Like a boss! I love how the orca looks like damn it’s looks better than an original ar15. Super nice design there Hoffman and I can’t wait to build one :)
My guess as to what'll happen is the upper will keep trying to unhinge from the lower, and the lower part of the stock by where you shoulder it will sort of wear and warp, (edit just heard there's no buffer tube in there, so that's probably a weaker point to wear) possibly the pistol grip will bend Maybe some breaking of the printed area around the barrel and gas tube If it's PLA, which I believe that one Either that or nothing will happen I'd have a better guess, but I haven't had the time and inclination to print and build an Orca *yet* so I'm probably way off But I love this channel and want to engage with it to hopefully have RU-vid show this channel and videos to more people
Could be interesting to see a similar test with a recently used Orca while it's still warm. Might deform more than cracking? Of course the heat would be localized, so that would also be a consideration. Could also look at extreme cold testing. All in due time, I suppose.
i've seen all the tests, and actually the el cheapo carbon filament does the worst in the tests as far as tensile strength, and that's what you need with the clips. really impresses me that you couldn't break it!!! Amazing...
Something I recommend is rapid accelerated trauma, something like an impact, something I’ve never seen a youtuber do is try to use their rifles like some kind of axe and hit it against a solid object
Prediction: If the barrel is jammed into the dirt while you are doing pushups, the buffer tube will become the fulcrum. Permanent deformation to a sudden snap. If the buffer tube stock is jammed into the dirt, the handguard will become the fulcrum (especially around where the hose clamp is). Deformation until the handguard touches against the barrel.
I'm not proficient in 3d modeling or firearms design, but how much effort would it take to turn the Orca into a "featureless" rifle, given the modifications you've already made to the AR platform design? Is it possible to merge the pistol grip into the existing stock design?
Amazing. I am thinking of Edison's experiments with lightbulb filaments. One day you'll have the right blend to eliminate POI shift. Then, game over. Cannot regulate what we can make at home.
Tim you opened yourself up to some embarrassing edit potential here lol. Amazing work you’re doing bud. Weapons have always gone through phases where the average human can make them. We’re almost there with firearms
Have you thought about a rubberized coating and apoxy enamel over the tower and stock well to help give it more reinforced elasticity to deter cracking.
It would take a fairly thick coating of epoxy or rubber to strengthen the lower. The PLA is cracking throughout the lower so a thin coating on the outside isn't really going to help with that.
@@HoffmanTactical Plastic deformation of layers could result in the cracking you are seeing. Its been a while since I did engineering trenchwork on composites, but I vaguely recall some creep failure modes being crack propagation, but I could be wrong. Of course it would be dependent on exactly how the load is being applied relative to the build orientation/layer bond orientation. Unlikely if it is a compressive stress. Interesting phenomenon you have come across none the less!
could you make the receiver longer? as in chop the front end of the stock off and put it on the buffer tower end of the receiver. thicken it up a bit and move the boundary of the parts away from the stress concentration?
Let God bless you for all good and develop in this project, you are a good and good wave of the American people and pray to God to keep you away from every evil.
Just had a crazy idea, What if you 3-D printed under pressure so that all the individual filler spaces are pressurized… think that might help strength? Regididy? Maybe not with this build but ingeneral?
I understand tests for strength, but in reality if im banging my firearm up that bad or falling quite frequently, then maybe i shouldn't be carrying a rifle..
Just print or buy a thumbhole stock from Hera or from Vism. The connection from the grip to the buttstock adds a massive amount of strength. You guys should be smart enough to figure that out. Good grief.
@@docternoblex dude wtf are talking about. That is the best way to reinforce 3d printed or polymer lower. Unless you like your shit breaking in your face. Hera is also German made and if you know any american thumbhole stock makers im all ears.
@@AllFallBeforeMe german made is bullshit, it’s german *designed*, made in china, even if it did mean anything, it’s still crap. If you want a quality thumbhole stock, you print a lower with metal inserts to prevent cracking
hey brotha, new sub for ya here, i am a u.s. marine vet here 93' to 97' active ! , only have email here , would love to talk more + i am tracking down some tacticaL stuff for trade/swap , thanks n talk soon > tom !
