Like most of you..........you made your first tube. I did, it was a piece of inch and a half clear tubing that I made a conection to a small tube with an automotive Mitty Vac. It worked but not like a real tube. My first real one was a Dr.
At the end of a session after I have been stretching a couple of hours.....I spike it and hold vacume only 5 to 10 seconds. I hate when I hurt myself. I may do this over and over again for 10 min. I been pumping 10 years, still need to be carefu