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Accuracy Test, wheel hub carrier - 3D scan Revopoint POP 2
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- Опубликовано: 14 янв 2022
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Wheel hub carrier forging (180mm x 180mm).
Finished model can be viewed here : skfb.ly/o8EtL
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There are many creative ways to scan and make all 3D objects, this is just an example.
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#Revopoint #POP2
Hardware Credits :
- Revopoint POP II
Software Credits :
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I will always make honest assessments and conclusion on this channel.
Measurements were taken in Solidworks by zooming in on the mesh and finding the median edge to plot against.
Initially I was surprised, and a little sceptical, on the accuracy on the 'spindle' feature of this part. This area is chemically blackened and suffered no surface damage or corrosion, therefore it was by far the most accurate to measure and scan.
The rusted areas and holes provide much more of a challenge to accuracy as can be seen. Rusted areas and pitted surfaces are seen as tiny changes in distance. Depending on the meshing algorithm, the software has to pick a group of these many different height vertices to go with it, overall it does a great job but deviances of 0.5% are not uncommon here. Remember with a measuring tool you go point to point (ie a max or min result) with the scan, I am measuring the median line so discrepancies will occur.
You would get exactly the same effect when manually measuring, and say, getting a grain of rust under the measuring surface. Measure a part 3-4 times manually and you will generally get 3-4 slightly different results. Your skill with a measuring device and also which measuring device you use can easily yield a +/-0.1mm deviance. Personally I am not a big fan of digital vernier calipers but it was all I had to hand for larger measurements for this test.
ALL scans should always confirmed with confirmatory physical measurements.
Therefore 0.1mm is generally the standard for high end accuracy, 0.2mm is acceptable, and anything lower is problematic.
I use this scanner mainly for reverse engineering, so I need high quality which it delivers over this range and I am confident in the results.
MORE tests and comparisons against industry inspection equipment will be forth coming.
Very excited to see your content on the Pop 2, had been following your efforts on the Revopoint user forums because I have related use cases (but only experience in some photogrammetry). Had no idea the 2 was coming until I stumbled upon it and it looks like it has finally reached a point of being pretty perfect for my needs and financial constraints!
Do you know or have any experience with scanning on an iPhone? I'm wondering if any scan modes are missing or whether scan quality/performance is degraded at all. If there's anything you know about this that would be most helpful - I sent a question to Revopoint but no response as yet - mostly I see talk of wifi connection for scanning on iPhone but I'd much prefer a direct cable connection and would want marker and high detail scan modes to be available!
@@diannafiredal Thanks for tagging along with my work. I don't have any experience with the iPhone I'm afraid, if I go walkabouts I have a tablet/PC and always have it directly wired.
@@JonHimself no worries, Revopoint replied and clarified the iPhone scanning must be done via wifi at this time and also uses a different algo and they recommend using a computer to connect to while scanning.
Not ideal, but I've asked them for clarification as to whether the algo makes an end quality different or if it's more about user experience.
Will continue watching with interest, and would be curious to see what the error is over linear distance, and whether these are suitable for accurately scanning large objects!
@@diannafiredal the main thing I think it will affect is the frame rate, so slower movements might be necessary, or frequent 'fusing' to dump the memory into a file on the device, this is my guess. I have a few more accuracy tests lined up, but for the entry level this device is aimed at, it blows away anything else I have seen in comparison which is why I use it, and I have access to a $80,000 CMM at work (comparison coming soon).
@@JonHimself yeah, it really does look like the best option for this consumer level and a cut above anything which has come before.
Thanks for this serious and ambitious review, Jon!
I really appreciated this one as a professional 3D-printing process engineer since 1994.
The Revopoint POP 2 seems to give very high value for money.
Yep it is better than I expected.
Thank you, I am looking forward to comparing the pop 2 to my shining 3D SP and getting some bigger scans.
It should fair well, POPs biggest selling point for me was portability and the ability to get around objects - I've not seen anything that comes close.
Thanks for this great review. I'm quite impressed by the software catching the realigning of the part in different positions. Extremely useful.
Thank you - yes the software is impressive, it can mis-align but if you point it in a unique orientation it does a good job.
Excellent video! This is more important to me than getting a scan of a person or trinket! I have the original POP so mine cant do as good of a job but I bought it for this so I can replace parts on old chainsaws and smaller engine parts like that. Would be nice to be able to print in metal but plastic should suffice for now ;)
Thanks for the comment. I used POP1 for a while and it yielded good results. The POP2 has a better frame rate so is much less sensitive to jitter and distortion in the scan. You can get parts printed in metal (laser sintering) from places like Protolabs or Hubs (formerly 3Dhubs) but it might be expensive.
try carbon fiber filament
Thanks Jon, great video! I've been waiting to see results like this with the POP II, looks like it is indeed a great step forward in accuracy!
Thank you. It is certainly a very impressive bit if kit for the cost. Still waiting to do a shoot out with an inspection grade laser so stay tuned for that. The only down size is all those scanned points soon add up to form large unwieldy files. Tracking is also improved - more tests to come when I start scanning some engine parts!
I'm actually quite impressed
Thanks for doing this, It answered all my questions. Wondeful video.
This is mega impressive. I've worked in RE for years and I'm only used to seeing these kinds of results from very high end machines. I have a CR scan lizard on the way and I hope I'll be able to achieve results like this!
Yeah the tech has come a long way - I started scanning about 10 years ago and the equipment (whilst superb) was as much as a luxury car. For this to be able to create the results we see is pretty spectacular in my opinion.
@@JonHimself Couldn't agree more.
You get my Sub. Exactly the contect im looking for to scan my VR6 block and design centre line brace and biklet mountings.
Mine just arrived, I’m going to play with it
Neat! Probably not wanted on a Esprit but an "easy" way to get the code to start to design a drop spindle to be cut out of billet.
It's going to be used on the suspension CAD model when I finish that (so much to do so little time).
your charli xcx era is giving
Thank you! that is exactly the kind of video I was looking for. It would be nice if you mention the time needed for each step. I'really looniking forward to the camshaft profile and engine scan. What would be also very interessting is a scann of the whole engine compartment or bigger car things like a whole car cabine room for example to design a rollcage in the CAD.
Thanks again. It's difficult to cram it all in but generally the scanning is shown in real time to give the viewer a chance to see what is involved and when something is changed. When I speed the video up I generally say so again it doesn't give a false impression. I will be attempting a rescan of my car at some point as the roll cage for my car project (see my other vids) will be designed in CAD. If you goto my SketchFAb site you'll see the scan I did of my car shell.
Wow, thank you for the video. Surprisingly accurate. If possible, could I recommend you add headlights to your scan list if that falls within your project?
I'm interested to see how this would fare with small parts jutting out of a main body.
Thanks for the kind words. I'll see what I can do, however I don't think the scanner would have issues with it as long as you are also tracking something else in the back ground - like when I grabbed the spindle in this video.
Hey thanks for your Video.
I use the Pop 2 for reverse engineering as well. Iwant to open it up in solidworks after scanning but it's just possible to open it as a graphic data and not as a volume-body. I want to make a cavity from this scanned part but it's not possible for me, do you have any tips or a solution for that ?
Thanks a lot in advance !
Yes, what you need to do is goto:
File > Open
Then select MESH FILE from the file type drop down.
Above that should be an OPTIONS... box, hit that and you should get 3x options for opening mesh files:
Graphics / Solid / Surface
Select Graphics
If its slow, you need to decimate the mesh to reduce its poly / vertex count
Also see my video I made on Blender on how to prepare scans.
Turning on Clip Plane will help with the table.
Black doesn't normally reflect enough IR to warrant a clip plane which is why I use this turn table or my clear glass one. As you can see it was a total one off, I've never had a return off this table and to be fair it was the simplest repair.
On the video I should be releasing tonight (Ferrari Manifold) is the only time I've ever needed it because the object is so big it overhangs.
I have been following your videos with attention. 90% reviews of the scanner are about scanning figures or people.
Been waiting for the release of this scanner to use it in my business for reverse engineering and 3D printing of some European classic cars parts. The quality and accuracy of this looks fantastic. I wonder, how does it works with small plastic and mechanical parts?
Yes, this is why I have chosen to do some more varied applications with the scanner. My background is mechanical engineering so there will be a lot more of this to come. I was shocked how well it scanned the threads so smaller items I would have thought would be fine. Stay tuned for more updates, I plan on doing my Lotus engine in CAD with use of the scanner, it will be interesting to see if I can scan the Camshaft profiles. If you have a suggested part you want to see scanned, let me know and I will see if I can add it on the list.
@@JonHimself than you for your opening. I mainly restore classic Renault's. I also fabricate and sell various new parts for them. This type of technology will allow to cut engeering costs when it comes to mould or casting production. You know how it goes, the price for designing and fabricate a moulded plastic part is very high when you work with low productions.
I would love to see how it handles small parts like gear knobs or plastic trims. Up to now I can't really tell if the scanner can produce ready to 3D print prototypes just for fitting and scaling purposes or if the mesh will need a lot of work.
Again. Reviews up to now are really not detailed. Even the official videos lack this kind of work.
@@vitorcosta5185 you'll need to do some post processing to get a 'water tight' model for printing. I recommend 'Meshmixer' for this job as it has a very fast and effective hole patching system (see my fish video). Blender is my goto choice for working with meshes, its fast, easy to use and has so many features. If you visit my sketchfab page (link in description) you can see all my other test scans including a car, bumpers and so on. I will be adding more in the future.
any examples of large objects? like surfboards 8 to 9 feet long? how would you do this?
Not scanned in ages - sadly the project I wanted to get into has been postponed. Problem with large objects is error drift where the scanner cant maintain accuracy over such a distance. If I were to do a surfboard I would use marker dots and lay the board on top of a large cloth sheet and crumple it slightly. This gives the scanner some shapes to lock onto as well as using the target dots. There are other methods other than scanning you can use for large objects such as wraps, co-ordinate measurements and also using a photograph and tracing into CAD.
subbed
Can you scan an item and then convert it to standard engineering drawings? My company is looking at doing this rather than hand measuring, creating mechanical engineering drawings with angles and exact lengths/ thicknesses of pieces and then converting to a CAD/OBJ/STEP format. Thanks.
Yes and no. I'd pitch this as a good thing to buy to trace complex shapes, but for engineering nothing beats manual hand tools and skilled operators. the scanner does a great job as can be seen but it should always be confirmed using the appropriate inspection tool - depending on your manufacturing tolerance requirements. You also have to look into a thing called design intent, just because the scanner measures something doesn't mean its not worn or deformed. The spindle on this part is slightly undersize for the bearing due to wear. So whilst the scanner is correct, it is copying an incorrect part, which you may end up translating into reverse engineering.
I have some great tales concerning that !
I might do a video on converting this model to CAD soon as it is the most popular video by far.
Are you measuring the hub based on sketches you created using the mesh? If so, are you eye balling the sketch or are you able to measure off of the surface of the mesh?
So after bringing it into Solidworks I zoomed in and placed the lines to an average of the surface, if that makes sense? Due to the 'noise' in the scan and previous experience I feel this is the way to achieve a fair best fit. You could say I was eyeballing it, but I'm zooming into the absolute macro level to do so and way below the tolerance of the scanner.
Subbed! You mentioned in the pinned comment that you use this for RE. Do you just import the STL into solidworks to use as a reference and build a new part around it? Or do you use some other RE software like geomagic or xtract3d?
Thanks for the sub :)
I use a combination of tracing the STL and physical measurements. The scan is perfect for checking the work and drawing the correct sections.
Have a look at the wheel video I did, at the end - ruclips.net/video/UhkbbzL-NLs/видео.html
I haven't uploaded in a while because I am going to do a complete series on scanning and CAD'ing an entire engine next, as the car parts seem pretty popular.
I have used geomagic, but I do like to fly on manual - I find it relaxing and keeps the skills sharp. I like to use as many techniques in models for the same reason, but I should try it again from time to time.
its the best scanner,, but how can u fix the cordinate system
Is it possible to modify the CAD part in solidworks? Having some ideas on scanning, but then adding baseplate or other "accesories"
You can, but Solidworks is not a good tool for this. You're better off using Fusion 360. Solidworks is just not geared up for this work, so I usually import the scan as a graphical body (mesh) and trace it. i have done this part, I may do a quick video on it later about tracing to CAD as a parametric model.
@@JonHimself I see! Would be interesting. Opens up so many possibilities 👍🏻
Can't wait for mine to arrive! Did you have to use baby powder or something else the upright or did you just scan raw shiny metal?
Also I assume you are using a pc for scanning, have you tried a mobile phone/tablet at all? How does it compare to the pc?
Yes, talcum powder was brushed on or it would have problems with high reflectivity and dark areas. I try not to rely on it unless I am in a rush or the object is complicated like this. I only scan on the PC, not tried a mobile device yet - I assume it would be slower but as I say I've not tried. If I go mobile I have a flip screen laptop.
Nice video. Maybe it's a n00b question... If you were to draw that "thing" on solidworks, how much more time would it have taken? The scanned workpiece post processing is easy as just correcting global measurements on what you need, or there are some other complexities that are hard to correct, as it's a solid piece with several different dimensions on a plane?
I ask this because in my company we make lots of jigs and fixtures based on foundry casted products. We also cast some complex replacement machinery parts, that for drawing just 1 or 2 of them would take lots of time, but maybe with the scan and post processing we could save what... 1000% of the time?
This looks as the price/performance option.
Great question! In short, the more time taken, the more accurate a drawing should be. If you look at the end of my Wheel Scan video you'll see just how quickly I traced the profile (albeit at 3x speed) to make the wheel, in total that took me about 5 minutes, to measure would have taken over an hour! So to answer your question, this hub would take me about an hour to model using measuring tools etc. Using the scan I can save 15-30mins because I can trace the complex curves and be more accurate - the more curves the quicker the modelling. A final bonus is that by looking at the scan you'll see if you have made any drawing errors - this reduces wastage. The amount of times people make dimensional errors such as reading "154mm" and putting in "145mm" into CAD is remarkable. Mis-reading measuring tools such as micrometres, and also funny guys zero'ing your digital vernier to +1mm for example...... it all happens!
Scanning is great tool for copying complex shapes and checking your work, but I generally use it in conjunction with other manual methods.
I've actually got to produce a CAD model of this part for my race car so maybe I'll do a video on it.
@@JonHimself I measure structures to do as-built architectural drawings, and the frequency that I either make a writing error (writing 10’-9” instead of 19’-10”) or a reading error (the opposite) is probably honestly at least once per job. And that’s from my own notes! I spend *so* much time just trying to figure out where I went wrong, and I’m relatively good at this.
I convinced my firm to purchase a Leica laser scanner, and I’m critically excited about it. In my researching, I just bought a POP2 for my own use, and this video makes me so much more excited to scan things. This is for finer stuff than buildings, but this tech totally changes my world. We can duplicate hardware details, fabricate brackets, print trim transitions, scan mounding and trim for *perfect* replicas… getting excited!
@@Flumphinator sounds good, yep laser scanning has saved me a lot of work in the past, especially measuring impossible angles and complex organic shapes.
I’m a new user of Solidworks. When importing meshes does SW default to 1:1 sizing or do you have to scale it somehow?
The scanner produces the dimensional data for the 3D object. I usually convert this into an STL (if there is no colour data) from there the 1:1 ratio is preserved. Solidworks imports at a 1:1 ratio but it is always best to check. Programs like Blender work in metres by default so if you save directly in and out of there you end up with the scan scaled by 1000x
Purchased one right after watching your videos! This is the review I needed to close the deal. Now I have to rescue my copy of Rapidform Xor from my old hard drive. Seems like you convert the original.obj into a file SOLIDWORKS can import right?
Yep I use .STL all the time, for no other reason than I've always used it.
FYI, not a hub. That's a spindle mounted in a knuckle. Together called a spindle if talking about the wheel or bearings, but if the conversation was focused on suspension it would be called the knuckle. A hub is a feature or part of a component where that component interfaces with some kind of shaft (not counting the bearings).
Yer right, but the scanner is quite accurate wouldn't you agree ? 😋
The part name from the IPL is 'Vertical link' which is a bit vague - perhaps I could get away with hub carrier ?
@@JonHimself Jon, excellent work. I scanned the same part (although from a 1990 Chevrolet Camaro) to reverse engineer and redesign to adapt to a sealed bearing and away from the spindle/packed bearing original design. This allowed me to use a sealed bearing which has an ABS sensor to incorporate ABS into my car. I used an Artec Eva Lite (no color capability) for the scanning. The Revopoint Pop 2 appears to have very similar results for 1/15th the cost! I saw you use blender and solid works for your reverse engineering in your videos and am impressed with the workflow you have developed. I am using Geomagic Design X which is very powerful but much too expensive. I think I will be buying this scanner. I ordered a Creality Lizard prior to coming across your videos but the Revopoint looks very good indeed. I will keep tuned in for your restoration video on your Lotus. Enjoyed the FEA analysis of your the frame flexing issue and look forward to your modifications to address the issue. I am also a mechanical engineer and use 3d scanning, CAD, CNC machining, waterjetting, and FEA analysis on my personal car projects.Thanks for your videos. Here is a link to the spindle I designed in case you are interested. instagram.com/p/CPZXHaujdcQ/?
@@curiousumscientia3648 hey, grey job - love seeing other people's work. Yup I def should have been getting commission from these vids :D
There was a software update a few days back which has improved it more - just did a test scan of my cylinder head and it came out really nice. Not scanned for a while and I need to get back on the old proverbial horse. Thanks for the feedback.
@@JonHimself thanks John for the reply. When is your next video coming?
@@curiousumscientia3648 Yes I know things have been slow. I put myself under too much pressure to get videos out and got a bit stressed to be honest. Right now I am awaiting the calibration update, I'm not too happy with the current software, it doesn't seem as stable.
The next project was the engine for my Lotus but I have been totally swamped with research, the parts are also not cleaned yet and to top it off I'm in the middle of changing jobs :D
The engine will happen so keep the faith :)
I'm completely new to the world of 3D printing and am only considering it since there's a couple small parts I need that nobody seems able to make. This seems like a good way to duplicate the parts I need.
That said, do you have any experience with the metal filament from Matter hackers?
No, I only print with PET/PLA - if I wanted to get something done in metal there are many rapid prototyping companies out there who have many material / processes you can upload the file to and quote for parts. Can be expensive though.
Wie wird der scan in Solidworks auf den Ursprung ausgerichtet ?
Bei mir liegt das Modell immer irgendwie in Raum... 😔
ich hoffe das hilft ? ruclips.net/video/vn9vVU41uzE/видео.html
what tripod set up are you using in this video? I have a pop 2 and I'm in need of a better tripod than what came with my scanner...
I use a K&F tripod. A microphone arm works a well.
@@JonHimself thanks... shortly after I asked you, I found a K&F tripod but went with a slightly different one via Amazon. thanks again for replying
@@zeroswings2 no problemo
Can you scan something bigger probably some grille, fender, bumper hood etc and show the result would be very appreciated.
If you go to my SketchFab page (link in description) you'll see a car bumper and a scan of a car body shell there.
I have to rescan the bumper in the future so I will probably do a video on it.
Jon, do you think it would be possible to scan the knuckle hand-held while still on the car? E.g., wrap the wheel well with a white paper, dust the knuckle, etc? My goal is to make a jig for removing a frozen bolt. Something like this: ruclips.net/video/p5BLDNAepbs/видео.html . Thanks for the video!
I would have thought so - the main enemy will be range, being too close. you might have to get creative but that's 1/2 the battle sometimes.
Can anyone out there compare this to the Scan Lizard? I have looked all over, and can not find any direct comparisons between the two.
Nice video! How do you think these would do for scanning vehicle front end / chassis (for bullbar mounting) and engine bay areas (for air boxes) etc?
Thanks - should be ok, it take a bit of practice though. See my Sketchfab page (link in description) for some of the scans I have done for my Project GT2 car.
@@JonHimself appreciate the response! Will check it out. They look fantastic but portability is key for me, I don't need a fancy paper weight haha
@@OffroadAddictionTV thats why I bought the POP scanner. I have access to a $100,000 CMM and laser head at work but I cant get it into the areas I need and cant take it out of the factory.
Can anyone out there compare the Revopoint Pop 2 to the Scan Lizard? I have looked all over, and can not find any direct comparisons between the two.
y tengo un revopoint pop 2 pero no he logrado escanear nada se pierde a a cada momento, es pesimo este escaner
Scan a d&d mini figure for the ultimate details torture test (vs software taking a fuzzy point cloud and just turning everything into a blob). 👍
Also, did ya get a CR-Scan lizard from creality to compare?
I might try a figurine soon, I've never actually scanned one.
No lizard here, from what I have seen it is very similar to the POP2 - if Creality wanna send me one I'll happily put it thru its paces 😋
I'm finding the POP 2 to be worthless so far. The only thing it can scan is the little bust that comes with the kit. Truely disappointed. I'll continue to review your video to see if I'm missing something. Thanks for your video.
And this vs Creality Lizard ?
No Idea, I don't have one of those scanners to compare
There are 10 times more expensive scanners work worst than this one
Yep - I've used some of them - once you dial the POP2 in it's a great bit of kit.