Print Shoot Repeat Melted My Orca
HTML-код
- Опубликовано: 11 сен 2024
- @PrintShootRepeat and I did a bunch of filming together, including a lot with the Orca. In this video I'll do a bit of a behind the scenes about the issues we had, and observations I made on the Orca.
The information contained in this video is for educational purposes only. It is not intended to be a substitute for professional firearms training or instruction. Safety is paramount when handling firearms. Always follow the four rules of firearms safety:
Additionally, it is important to be a law-abiding citizen when owning and using firearms. This includes understanding and complying with all applicable laws and regulations. If you are considering purchasing or using a firearm, please seek out qualified instruction from a reputable firearms instructor. BY WATCHING THIS VIDEO, YOU AGREE TO THE FOLLOWING: You are of legal age to own and use firearms in your jurisdiction. You understand and will follow all applicable laws and regulations related to firearms."
I now have visual confirmation that PSR is not Hoffman, for this reason I lost a bet, and now owe someone 5 bucks
But he does bear a striking resemblance to Full Tac.....
PSR has at least 20-30 pounds on hoffman lmao
One man pumps iron, the other runs distance.
Their personalities are so different.
@@geekinoffdabean6639I doubt that, he's about 6-8 inches shorter, depending on whether Hoffman decided to wear shoes and socks today. PSR might look heavier, but short dudes always do. They usually aren't.
Not sure if PSR is shorter than I imagined or if Hoffman is taller than I imagined. Either way you two are fucking legends👍👍
👍 yes
I saw psr in a barrel so he fits in a barrel
PSR self-identifies as a manlet.
PSR is about the size of a middle schooler and uses Christina Aguilera style camera angles to look taller
@@BangBangBang. He's funny af tho
Great video Tim! Excited for the next collab video!
yea buds keep up the content...both yas
As a lefty, I really appreciate the brass going forward instead of into the side of my arm 😂
Yup. That was one of the goals.
As a guy that works with plastic, im not shocked by polycarbonate fractures. The stuff is brittle at the best of times. And when temperature extremes occur, that plastic doesn't seem to take it at all. Now.. mineral composite HDPE takes heat. And as far as I can tell, the material i work with is ridiculously close to UHMWPE. It seems you've come up with a solid design, mostly let down by the material available to you. And yes, HDPE is a nightmare with material shrinkage. Ill be working with a coworker to develop something. I wanna bullpup a JAKL.
How can we follow along the bullpup build when you get that going? That sounds super interesting. I’m a carbon fiber guy and have been itching to start building components for firearms these days. Any additional design and build content will tickle my fancy
The melting issue with the PLA+ Orca maybe related to heat dissipation.
There have been some studies looking at PLA for its insulation properties, including the differences of how its thermal properties change with annealing.
Each time you fire the weapon and the barrel heats the polymer, the slow cooling that follows, annealing, changes several of the chemical properties of the polymer, including its thermal conductivity.
You might be able to reduce these changes by creating or adding a sort of vent system (such as on air cooled engines) by adding metal fins or studs in the polymer, preferably ones which either contact or come into close contact with the barrel and chamber assembly. Copper or Aluminum would be best for this.
The idea here is to increase the surface area of the metal and expose it to open air in order to facilitate heat dissipation, allowing it to cool faster and to impart less of its thermal energy into the polymer.
Something like drilling and then adding copper / aluminum screws/studs/bolts into the side of the Orca in front of, above, and below the chamber to increase surface area, and allow for greater heat dissipation may be worth looking into. (Just an idea, you are the design guy, and your weapons are already excellent).
It’s absolutely possible because we are making suppressors out of PLA+ now that don’t melt and can handle heavy usage.
The Orca is built on the bones of the AR-15 but it's an interesting design form an aesthetic POV. I find the smooth lines pleasing and refreshingly different. I just wish you had the ability to print one in metal. I know that they make a printer like that, but it's very expensive, and the process is more complicated than printing with filament. The print has to be baked at high temperature for a while to solidify the amalgam, but the result is pretty amazing. Just imagine the Orca made in a polished chrome finish. Now that would be a real head turner, and it would probably end up featured in a science fiction movie. Everyone would want one.
I find the materials science behind 3d2a absolutely fascinating, and i look forward to getting more into it.
As someone joining the community from machining firearms and working with metals in knifemaking, the similarities in materials science is amazing.
From the grain structures of metals and the layer lines of prints, to the wall thickness/infill strength testing, to the choice of alloy steel and the choice of filament type to achieve a goal... youd be surprised what similarities there are.
I work in composite manufacturing basically building carbon fiber structures for aerospace. It’s also similar. Turns out once you have a firm grasp on one type of manufacturing there ends up being a ton of that info that transfers over into other fields. Even things like woodworking can be similar to carbon fiber or fiberglass, and building tooling from anything from foam to wood and bondo…. Blah blah blah. The point is I’m also excited to learn more about 3D printing and find new uses for it, maybe even as a sub structure to wrap in carbon fiber for additional strength.
Manufacturing is badass and these guys make it exciting building things we are interested in
I don’t think anyone is that surprised lol. 3d printing (especially 3D2A stuff) is just like CNC metal work but with plastic. That’s basically the only difference.
Hoffman your a genius and a gift to the community. PSR your a freak proudly representative of the rest of us freaks, I salute you, you silly silly person, thank you for everything you do as well. The world needs more of both of you. 🙏
PSR fanboys are so fkn cringy
So the only thing I did differently was a carbine tube instead of a mid length tube since I didn't use the same barrel. I realized that later when the kit had the mid length lol but luckily a local store had the carbine one (Funny thing is the store owner had an orca himself haha). Went into a shooting range yesterday to test it out and had an ejection issue but luckily after 10 minutes or so I heard a click and from there it didn't have a single issue (120 rounds shot). I'm a software engineer that has always wanted to venture into making more physical related items but wasn't sure where to start. Thanks to you and this project for kicking the door open to all of the possibilities I can explore now!
Been watching both of yall for a while now. Keep it up!! We (2a community) appreciate you and we absolutely need you. Thank u frens
we dont need criminals like this get your tax stamp
New to your channel but I appreciate the insight that you bring to the 2a community. CAN’T STOP THE SIGNAL 🐍 🇺🇸
Man what y’all kids are doing is freakin AWESOME and I’m here for it 👍
Watched you on PSR channel so Im here for the support, great to see you guys do a colab, you guys work well together.
I have to say that it's fcuking AWESOME to see you two legendary men doing a video collaboration like that!
Would love to see a metal barrel nut, I’m waiting for a few little kinks to be solved before I print the orca, the new lower he’s coming out with I’m really excited for💯
this would be very easy using casting. 3d print a barrel nut, insert into moon sand, pour molten aluminum. viola lost pla casting
I think something integrated into the barrel nut like fins to help spread out the heat from the chamber area would help PLA+ uppers handle the heat far better.
The Hoffman Tactical x PSR crossover is better than any Marvel team up
One design suggestion that can be useful for future designs:
a simple way of making the parts way stronger on the z direction is to use long and thin prestressed threaded rods pre compressing the part in that direction. this way the inter layer cracking is greatly reduced making the whole build much tougher, plus it is really cheap since threaded rods are redly available on any hardware store. this way you could reduce the sections required or use lower strength polymers.
Your making leaps and bounds for freedom, keep up the amazing work
i think the ejection is related to the geometry of the rebound plate being round it seems depending on where the brass collides with it creates a different deflection angle. the reason for that could be irregularities in the speed of the ejecting brass.
Wow, 2 of my favorite guys in a "colab". Lets see more of this.
from what i know with the platform the inconsistency you have in rotation speed is directly affected by how seated the extractor is on the rim of the cartridge. this is also coupled with ejector spring. the ejector spring is subject to efficiency loss's/rate changes based on foreign debris in and around it. brass particles and carbon do work their way in there occasionally and i would recommend removing and cleaning along with a fresh extractor and extractor spring with stiffening insert. the insert for the spring if you are not running one will guarantee a reliable deep set on the extractor. do a control test first thing to verify if this fixes things on the next range day.
the project looks really good and hope this info helps. best of luck.
PSR sent me here and I just subscribed with the bell turned on. Looking forward to seeing some of your content.
I would commit acts of treason (we already do) to collab with daddy PSR 🎉
So glad you got this dude.
Just watched your polymer lower video. Great job!
@@chemistryofquestionablequa6252 thank you for your time; seriously appreciated
Have always had trouble with the polycarbonate pieces you send with your super lower kits. Printed my own in cf nylon and they hold up a lot better
Would be a shame if the super safety made it onto the odd sea
too late they stupid enough to share the file
I had my doubts about plastic until I saw Gun Jesus with a monolithic Remington nylon 66. I know plastic isn't exactly the sticky sap that comes out of trees, but it should be as strong as wood. Just making a huge mold kind of defeats the purpose of using a 3d printer, but I'm sure it can't be too hard to engineer a moving feed tray to print longer items with the same burner
The young bloods of 3D printing, pushing it forward 😎😎
This is such a DUDE project. So dope
been a big fan for a long time I AM REALLY glad your videos are getting more professional and im even MORE GLAD you are getting noticed more and talked about in the 2a printing community. im really into this stuff my self but i keep my privet life privet, so that that. ive followed you and ive always enjoyed the builds you have done and you look at it from a engineering prospective from the beginning which is nice, the other builds available at the time were janky to say the lease with only the u bolt being the most realistic option till i found the hose clamp hoffinator build. im still rockin the v1 hose clamp.
You could do away with the brass deflector altogether because it was introduced to the A2 design as a request from the military, supposedly for left handed shooters. But the AR-15/M-16 and the later model AR-15/M-16A1 didn't have a brass deflector at all and left handed shooters don't have problems lacking the deflector. I don't know how long or wide the Orca ejection port is compared to an AR-15. If the ejection port is longer, the casing will rotate more before it hits the deflector. Do both rifles have the same buffer springs, buffer weights, and same manufacturer of bolt carrier group? Same barrel manufacturer? Same chamber and barrel surface treatment (chrome or melanite)? If one rifle had more rounds through than the other, that could be a factor, it's got more wear or it's better broken in/polished from use.
I also thought the high speed footage was interesting because you can see a gap open up between the upper and lower receiver halves when you fire the rifle. That could be a cause of the random ejection pattern, the flexibility might be binding the bolt carrier and it only happens during live fire.
Awesome progress! Can't wait to see what you come up with when you've got an EDM setup.
Thank you! I'm stoked to start playing around with EDM, and also to see what you come up with next!
Congratulations and thanks on designing the Orca! Super impressive work, dude!
Can’t wait to see more vids
I love that plink plink sound! Could the ejection angle be caused by variations in amount of powder or bullet sizing leading to variations in recoil?
It could be, some of the ammo was questionable.
I love the 2A 3d print community. Just full of super cool people.
Any chance you'd consider revising your design to include a free floating aluminum tube to replace the forward handguard? It'd eliminate so many of the heat related issues.
All heat originates from the barrel and the gas impingement system. Aluminum is a very good heat conductor, it's not as good as copper. So maybe side by side test copper vs aluminum?
But as per the space guns comment from back in January, the idea of active cooling would be cool AF too. If it weren't for pesky laws, I'd deffo be down to remix the handguard design with active cooling. CPU cooling usually involves the use of copper heat pipes. How many CPU coolers would be needed to maintain a barrel's temperature from climbing under continuous fire?
It'd be sick AF for a 3D printed AR-15 to have RGB LED active cooling. It'd be a literal sci-fi cyberpunk gun.
Listening to Kodak Black and watching the two best guys on RUclips.
That they can walk into a cell to prove how real they are truly boggles the mind
@@luislongoria6621 I listen for comedy.
ooh hell yea
MY SHIRT!!!! HE’S WEARING IT
Where can we get some?
enjoyed The video of you n won, there was plenty of information that was recovered. i appreciated how thorough you guys were. dope video dude.
I watched both videos. Have to support ya both. Good work.
This style of video is great also. Very informative.
Awesome collab, great vid, thanks!
On the topic of polycarbonate, I bought many reinforcement kits and I've noticed on my 6.5 grendel AR the front takedown standoff cracked on one side so I was going to print some new ones from PLA max and see if it can handle it better. The lower probably has 30-40 rounds of 223/5.56 and 40 rounds of 6.5 grendel through it at the time I noticed a crack. Still operates fine and is still on target.
I've got a 3.0 lower with a PSA upper kit on it, and it's survived a few hundred rounds of hoffman's fun printed trigger firing, in rapid succession. Mine is made with the PC front brackets as well from his site and I haven't seen any signs of failure yet.
I honestly wish Tim (or someone with the aptitude) would make a hybrid design that copies the U-bolt V2's eye-bolt use, instead of trying to make the front pin holes a printed part. It'd utilize the layer orientation strength better than any print ever could and would be way more permanent.
Sorry, but PSR introduced me to Hoffman. My condolences sir, you have created a whale of a rifle that has captured my very dreams...now I can't sleep until I am finished learning from you O_O teach me Master! Lmao🤣
2 of my favorite youtubers! great video!!
This is awesome I live watching this in slow mo
Awesome loving it🤙🏽
Keep up the good work Tim! I love the technical content!
Ca!e from PSR channel.... Awesome content... Any friend of PSR is a friend of mine💯💯💯
Curious if you have thought about the PET-CF from Bambu Lab. Apparently it can withstand tons of heat. I thought that might be something you might test sometime. Your testing is really thorough and helpful to me in other aspects of 3D printing.
I've got a roll of it I need to try.
Nice work, men.
This mixtape is pure fire 🔥🔥🔥🔥🔥🔥
That video is awesome! Thanks, guys.
Hoffman, as a side note, if you're interested, would you mind making an Orca out of low-melting point metals? Icm curious to see how low-melt metals would compare to 3D printed materials, I'm sure I am not the only one. I've seen that people have used pewter to cast figurines that were 3D printed after making a mold, I imagine somethinf similar could be done with the Orca. (Although I imagine it would be very heavy compared to a standard AR-15 it would still be beyond awesome to see someone make a metal AR-15 from 3D printed parts.)
Could try wood's metal that's used for chamber casting, but aluminum is easy to melt and cast, may as well use it.
From what I understand, pewter/aluminum casting results in shrinkage when employing the silicone mold casting method, which when you're attempting to make functional mechanical mil-spec parts can be a big issue. And apparently air bubbles compromising the structural integrity and strength of the cast part can be a problem aswell. Ok for toy figurines, functional mechanical parts which are subject to lots of stress and have to be able to withstand high pressures without failing not so much. Although there probably might be ways around those issues for experienced casters and metalworkers.
@@enki6676 I'm not sure how many hotplate magnetic stirrers you'd need for the size of your mold, but it's the thing I always think of when the eggheads weigh in. I know they're used in all stages of the industrial manufacturing process, but I don't have the exact specs for how they're incorporated in relation to the size of the crucible. I think Fat Electrician could probably provide a better technical breakdown even though it's NileRed territory
HT=Legend
Where did you get the t-shirt? I want one.
Need to get a FLIR and do some shooting with it. I bet you find some interesting data that alters your design.
Phone modules are cheap too
Epic colab!
I know that bolt velocity can have a large effect on your ejection pattern. You may have some inconsistent ammo that is causing more or less bolt velocity per shot, which cause the erratic ejection.
Normally this high bolt velocity would cause a more forward ejection pattern, which would indicate a gun that is over gassed.
An under gassed gun would have poor ejection, or fail to eject.
Try using some more consistent ammo and see if this random ejection pattern resolves itself before you go chasing ghosts.
Is the difference in ejection due to the next round coming up in the mag, whether it is on the left or right side of the mag? This could explain the different ejection patterns.
Here from PSR. Love your stuff man 👍. I'm subbing.
I have been waiting for this collab
Do you use a pencil barrel specifically to get more heat on your parts for testing or for what reason? I understand thicker barrels heat up more slowly but retain heat longer. I'm curious to know what effect (if any) barrel thickness has on the Orca design.
It was strictly to keep weight down. I've actually not noticed a big change in heat issues.
Why not electroplating tin on surface of hybrid Metal parts and Chromium acid dip?
So the next real hurdle is to reduce the heat accumulation from the ammo. Maybe we should start really working on plastic ammo? Or plasticized ammo? Maybe even work on careless 3d printed ammo.
the collab we all needed
Robert McNamara (left) visits California to test fire Eugene Stoner (right) 's first iteration of the prototype AR15. colorized circa 1961
It would be interesting to see how this would do on the 9 Hole review course, when its up to your standard, of course
This ∆
Legends... both in one Vid!
great product. very impressive
I love the orca, but what I would love even more if it was in 308.
Hm...
well just switch the upper assembly, oh wait gotta make a whole new plastic case
@hoffmantactical Have you considered/ experimented with using forged (molded) carbon fiber for stressed components, in particular, the breakage-prone clips? I have looked into the relative strengths, as tested by others, and I think printed PLA molds in a vice or using bar clamps to mold real CF clips would make this as attainable as a full printed build with enhanced durability.
I forgot about the ejection issues. Have you settled on a choice for nylon like 6 or 12?
For now, it's PA6. Less creep. But, I still need to evaluate the blends from Polymaker and Bambu.
You guys rock!
PSR brought me here
Can I recommend the notion of more aluminum banding on the handguard. Aluminum conducts/radiates heat faster than a thermoplastic like PLA etc. It may not be significant but it could help to increase the rate of heat dissipation, keeping your PLA cooler.
you know one of y'all should sell some of your 3d printed accessories & parts, for those of us that do not have or have access to a 3d printer, such as stocks, pistol grips and other parts etc.. I know you make some furniture I would like to have for my AR, that I cannot get without buying a 3dprinter
Hoffman taller than psr?? 🤯 man has the fountain of youth
Great video!
HE’S WEARING THE SHIRT!!!!!
do you know where he got it from?
Definitely dig the progress of this design, i never thought i'd be looking at a full plastic AR that runs this good. It reminds me of the xm8 trials with HK, if i recall the xm8 suffered similar problems with melting and losing accuracy with heat extremes. I believe a complaint with the majority polymer G36 even was that in the middle east during intense combat it would lose accuracy. Do you think electroplating metal on the parts that suffer the most impact in the weapon system would increase their longevity or would that be aesthetic and superficial?
I need that dual wielding orcha shirt
If the material wants to bounce use it too your advantage 😎
Yup. Pretty much.
@@HoffmanTactical would love to see a fgc9 with a super safety
At 9:20, it doesn’t look like the brass is rotating at a constant velocity. I looks like it’s catching on something and speeding up half way through the travel. Could this be a magazine related issue? I’m thinking the rim of the ejecting brass could be hitting the rim of a round in the mag or something like that.
Or maybe the BCG is getting hung up occasionally, giving the brass more angular acceleration after it’s already started extracting
Woo! Collab!
I can't get enough Hoffmann
Hell yeah, Boys!
Nice! Interesting! Question! Probably stupid would it be possible to electroplating carbon metal unto the PLA plus for more strength and stability?
I admit, I’m disappointed you two were running drills barefooted. Still enjoyed both videos regardless. Great work out there, can’t wait to see what you come up with next.
Gamers touching grass rofl
So something i didn't think about when watching this video the other swap bcgs and see if the ejection trend continues, the spring/oring under the extractor could be getting weak, or the ejector plunger could be getting weak
Do you have any plans on releasing the files for your super safety on your site? I Can't wait to print one.
not likely, its been a functional design for over a yr but when ATF targeted the FRTs, he canceled the release yet he still used and spoke about them in his vids. So dont expect it to EVER be released. It's likely just a release for those that he knows personally and IMO will never be anything more than that or he would have released it LONG ago.
Have you considered rifle length gas tubes? As that would allow better dwell time and maybe enough cooling to help allow it to shoot for longer without an issue with PLA+ warping
On that note is there ever gonna be a rifle length gas tube Orca? For those of us who wanna try it with an 18-20" 223 Wylde barrel to try and make a super accurate Orca
I know the buffer system can probably never be done in a rifle configuration though given the length and print space and probably requiring the stock to be in 3 parts
Though that might also help on dwell time to keep a PLA+ Orca running longer
Even though I know you dislike a2 style stocks as you mentioned on one of the podcasts you've been on(not sure if it's the length or the way they look as to why you dislike them)
Just offering random ideas, that you probably have thought of, but *maybe* haven't
Either way awesome video as always!
Another way to make carbine length buffers work with rifle length systems is an adjustable gas block , Wojtek armory makes a great one that has the de-tent adjustment screw and clamp on (and is pretty cheap when you look at the rest of the market, roughly $45-50, do also recommend the gasport drilling and reaming kit to make sure enough flows).
That way the rest of the orca can be the same no need to modify the parts to get a longer barrel in there.
@@nobodytoyou4887 I thought that rifle length gas systems worked with carbine buffers
Colt Canada has made the c7a2 which is a rifle length gas system with collapsible carbine buffer stock
@@JaykPuten They do but it's not always optimal, hence why I mentioned the adjustable gas block , lets you tune it to how it should be or how you want it.
@@nobodytoyou4887 But at the point when you need to add the cost of a special tool to make a new gas port, kinda seems counter to the Orca idea(I could be wrong, but just from how it seems) is an AR you can make with things in your spare parts bin(if you make a lot of ARs) or that you can find online fairly cheap/commonly and AR barrels that already don't have a gas port drilled aren't common (granted I don't buy barrels too often for ARs so I can be totally wrong or just buying from more affordable places)
Unless Hoffman made a 3D printed jig so you could use a Dremel or a drill bit of the right size to easily build it without relying on specialized parts(other than ones made from the hardware store or printed)
However I could be wrong, as if it made the Orca more viable and longer lasting using from someone making it using an ender 3 and PLA+(which is like I *think* is the standard that most 3D printed firearms try to at the base adhere to, to keep it beginner friendly) then I could see some printable jigs to put on the gas tube to cut/drill at the right length as well as like a recommend drill bit size or rotary tool/Dremel size depending
But even then you've got to find barrel blanks that aren't pre drilled and are fairly priced and such, as all the cheap rifle shops online that don't have waiting times on production, all come pre drilled, in my experience, again could totally just be looking in the wrong places
Then again someone someday could do an Orca remix set with things like that, or an MOE style pistol grip module for carrying Skittles or whatever
However; unrelated to the Orca Im glad you mentioned a gas port drilling and reaming kit as I somehow was unaware they existed, and now wanna play around with a between mid and rifle length gas tube using an old 20" rifle barrel, and a longer than rifle length tube if I can find a decently priced 20" barrel that doesn't already have a gas port, to see how smooth I can get an AR to shoot, as my favorite is my a2 clone just because it's super soft and the barrel length lets even 55grain 223 go out to distance
So thanks for mentioning that, as I was not aware of quality gas port drilling and reaming kits like that, as any problems I've had I've used some go/no go gauges and drilled with my press to open them up(at work where I do QC and have access to everything a machine shop has), and it'd be nice to do at home, so one last time thanks for mentioning that, as I was completely unaware of their existence
@@JaykPuten Not sure about special tools, literally just use my old brushed power drill.
Also the gasports on my barrels were already drilled they just weren't large enough to pass enough gas to operate the actions reliably hence why i got that gasport drilling and reaming kit.
For a good cheap rifle length barrel take a look at cbc industries, picked up a 20" 223 wylde for less than $100, just checked still going for $94. (rumor has it they use the same blanks as faxon barrels)
If i was drilling the port fresh I'd absolutely be using a drill press and a jig but really there's no need if you go with any AR barrel that is ready to be assembled.
And your welcome glad to spread a bit more info if i can.
Hoffman, could you please recommend the best printer within a $1000 budget? Alternatively, if you can share the printer you personally use, I'll be happy to purchase the same model.
I had an idea for a unique annealing medium that I would love for you to test, diatomaceous earth. It is primarily silica and I wonder if the desiccant properties would give any benefit during or after the annealing process?
Would adding some of the gold automotive heat tape on the inside of the handguard help with the heat issue?
Not including plastic what did the orca cost to build?
Have you tried making a lower out of 100% carbon fiber nylon and no hose clamps?
Isn’t nylon 12 strong enough?
Nope. Layer adhesion is not improved moving to filled Nylons. In fact, PLA+ is about as good as your going to get.
Love videos on both channels... Love both channels. But it's like you're short, he's shorter. I can't get it out of my head. Maybe move the camera down? LOL
I'm short?
hey man with your ejection criteria it will vary a lot with the powder load of the round and the gas setting if you have an adjustable gas block. I've seen it with over gassed systems where you have the brass ejecting and getting throw to the 4-5 o'clock and under gas systems where the brass is stove piping or barley making it out of the gun and going to the 1 to 2 o'clock position when I'm gas checking my guns I go for 3 o'clock consistency with the brass landing in about a 1ft sized area.
Very based