I have finished my project and it came out real well. It is a simple knock-off of other suffers and I have removed some of the complexities of theirs, added a foot pedal for control. Works great, uses 4" PVC.
If you read the PDF link below you will have all of the information you need.
I made this unit for personal use and had to buy a large block of the HPTE material which is horribly expensive in 2". I ended up with enough to make 12 pistons so I will be offering 10 of them them and a machined cap to forum members at a minimal cost. I'm not making any money or making anything for my time and the machine lathe work which is substantial.
Offered on a first come basis. I have used my unit and worked 21mm - 32mm - 36mm - 1 1/2" - 2 1/2" casings and it works perfectly. I also made two ext ruder plugs (shown in the picture) with (3) 3/8" holes but they are not available and took about 4 hours to make!.
I will furnish the piston, 2 O-rings and an end cap for the stuffing tube. The remainder of the stuff can be bought at Lowe's or Home Depot.
Attached is a PDF with the complete parts list of what you need.
First come basis only, no changes or deviation. It is what it is.
I guess I can't attach the pdf so go here to get it:
If you want a unit please email me at rbl671 at yahoo.com
Edited by rexlan - 9/2/12 at 1:25pm