Update on the current project and a little sneak peek: still lots to do (polishing valve seat, rebuilding piston to track more cocentric, some funny stuff with the barrel, a way to aim more better), but I managed to put a hole in my box spring with some supposedly "low power" testing and a plastic 1...

You could look at making a blow-forward bolt which uses the air from the main valve to operate. You can probably see how it works in this animation from clide or this project.

I've been having quite good success with printing 95 TPU seals for old co2 guns. Maybe just lucky....which I'll gladly take. ;) All I've printed so far is brackets for random projects and project boxes and I've had a 3d printer for a year. :p I do have some harder TPU (I think it's 95D) I used for ...

ITWOST: Got some new camera gear and figured I'd take a closer look at one of the "good" piston valves I've made recently. https://youtu.be/SVZjXHcsJnk There's a lot more work on the completed project because I want to do silly sh*t, but another small anecdote: you ever head of FOGBANK ? It's some s...

A very interesting way of doing it for those who are more at ease with 3D printing although I suspect it would be a challenge for rifle length barrels. I don't think there's much stopping us traditional, ancient hardware store trolls from making the same type of ECM jigs just traditionally manufact...

Nice job as always, it's funny that I see these projects of yours before I even look at spudfiles because of the yt channel. Beautiful old gun too (well maybe not the stock but who's picky with 60's airguns :p).

Pretty good for a nailgun! :p I have a few recommendations for the next one, though. That chamber is pretty massive for a 1/2" barrel. If you were to use a smaller pipe size for the chamber (say 40-50mm) you could probably find some better pipe which is either rated for pressure or will hold up bett...

Nice cannon! Any plans for using that threaded adapter on the end of the barrel?

Very nice project! Since we're talking about rifling, have you seen how people are using "electrochemical machining" to rifle barrels from steel tubing?

Nice catch!
and nice launcher, neat to see people still building in 2024.

I have an air cannon with interchangeable barrels. so far, I have a 1 1/2" barrel and 1" barrel. I am trying to get paracord in a tree for my ham radio antennas. I have seen the suggestion of an arborist's weight bag. Does anyone know any good alternatives? Tennis balls were the go to at least over...

jackssmirkingrevenge wrote: ↑

Thu Nov 16, 2023 1:10 pm

That's a hell of a BB gun.

Reliability stacks, the more parts, the more often the machine stops. Theoretically, a spool valve like you built with one moving part should be very reliable. However, you probably need to look into how the seals on DCV's are done, O rings rarely like to move past porting, having the o-rings seal i...

He's still at it! Nice work as always.

jackssmirkingrevenge wrote: ↑

Thu Nov 09, 2023 12:26 pm

Here is what it looks like internally, if it seems a little unusual that's because it's actually part of another project that I will share at a later date:

Cryptic as always. Does it have to do with cartridges?

Interesting find, we definitely need some more test data on hybrids to improve the modelling others have done.