small amounts the surface of the table or 0.01mm indicator inaccuracy would definitely affect consistency
Very nice testing, although personally I'd have added a round over to the rod end to make it more of a sliding test from the face of the rod rather than a cutting one from the sharp edge. Regardless, the results are still useful as there is a correlation between the two.
Very interesting test. Firstly, I agree with other comments that having the sharp edge is different from a wear test. This was useful, but it would be interesting to see a redo with a slightly radiused edge on the pin. Secondly, it would be nice to see the results with some minimal lubrication. I know that with PLA at least, there is a huge difference in friction levels with no lubrication vs,. even the barest residue of lubrication. That will likely vary from material to material.
I had that in mind, but the chamfer or rounded edges would be a problem with deeper grooves. Lubrication? Sounds as a good idea for another test.. thx..
@@MyTechFun A suggestion for a simpler test setup that would avoid the sharp edges: just press the polished side of a motor shaft into a flat 3D printed sample. The motor would need to be on a lever arm or slide. You could then either run the motor slowly in one direction to get the desired surface speed, or oscillate it back & forth. Then measure the depth of the resulting divot.
Excellent work. Very intersting. I would also like to see a wear test using a metal gear turning a printed plastic gear and also between two plastic gears. Could set torque by using the driven gear to lift a weight on a string and measure wear as the radial play in the gears.
The second set of tests with the smaller diameter bolt are not measuring the same thing, as the unit goes backward and forward its tilting the bolt creating an angled cutting edge just like when you grind relief angles causing the edge to dig in rather than rub, you need to use a rounded tip to ensure the edge does not dig in but rather rubs across, this allows tests for wear resistance rather than a ability for the material to be cut or gouged out
Nice. Thanks. It would be interesting if you could some form of test of the materials rubbing on the same material. I guess the results would probably be a bit different then.
![Jack Harlow - Hello Miss Johnson [Official Music Video]](http://i.ytimg.com/vi/Q86_nlRoIGw/mqdefault.jpg)
Critique:
The wobble of the pin, presents a sharp edge that cuts the sample, rather than friction.
Perhaps chamfer the edge of the pin, to make sure only friction is measured.
I agree, but the wobble of pin is presented only with that 0.3mm shaft which I made from bolt. The 6mm was a real accurate shaft. But even then I believe that results are usable.
@@MyTechFunalso, I’m not sure if it matters, but I noticed the shaft rotating.
@@ManjaroBlack it will keep rotating unless everything is dead-dead square.
or till there is more friction that keeps it from rotating than there is of it moving down as it wears the samples.
@@MyTechFunI disagree sorry, what you’re measuring is cutting edge resistance, not abrasive resistance
I have to agree this is testing a cutting edge more than surface to surface friction. The test still provides invaluable data and the use cases are adjacent concerns in many applications, thank you for releasing this video! I would be extremely interested if you get a chance to repeat the test with a slightly rounded bolt, especially on those later samples just to see if the lack of sharp edge makes a significant difference
Hi Igor! I was very excited waiting for this video - I never saw a Filament Wearing test on RUclips before... So, this was VERY NICE! Congrats my friend!
Thank you, I have plans for several more, similar (since I will try to write scientific article, which is useful on my workplace on University).
@@MyTechFun Oh, that's cool! It is nice that you can line-up your 3D Printing activity here to what you to academically. By the way, I sent you an email.
An interesting test and results. My only concern, is that with the shaft having sharp edges, it might actually be cutting the material, rather than wearing it. I think that the reduction in diameter sort of proved it, as it seemed to be machining the plastic rather than wearing it. A solution to that maybe to radius and polish the end to a mirror finish and repeat the test.
imagine if all papers have this format! that would be fantastic. Appreciate your work Dr. Gaspar. You are my go-to resource for 3D printed materials properties. I always share your videos and website with my students! Cheers!
it's actually really interesting that PETG is the cheapest material but is performing extremely well in the test👀
PETG has some self lubricating property same as some some of the CF ins the Filaments he showed
Your tests and showcasing the differences in materials is outstanding!
Not just for the mumbers, but for visualising how different materials act under the same constraints.
Thank you for this input!!
Thanks for the video. I gotta get me some high stiffness TPU. It also performs well in other regards: layer adhesion, temperature resistance, impact tolerance.
liked and subscribed! well deserved for this absolutely well done test video, just keep at it, your channel will bloom sooner or later, thank you a lot for the testing, now i have to buy some tpu and nylon for my gears, cheers!
As some others have mentioned, I think the sharp edge may be causing an effect there, and I feel like it would be more representative of "true wear" if that was rounded over. That isn't to say this isn't valuable as is!
Another wear test idea would be to press the side of a spinning shaft into the piece for a set amount of time/revolutions. This would be similar to how Project Farm tests the ability of oil to prevent wear.
I would have never expected the tpu to do so well!
It's incredibly wear resistant, you'll only really beat it with HDPE.
@@Rippthrough i would think that HDPE would be abraided even faster than TPU since it's more rigid
@@Person1873 Sorry I mean UHMWPE, brain fade.
me too! very surprising result for that part, i expected nylon to do well but not for TPU to do so friking well, now i have to decide if i go for nylon over TPU for my gears
Wouldn't flexible gears be a problem though@@tomaseguchi5793
Wow! This investigation was brilliant! I loved the custom apparatus, really shows how much effort goes into this videos. Really rigorous and precise yet easy to understand methodology, and free results for everyone! The 3D Printing community is very thankful for your work!
Thank you for testing TPU. There are a lot of RC car skid made from PLA. I've only seen one person make from TPU saying it is self lubricating and thus is ideal for abrasive applications. So happy to finally see it proven to hopefully distrust that niche market.
it's not really self lubricating it's just very tough, Nylon has a lot lower cf. HDPE is better for skidpans either way.
Race/FPV drones use tons of TPU parts since they're basically indestructible from impact and also do well when skidding.
For next tests. Current measurement for the stepper to get also friction of the material as value. Also if your test pieces have relief holes at the end of 20mm travel, shaft will push all the loose material in the hole and it doesn't gather to the ends of the groove.
This is really valuable information, thank you for doing this research and sharing it! I hope your videos will gain more attention, they can really help people choosing the right material for a job and helped me some times in the past! Looking forward to the tests with the Igus-filaments as I have tried using I150 I180 and I190 but don't have the time to test them as scientifically as you do.
Which IGUS you suggest? If I understud correctly, they will send me only few meter samples. So, probably I have to buy some to do more detailed testing..
It looks like I150 is the common one, unless you need some special requirement like food safe. $73 for 750g.
@@MyTechFun I can't really give a well-founded answer as my testing has been limited but I guess the I150 is the most relevant for most applications. I150 needs some tuning but then prints fine. I190 would be interesting as a comparison as it is much stiffer and marketetd to be better overall. Printing I190 on the Raise 3d Pro 2 has resulted in clogs for me so far, so I can't say too much about it. If you manage printing it, I would be very interested how it performs in comparison to I150.
Awesome video! Back in the days I had to print a part that was used sliding in a channel and after few tested I used PETG, also tried Nylon as you. TPU seems a great choice too. Keep the good work. +1 subscriber.
I suppose it's a sign of my ignorance but I am very surprised at the performance of the TPU. Thanks for the extensive testing. 👍
Awesome comparison. TPU was a surprise to me! Glad my favorite PETG did well, I use it a lot on my boat.
Very useful data, thanks. I like the comments on a rotating test piece then weighing it. It will likely prevent the clogging.
I have found TPU jacketed cables are the best in the intertidal zone with wear resistance against movement on rock in the waves. So I was expecting TPU to do well, but always nice to see an assumption properly verified.
Thanks for your support. I am planning to do few more similar tests, with rotating wear (loaded horizontal shaft will rotate inside static 3D printed object).
great findings, every time I watch your videos I learn a lot. Thank you
This is the first testing of this type that I have seen. I'm so thankful for the work and dedication you have put into this and all of your other testing!
I really appreciate your dedication to presenting as proper an experiment as you can, by keeping everything as consistant and fair as possible, and developing the device to create the friction. Having quanitfiable numbers is much better than people feeling and eyeballing how the results compare. I'm working on a mechanism that will receive some wear from cables, and I had a feeling TPU would be good, but had no idea it would be this good, comparitively. Great video, thanks!
This test was very useful. I need to make some gears for the cable release of my car (EV). Instead of buying a complete mechanism, I thought I could just print the gear that need replacing. I guess PETG-CF is a good choice.
Thank you! A good and very useful video!
That's quite the endeavor! You're a smart man. I appreciate your work. I know you put a lot into it. I enjoy your videos. Thank you!
Thank you for sharing your valuable experiment results.
Most of the experimental results were as expected, but I was surprised that TPU has such good abrasion resistance.
On a previous job, I did something similar but for deformation of different filament under temperature. Testing a lot of samples to get good data is pretty tedious and I respect the effort you put in, I know there are so many hours of work in the background that you cut out for the video. Well done :)
You should test the filament from IGUS for the linear bearings! It's super low friction!
As mentioned in the video, I will get few meter sample materials. I hope it will be enough for my testings..
This was a great video and look forward to the scientific paper. Please don’t let yt discourage you, your content is fantastic and it will eventually catch on. I will do what I can to share.
Posted on Twitter and Reddit, fingers crossed
Nice test! General rule of thumb would be whatever filament has the hardest surface. Usually if you match two of the same surfaces, the harder they are... the better they will perform. For example, two diamonds will cancel each other out and not really cause wear do to friction. Not always the case, but usually works. A softer surface wont scratch a harder surface.
Very Very Useful! I've subscribed!
Right on time. I made some shafts made out of PLA and it rotates inside of laser cut acrylic hole. Acrylic on acrylic binds but PLA on acrylic is better, with lubrication even better with load. Eventually used a support bearing.
Plastic 3D printed material is not for precision, ok for crude jobs, very hard to find the accurate tolerances for shrinkage and printing.
It seems to be an OK base line test. But the accuracy seem I little skewed, trying to put up politely as I can. I am glad someone brought this up and good to see a test on wear. Please explore this with more accuracy and a better mechanical way of achieving the wear.
thank you for conducting these series of really important tests, this is excellent data
This is an extremely useful set of test data.
This is pure gold, what a great video
Wow, I really appreciate this test! It's very useful for both hobby and work stuff for me, thank you!
Wow, great, thorough, useful, informative video, can't wait for the next one, thank you!
Thanks for taking the time to do the tests. Useful data points to have
Really great video! Thank you for your commitment for these mechanical tests for 3d printing materials! 👌👍
I haven't seen any of your videos before, it's out for four hours and shows 2.4k views. RUclips recommended it to me on my home page.
Thanks for the video, really valuable angle onto filaments, which I haven't covered anywhere before.
Regarding improving your setup, I wonder if adding air pressure to clean away dust during the friction load test and then using a very accurate scale to just collect the weight difference might give you easier comparable results. The more relative weight loss the more wear was experienced. Scales are very cheap nowadays. :)
Also there are those tools for measuring hardness of like surfaces, I really wonder how those materials compare with each other if at all.
Good suggestion about using weight, I think. Resolution could be an issue on cheap scales though, to get below 1 milligram you jump up to laboratory balances at ~~$500.
Suggestion, having fillets in the test specimens would save you hours in total printing time without any impact on the tests themselves, e.g. on the square area of the screws
Fantastic work, mate!
Very interesting test indeed!
TPU is a great material,and as for the friction it is worth noting that it has pretty good chemical resistance too and can be lubricated. I actually use it for various vehicle parts where temperature is not an issue, like intake tubes and vibration isolation parts, shock stops etc. and so far it’s been outperforming natural rubber by far and even silicone tubing in many scenarios.
This was very interesting especially with the TPU. I’m glad you are going to test it with some filament made for high wear resistance like the IGUS ones. I believe IGUS adds small bits of a solid lubricant into their filament. Another type of wear resistant filament you could try is from the company “Spectrum” (they are a European company too and advertise sending filament to people who have a good project) they make a PC-PTFE blend and a PETG-PTFE blend, the PC-PTFE claims a similar wear resistance to the IGUS stuff. They also make other very interesting filament.
From what I have seen the IGUS filament is difficult to print, I have only used the Spectrum ones but they weren’t that bad to print but I do need to calibrate them further, they were very difficult to sand down to the final size though, so they definitely seem to be wear resistant.
Way the best tests. Love this channel.
Great test, especially in absence of other data. I would suggest testing compressed air, steady or at intervals, to help remove the filings.
Great test. I will likely refer back to this many times.
Thank you for doing this. Very interesting and informative. Ninjaflex advertises a 75D tpu as more wear resistant than nylon. I was skeptical, but I guess it really is the best.
This is excellent, really surprised the tpu is so good.
Excellent content as always! Informative and well done!
First of all great video! Helpful data ... couple of ideas: 1) Curious the about the rotational wear as bearing 2) could have an electrical contact that could wear through to see life between aluminum block and hss bit 3) a cheap granite surface plate as a reference surface to measure from might be worthwhile as an investment, with a .0001 indicator 4) a sleeve bearing for that hss pin may help consistency and reduce wobble
Hm, yes, all very nice suggestions. The rotational wearing idea already given by others too with measuring the weight before-after (on analytic scale). Granite surface, yes, I should buy it already (for my metal working hobby too). Thx.
@@MyTechFun I can't tell you how timely your research so it is much apricated :) Another material would be a glass filled material as I suspect it will be a better bearing surface over the carbon fiber. I think the folks you got your nylon from also offer a glass filled and so does polymaker. There are also glass filled abs and asa options.
i use esun pla+ for skid plates on my rc cars! glad you made this video to help me choose!!!
Good idea for a test. I'm still watching the video, just jotting down some thoughts: dial indicators have some error and the amount of wear might be within error values. My first thought for measuring this would be to use weight: weight the part before, do the wear test, clean it thoroughly with compressed air, then weigh it again to see how much material was lost. Depending on the scale precision, that might be more accurate.
Hm, good thoughts, and new ideas, maybe I could repeat this test in near future with some rotating materials and measure the weight. I have some analytic scales with precision of 0.001g.
You should include all of your measurement tools in your video descriptions. very jealous of all the stuff you have!
Thank you. Interesting results! I would have expected nylon to win it all, I'd never even heard of hard TPU but will check it out thanks to you. I do think a friction test would be super interesting. I often want to make washers/spacers or sliding bearings. Durability in those has never been that critical, but would still be nice to know what works best for the day that is more important.
Best channel for filament data
Very surprising results. To be honest, I had bets on nylon, TPU would be at the bottom of my list. I need to reconsider my prejudices about TPU.
Great test Igor, thanks for posting!
Interresting video, would love to see you also evaluating polypropylene which is known for its wear resistance
excellent video and very timely!
I have been researching coefficient of friction and relative wear for the most common filament materials as I want to print slide bearings for a new project. Before I saw your video I had settled on PETG instead of nylon because of it's lower friction. I think maybe I should try some test parts of them both and possibly include the hardest TPU I can find.
I saw that Igus has filament for printing their bushings but alas, that stuff is expensive! $98/750g
Great video as always, i would have loved to see a reference filament from igus, since they do sell their filament online and it's not prohibitively expensive and has greas the same friction characteristics of the linear bushings
Yes, I got many suggestions, IGUS will be tested too (my regular mechanical testing too, not only the wearing)
Interesting test! An alternative method that might remove from variables: Use a metal disc of similar width to your pin. The rotating mass (provided it has a machined edge, and not polished) should provide a consistent pressure while avoiding the wobble of a pin. Would just need to be a slow enough speed to not cause heat buildup.
Great Video!😊😊 I would be interested in the igus wear resistant materials. You could use a rotating motion to get more consitent results.
Very nice work, thank you!
Awesome thank you 🙏🏽 super helpful!!!
impressive test, wow.
thanks for sharing your hard work with all of us 👍😀
Very good video, that I really enjoyed.
My only advice is that you should pick up a small 12"x18" maybe, granite reference table (maybe $100), at mid to low certification, certainly if not reading each from front to back stroke on each piece individually.
Great video, and am now subscribed!!!
Very nice video, would be very good to see also softer friction, something round and without sharp corners
Great testing! It's surprising that carbon fiber doesn't provide a minimum level of protection if you will, affecting some materials negatively and others positively. I wonder if it has to do with how finely it is chopped or the percentage in the material. You definitely deserve more attention from the algorithm!
for the cleaning of your test rig, you could just mount a paintbrush, or 2, on the sides, and have the part pass under the brush to clean it, so you dont have to do it manually.
Fascinating!!!
i think you could try with PP filament and PET filament. It could be promising.
Great video! Love your dryer reviews as well. Can you test the new Sunlu S4 to see how it compares to the eibos favorites?
I have 4 dryers in boxes, waiting for the review (including S4). After each review, I will have again comparison test of 5-6 dryers in one video.
Nice video. I will share this with my 3D printing friends so they can watch too.
great tests
best channel ever
Very nice investigation. There’s some very interesting results in there and I’m very curious how the materials like TPU work as bearings.
Me too, that's why it will be tested..
I did not skip video and got a gift!
I think a good addition here might be to compare with a control - such as, if possible, some sort of injection molded samples.
Interesting experiment!
I would suggest a chamfer or rounded edge on the wear tool, so that you are looking at wear due to drag and not from the edge of the tool cutting into the plastic. If you dragged the tool to the edge, it might help prevent material buildup.
Excellent work
Very interesting test. I am also curious which filament would be perfect for anti slip pad. I’ve tried with Fiberlogy Mattflex 40D and it is not working as I would like to. Maybe it’s about the matte version and I should try conventional Fiberflex 40D which I also have.
Also - looking forward for making more tests like this video and choosing the (almost) perfect research method :)
Tpe probably
Ver interesting, i hope there will be more on this subject :)
I am glad that you find the video useful. Thank You! Yes, from time-to-time it is included in filament review too (bambu ABS-GF for example)
Good work mate.as others have said i have to agree it's more cutting edge resistance than friction but still a useful test,for friction i would say a rounded pin would be more appropriate. Also measurement should have been done with a 0.001mm indicator on a surface plate or at the very least a granite kitchen counter,when measuring such small amounts the surface of the table or 0.01mm indicator inaccuracy would definitely affect consistency
Very nice testing, although personally I'd have added a round over to the rod end to make it more of a sliding test from the face of the rod rather than a cutting one from the sharp edge. Regardless, the results are still useful as there is a correlation between the two.
Спасибо, очень полезное исследование! Классный канал, желаю удачи и миллиона подписчиков!
Liked and commented. So hey RUclips, show this to more people!
Interesting video, maybe have a look at box plot diagrams and logarithmic scales. It would help to see the difference between PLA and TPU
Very interesting test. Firstly, I agree with other comments that having the sharp edge is different from a wear test. This was useful, but it would be interesting to see a redo with a slightly radiused edge on the pin. Secondly, it would be nice to see the results with some minimal lubrication. I know that with PLA at least, there is a huge difference in friction levels with no lubrication vs,. even the barest residue of lubrication. That will likely vary from material to material.
I had that in mind, but the chamfer or rounded edges would be a problem with deeper grooves. Lubrication? Sounds as a good idea for another test.. thx..
@@MyTechFun A suggestion for a simpler test setup that would avoid the sharp edges: just press the polished side of a motor shaft into a flat 3D printed sample. The motor would need to be on a lever arm or slide. You could then either run the motor slowly in one direction to get the desired surface speed, or oscillate it back & forth. Then measure the depth of the resulting divot.
Very interesting video. Definitely think this is gonna get some views
Excellent work. Very intersting. I would also like to see a wear test using a metal gear turning a printed plastic gear and also between two plastic gears. Could set torque by using the driven gear to lift a weight on a string and measure wear as the radial play in the gears.
Really interesting. PLA would be one to try for machining. TPU would be nearly unmachinable.
ABS is better for machining, PLA melts if you go too fast (personal experience)
thanks for the video, love it! did you print these parts solid?
The second set of tests with the smaller diameter bolt are not measuring the same thing, as the unit goes backward and forward its tilting the bolt creating an angled cutting edge just like when you grind relief angles causing the edge to dig in rather than rub, you need to use a rounded tip to ensure the edge does not dig in but rather rubs across, this allows tests for wear resistance rather than a ability for the material to be cut or gouged out
It seems because the smaller shaft angles enough in the bearings to really scrape off with the sharp edges.
Yes, that's why the 6mm real shaft results are more important. But to me, that 3mm shaft test is telling a lot too, even if it scrape the surface.
Very interesting, well done!
Nice. Thanks. It would be interesting if you could some form of test of the materials rubbing on the same material. I guess the results would probably be a bit different then.
Good vid mate
that was impressive!
Great video. Just what I needed. Thank you
Interesting. Would be cool to see a similar experiment with wear rates between filaments, as that’s perhaps more common…..pla rubbing against pla etc
Good idea, I became curious too
AmazinG as always! U love your channgel and learn a lot!