[–] Shilly_Mc_Shillface 0 points 3 points (+3|-0) ago 

Pew Warning- woke me up !


PLA Plastic Filament: Stands for polylactic acid. Made from renewable resources (i. e. corn starch, tapioca roots, or sugarcane). Plaster: Is placed in the build envelope of a 3D printer as a dry powder, then the extruder head sprays a liquid binding material along the shape of the first layer of the object.

Tapioca gun- eat the evidence !!!

I need to get a 3d printer someday- have cnc, so never had real need. subtractive vs additive...ok, I need.

[–] NoisyCricket [S] 0 points 1 points (+1|-0) ago 

PLA actually smells slightly sweet when printing.

Unless you plan on getting much use out of it, because of the learning curve, I encourage you to use a print shop.

If you have a CNC you have a lot of the know how. But there is a lot of knowledge to pick up along the way. Unless you want to pick up one of the higher end commercial offers, which is 99% out of the box,you can pick up the rest as you go.

Worth pointing out that a 3d printer can be complimentary to your CNC efforts. Throwing away a couple of bucks of plastic is much cheaper than throwing away $40 bucks worth of quality stock. While not as precise as CNC, it still allows you to do test fits and prototypes a heck of a lot cheaper. It also segues into metal casting.

Something for everyone...

[–] whitedragons919 0 points 1 points (+1|-0) ago 

I would look into Markforged Onyx for something with tighter tolerances and a more robust material than PLA. The base Onyx Material is a cut carbon fiber/Nylon blend and it's really tough. Heat Deflection of 145C (290F). Furthermore, you could probably inlay continuous layers of Solid Carbon Fiber, Fiberglass, or even Kevlar with some of the more solid part. It'll be a bit more expensive than PLA printing, but the parts will be structurally stronger and handle the heat much more.

[–] NoisyCricket [S] 0 points 0 points (+0|-0) ago 

The guy claims he used a lot of different materials for tests. He came back to PLA because it's the only material he tested which withstood the repeated shock impulses. I actually expected he would be using PETG. It has better tensile, compressibility, and flexibility. Which I assumed would help it roll with the punches. He said it didn't hold up like PLA.

Of course you never know if this is an issue with how he is printing things. As printing PLA may be his strongest option with the settings he is using. It is usually the material everyone has nailed down first. Doesn't necessarily mean it's the best option.

But I agree with you. It would surely be interesting to see a deeper look at non-PLA prints.

[–] whitedragons919 0 points 1 points (+1|-0) ago 

There's a vast selection of mateials outside of PLA, PETG, ABS...etc., that I'm sure he hasn't tried. We print parts for Aircraft Components and have found Markforged Onyx Material to be some of the strongest, highest resolution materials that doesn't break the bank. Plus it's black!. It gets crazy strong when you have it inlayed with carbon fiber, High Strength High Temp Fiberglass, or Kevlar. The base material though, is already a Chopped Carbon Based Nylon, that's crazy strong.

[–] GoodGodKirk 0 points 1 points (+1|-0) ago 

that's interesting as hell, but I'll never build one. Mine would blow up on the third clip, after conducting all my tests...I just know it.

[–] NoisyCricket [S] 0 points 0 points (+0|-0) ago 

Keep in mind, with the exception of the bolt, which is not printed, the parts touching the boom are all purchased.

[–] FlailTail 0 points 0 points (+0|-0) ago 

Interesting development, they need not worry about silly weapons. They will employ a biological agents soon.

[–] 9768332 0 points 0 points (+0|-0) ago 

What the size its chambered?

[–] NoisyCricket [S] 0 points 0 points (+0|-0) ago