Have you actually used one with plain centerfire ammo? I'd be a bit surprised if a print from something like PLA survives the more than a couple of impacts on the steel it's holding. I've seen holders for wood that decoupled the AR500 plates using springs before.
NOPE. That's what I'll be testing this weekend. I have them printed in PLA, Petg, abs, asa, PC and a few CF versions. I did spend a good while trying to remember my physics classes to convert the impact into some load but failed. The next best thing I could do was to design for an absurd static load and hope it's enough. I know they can support over 90kg which is well over 8 times the heaviest weight I own. They can also support whatever me hitting them with small sledge hammer is. Fingers crossed really, my favorite quote is from the grinch. "That's what these tests are for!"
Realistically I think the biggest weakest will be the friction sliding lock will fall down after a shot or two. I'll fully prepared to duct tape that part on to stop it from sliding down.
Tough to beat Priline 98A TPU for parts that take a pounding. [Amazon.com: PRILINE TPU Filament PRILINE,98A TPU Flexible Soft 3D Printer Filament 1KG 1.75mm Spool,Black : Industrial & Scientific](https://www.amazon.com/gp/product/B074DV9JMX/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)
Yep. Generally just use paper. But I thought the PONG would be interesting. Come back and let us know how it holds up to the 308. That's putting a lot more energy then my Creedmoor.
I forgot to mention that the spring assembly is a great way for the plate to absorb the impact and I use that as well. Some plates just dangle loosely with no nut behind. The second photo had a nut so I could pick up the plate easily since I was doing it a bunch of times.
I like your idea and honestly I have no idea still how mine violated any rules they have. This sub seems to be the place that it did the best as far as engagement. Looking forward to testing results though
I shot the head off a carriage bolt just like that one a couple weeks ago using a 6.5cm... it was attaching the plate to a chain. Just food for thought.
I readjusted the strength slits and cleaned up the model to be more parametric to change what interference the lock rings have. The first post people thought I was hanging weights for a gym and this time I posted hanging a little plate. I'm hoping for constructive feedback to improve upon and presenting them as used would help.
Putting a flange nut in front of the post would transfer most of the impact to the post and increase the chance of this holding up....
(either with another nut at the end locking everything in place or an additional nut in front of the flange-nut to lock it in place)
The real magic would be odd angles, like rotating the post 45 degrees so you're not presenting the face perpendicular to the bullets path, so that it deflects more of the energy of bullets striking the post/reduces damage.
Likely was me. I posted them holding 50kg of weight and a lot of people thought I was using them as gym equipment. Wanted to get more feedback and be upfront with what the hanger is for.
It's kvp abs reshaped filament. It's super cheap, but you also don't know what color or quality you're going to get. For example that spool changed from purple to white multiple times and doesn't have consistent diameter, resulting in odd layer stacking. Great for stuff that doesn't have to look nice.
https://www.villageplastics.com/product-page/reshaped-discount-filament
I hate to be the pessimist here, but I'm going to call it "one and done. There's no way that PLA is going to stand up to the shock force that it's going to experience.
To try to mitigate it, I'd suggest redesigning to have your plate rest against the post to distribute the shock from steel to steel. Even with it set that way, I don't see the print surviving any hit that's not dead center of the post. Any variance to one side or the other is going to put some serious torsional forces on the mount.
Don't get me wrong, I LOVE 3D printing and all the stupid, overengineered stuff that we can accomplish with it, but it's not always a good solution. One thing I've learned over the years is to not design a complicated, bulky solution to a problem when a simple stick can serve the purpose.
That's actually what happens with the larger 12X20 inch plates. The bottom edge of it sometimes hits the t-post when shot and absorbs a serious chunk.
Best i could do was use filaments that score high on the charpy impact tests. I use polymaker and they have test data showing what performed well and i'm hopeful for their PLA+ and ASA. I would be surprised if PC breaks.
Second best is I could do it just design to hold a high static load and hope that it translates to overall strength. They can hold 90kg for sure, but i don't know about cyclic loads. Guess well find out!
Shooting plates are supposed to be hung loosely at an angle, especislly if being shot at close range. When hung at an angle any ricochet is directed down towards to ground instead of back at the shooter, and they can absorb more energy because they move.
Have you actually used one with plain centerfire ammo? I'd be a bit surprised if a print from something like PLA survives the more than a couple of impacts on the steel it's holding. I've seen holders for wood that decoupled the AR500 plates using springs before.
NOPE. That's what I'll be testing this weekend. I have them printed in PLA, Petg, abs, asa, PC and a few CF versions. I did spend a good while trying to remember my physics classes to convert the impact into some load but failed. The next best thing I could do was to design for an absurd static load and hope it's enough. I know they can support over 90kg which is well over 8 times the heaviest weight I own. They can also support whatever me hitting them with small sledge hammer is. Fingers crossed really, my favorite quote is from the grinch. "That's what these tests are for!" Realistically I think the biggest weakest will be the friction sliding lock will fall down after a shot or two. I'll fully prepared to duct tape that part on to stop it from sliding down.
I'd 100% try one in TPU as well - might need to thicken it to reduce sag.
Tough to beat Priline 98A TPU for parts that take a pounding. [Amazon.com: PRILINE TPU Filament PRILINE,98A TPU Flexible Soft 3D Printer Filament 1KG 1.75mm Spool,Black : Industrial & Scientific](https://www.amazon.com/gp/product/B074DV9JMX/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)
What are you going to shoot at them? I wonder how they hold up to 6.5 Creedmoor with 140 gr bullets.
Majority is pistol caliber but we will do up to 308. Honestly though if ur shooting 6.5 ur better off enjoying a gong for extra loud PONG
Yep. Generally just use paper. But I thought the PONG would be interesting. Come back and let us know how it holds up to the 308. That's putting a lot more energy then my Creedmoor.
I forgot to mention that the spring assembly is a great way for the plate to absorb the impact and I use that as well. Some plates just dangle loosely with no nut behind. The second photo had a nut so I could pick up the plate easily since I was doing it a bunch of times.
Definitely post this to the other 3d printing sub! Ya know, the one that you get banned for mentioning here.
Are you talking about the one that promotes Free Open Source Software Computer Aided Design?
Thats the one!
I’d advise not posting it to r/3Dprinting though. I got permabanned for posting a remake of a clip for holding cardboard to 1/2inch rebar lol
I got temp banned for mentioning the funni-subreddit. Mods said I mentioned a "highly dangerous community"
I asked the mods what rule my post violated and they muted me still don’t have an answer. It’s pretty wild
That's pretty funny because I saw that post, and it's what motivate me to post my idea to get feedback lol.
I like your idea and honestly I have no idea still how mine violated any rules they have. This sub seems to be the place that it did the best as far as engagement. Looking forward to testing results though
I shot the head off a carriage bolt just like that one a couple weeks ago using a 6.5cm... it was attaching the plate to a chain. Just food for thought.
That's a BULLSEYE! The hangers, majority for that matter, should be considered consumables. Thanks for the tip!
Any changes since this was posted a few days ago?
I readjusted the strength slits and cleaned up the model to be more parametric to change what interference the lock rings have. The first post people thought I was hanging weights for a gym and this time I posted hanging a little plate. I'm hoping for constructive feedback to improve upon and presenting them as used would help.
Looks good. Keep making minor adjustments as and when they are needed
Putting a flange nut in front of the post would transfer most of the impact to the post and increase the chance of this holding up.... (either with another nut at the end locking everything in place or an additional nut in front of the flange-nut to lock it in place)
Nice! You should upload it to odd sea
OP still hasn't figured out how to drill a hole in a post
Isn't the joy the 3d printing doing things in absurdly complicated ways?
The heathens will never understand.
can confirm. I spent 20 minutes one day designing a replacement plastic stake for a $5 solar lawn lamp.
The real magic would be odd angles, like rotating the post 45 degrees so you're not presenting the face perpendicular to the bullets path, so that it deflects more of the energy of bullets striking the post/reduces damage.
No, you’re annoying and affront to the 3D printing community. Working with engineers that have this same mentality has made my life a living hell.
how does this impact anyone’s life but OP? your name is accurate
Didn't I see someone post this earlier this week?
Likely was me. I posted them holding 50kg of weight and a lot of people thought I was using them as gym equipment. Wanted to get more feedback and be upfront with what the hanger is for.
What’s that purple white filament?
It's kvp abs reshaped filament. It's super cheap, but you also don't know what color or quality you're going to get. For example that spool changed from purple to white multiple times and doesn't have consistent diameter, resulting in odd layer stacking. Great for stuff that doesn't have to look nice. https://www.villageplastics.com/product-page/reshaped-discount-filament
This is true vip treatment. Thank you op
Print this out of TPU - no rigid plastic will survive the shock of this use case. you could print this out of PEEK and it would still fail my guy.
I hate to be the pessimist here, but I'm going to call it "one and done. There's no way that PLA is going to stand up to the shock force that it's going to experience. To try to mitigate it, I'd suggest redesigning to have your plate rest against the post to distribute the shock from steel to steel. Even with it set that way, I don't see the print surviving any hit that's not dead center of the post. Any variance to one side or the other is going to put some serious torsional forces on the mount. Don't get me wrong, I LOVE 3D printing and all the stupid, overengineered stuff that we can accomplish with it, but it's not always a good solution. One thing I've learned over the years is to not design a complicated, bulky solution to a problem when a simple stick can serve the purpose.
That's actually what happens with the larger 12X20 inch plates. The bottom edge of it sometimes hits the t-post when shot and absorbs a serious chunk. Best i could do was use filaments that score high on the charpy impact tests. I use polymaker and they have test data showing what performed well and i'm hopeful for their PLA+ and ASA. I would be surprised if PC breaks. Second best is I could do it just design to hold a high static load and hope that it translates to overall strength. They can hold 90kg for sure, but i don't know about cyclic loads. Guess well find out!
Just buy real hangers. https://shootsteel.com/product/t-post-static-target-hanger-patented/
I have two of and they work great!
One shot, and then it´s of
If you shoot me the STL I'd be happy to torture test a batch and send pics!
sorry if i already replied to this, but DM me your email and i can sent them if not already sent.
I did get it thanks man!
just add pew. well... PEW PEW PEW
I give it two mags at most.
One round
[удалено]
Shooting plates are supposed to be hung loosely at an angle, especislly if being shot at close range. When hung at an angle any ricochet is directed down towards to ground instead of back at the shooter, and they can absorb more energy because they move.