Hello fellow members,

A couple friends and I are in the process of building a custom pneumatic gun and we need this piece machined. I would like it to be done in 6061 Aluminum. If it's too long for you to do, please let me know by exactly how much and I may be able to shorten the design. The only real challenge I see is the 11" deep 1/4" bore. As fas as tolerences go, .005 is fine for everything, although any closer on the OD wouldn't hurt.

It may be possible to get a piece of extrusion or tubing with a .250 bore diam,
or close and ream to size.
just a thought

Brad

That may work, but I think it would preform better with a single piece unit.

I might be able to do this. The file doesn't work either

Do you have any other dimesions? O.D.? I tried to pm you but it said you were filled

-garrett

Here is the new file.

Concerning the 8" deep bore down the center of the piece. The file calls for a diameter of 6.03mm, but anything from 6mm to 6.07mm would be acceptable. The material can be either be 6061 or 7075 Aluminum.

Dang Andrew,
You have some of the best software money can buy and you post this in only 2D, are we having trouble with anything that is not flat :D

:rolleyes:

The IGES/STEP files are on my other computer. I'll post them in the morning.

Here they are.

pneumatic with 6.03.... hmm sounds like airsoft.

*grins*

I've been buying my equipment to make airsoft guns.

Now if I could only get them all in one whole piece and location.

I'm converting a paintball gun to shoot airsoft pellets. It'll have a 1500 round hopper, with a c02 tank capable of 1000 shots, and can shoot *up to* 550fps. Needless to say, my friends are in trouble.

Shoot me a PM, might have a better option for you.

Should be alot cheaper, and the guy here really liked it.

Anyone?

Andrew, I think the problem is this is going to be kinda a trial and error sort of thing and it is likely that most are not all that willing to put 3 or 4 hours into turning and drilling this piece just to see if it can be done on a maybe I will get the job basis. Personally, I don''t think it would really be all that difficult. Actually, I started this just for fun and about an hour into it I discovered it was not all that much fun anymore so I quit :)

I managed to be creative with the design and now all I need is an 1/8" bore through a 8" long rod of Delrin. It's a stupidly simple job, if I had a lathe.

The part has now been done. Thanks everyone.