I'm in. But my cannon has a 50mm porting so I would fire something a little bigger...

Added me.

I live in London but clicked on Manchester....

Me and qwerty are the only ones.

Don't listen to them. Peak pressures on a spray and pray are ~60psi.

That is far too low to cause any burst.

This is where members who need help getting machining done to their spudgun parts. There will be some guide lines and they are as follows: Machinist guide lines 1.Own your own equipment. 2. Agree to work for a fair price. 3. To keep shipping down be country oriented. 4. Work quality agreement. 5. R...

Jrrdw, I was planning on sending the 3/4" nipple to him as well. Also do you think you could start a machinist wanted thread? Threads like these could eb condensed and the machinists among us could just check there every once in a while I'll talk about it with the other mods/PCGUY and see what they...

I doubt I'll ever go over ~ 10x, but all the parts on my gun can handle 20x so I'd likethe piston to handle that as well. I don't know if you've seen my valve, but there will always be an air cushion and a thick rubber washer to cushion the piston force Would you want a hole/threads in the piston? ...

I advise against aluminium. I think there was an aluminium piston in the past, but it didn't survive long. Steel is really the best option, I'd just get around the density by using a design like SB15 and MrCrowley used. Or you can try modelling your build in GGDT to try out different piston masses....

I doubt I'll ever go over ~ 10x, but all the parts on my gun can handle 20x so I'd likethe piston to handle that as well. I don't know if you've seen my valve, but there will always be an air cushion and a thick rubber washer to cushion the piston force Would you want a hole/threads in the piston? ...

Of course, I also have a digital metric caliper, and I would also send you the orings that I have Would you want them floating? I have a big box of O-Rings but could not necessarily guarantee that I have one that fits. You're right, it would probably be better if you sent them. I also have a choice...

Of course, I also have a digital metric caliper, and I would also send you the orings that I have Would you want them floating? I have a big box of O-Rings but could not necessarily guarantee that I have one that fits. You're right, it would probably be better if you sent them. I also have a choice...

Also will, I would like to pay in cash and I only have American dollars. It would be about 3/4" x 2-1/2" Thats fine. If I do this, I must insist having the pipe/fitting that it would slide in. We do metric here, so I would be unable to get it myself. And Cash? Why would I want to be paid for someth...

I have a lathe, but live in the UK. :/


I could do it but it would depend how big it is.

How cheap is cheap? One of our sponsors does a pretty good deal , probably plus postage it will be cheaper than buying locally in rip-off Britain ;) I got one off amazon for £20. Buy a QEV if you live in the UK. Here: http://www.technobotsonline.com/pneumatics/valves/quick-exhaust-valves.html You w...

You could always buy one off joel at spudtech.com/store .

They are very high quality.

I dare not ask how many litres of epoxy you have used! :shock: Since I started messing with epoxy just over 10 years ago, about 15 litres. How many projects have you tried? Lots! I have seen some of them and they seem very impressive. One question I have is how can you set such complicated structur...