I'd like to start a discussion on the design and fabrication of pneumatic presses built to derim 22 long rifle cases. The process requires a huge force to get that pesky rim off the case. So I spent a good lot of time and effort working on a design and came up with some interesting features that I'd like to share.
I'd appreciate if we could keep the thread on topic and focus the discussion on the building and function.
Here is the first press I built. Has a 4" cylinder bore with a 2" stroke.
Here is a video
http://s136.photobucket.com/user/fra...press.mp4.html
The second press used an RCBS partner press. 5" cylinder bore with a 2" stroke.
Also got a video on it.
http://s136.photobucket.com/user/fra...itled.mp4.html