It takes me about 18-21 minutes in a 2" cylinder
but I do spikes up to 12-15hg every 12-15 seconds, then down to 3-5 for a couple. I'm sure no one will recommend you do it that way… but it works well for me, love the feeling of walking around with a monster.
Sorry I meant from when you first bought your cylinder. Have been pumping for a little over 2 weeks now and so far my base is the only thing that pack the cylinder. I was wondering how long it would take for my entire unit to pack the cylinder... 1 Month, 2months a Year etc...?
Packing at 5 hg is exactly how everyone reading this should strive to do it. This is steady gradual work and has produced real gains.I started five and a half years ago with a 1.5" cylinder. It took about 9 months before I could fully pack it. I am currently using a 2" cylinder which I can pack 1/2 way up after 20 minutes at 5 hg. If I reduce the vacuum to 4 hg and stay in the cylinder for an hour, I can fully pack it
Thanks for the responsesGood to hear, thought I may be doing something wrong! Still only doing 3 x 10minutes @ under 5HG, if I go over I notice a lot of discolouration. Will continue to pump for a year and hope to see results
Would I have to up the time I pump for eventually, if so when should I or is 30minutes enough?
I may be wrong (and someone please correct me if I am) but some discoloration is not necessarily a bad thing.

