Ah, very good to see you're still in the game! You can clearly see the "I grew up on PVC but I'm an adult with access to metals now" pedigree :D Got a bit fed up by the pull-rod trigger, and wanted to shoot it like a normal airgun. Some coil springs to pull the piston backwards and a trigger system ...

I'm currently designing a "big bore" (9mm) piston hybrid, with on-board air and fueling. I should be able to get quite some shots from a 200cc reservoir filled to 200 bar if I stick to a relatively small chamber volume. The goal is to have big-bore airgun power, but not the outrageous air consumpti...

https://i.imgur.com/KzravGs.mp4 One down, three more to go! Interesting that the marking on the wheel led me to believe that one graduation is 0.1mm, and one full turn is 4mm. It turns out that it's actually half of that. https://i.imgur.com/KnoSbIW.jpg Odd. Are the markings meant to indicate the ef...

Labtecpower wrote: ↑

Sun Nov 08, 2020 3:21 am

Most non-lathe-specific DRO's don't have the option to switch from radius to diameter though, and you'll get used to it soon enough

Sherline shows radius so I already am

In other news, carriage DRO done!



Now for the mill...

How's accuracy? Have you done all the alignment checks? If you don't have a machinist's level to level the ways, it's worth doing a quick eccentricity / alignment check using "Rollie's Dad's Method" I still don't have a dial indicator... but I did play with some test cuts and everything seems to be...

Here's my latest toy. Making a 1000x200 mm surface plate, needed some precision measurement Neat! Still some way away from that level (pun?), I'm here impressed by automatic feed... look at it go! https://i.imgur.com/fL4Z0XR.mp4 I think I've machined more steel in one evening than I did with my She...

As long as the o-rings seal, the darn thing will work. The benefit of making parts yourself is you can just tweak them until they fit without caring much what the final dimensions are. If making drawings for someone else to make your parts, then of course you need to watch the tolerances and make s...

Can you legally purchase this book in California? Or this one , or this ? If so, I doubt you could be prosecuted for simply drawing something. I mean you could also design a full auto assault rifle, but you wouldn't worry about being prosecuted for that. For reference and historical purposes only. V...

Quick Change Tool Post installed: https://i.imgur.com/sGfIXf0.jpg A very solid bit of kit for the price, much better than I expected. A little taller than I expected so I milled out a 5mm deep square on the compound slide to give a bit more distance before the holder bottoms out and to keep it rigid...

Not spudguns exactly but some amazing miniature pneumatics that are actually functiuonal:

hectmarr wrote: ↑

Mon Nov 30, 2020 8:17 pm

women etc.

Ah good, he's still alive!

Interesting observations. I always figured that in hybrids, since the mixture is pressurized the homogeneity is achieved without the need for further mixing. Have you tried filling from the reservoir and leaving it for a few minutes to see if it makes a difference?

Well there's a barrel for $25 from a .243 rifle that i'm looking at, I can get hold of 100 .243 projectiles pretty cheap and easy or I could even try steel 6mm BB's, no? IIRC, steel BB's are about 5.9-5.95mm (ones I have anyway) and a .243" barrel is about 6.1mm, so that doesn't seem too bad. I gue...

12 gram CO2 capsules fit pretty well in a 3/4" barrel...

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Still can't believe I was doing this stuff in my bedroom

Careful what you point it at, you don't want to call 911 to say someone has been injured by a flying caulk