Forgot to add this First…Calibrate your oven a few times before use. Cant stress this enough!
WOW…it looks like that SOP is like practically how i operate my oven with some little differences. I pre-heat my oven to only 85F and leave it that way until the oven is full…or im done for the day.
I then raise my temps to 88-90 for an hour or 2. By this time…all my oil that was once 85F is now 100% around 90F. I then pull vacuum at full speed though. I pull all the way down till my needle is pinned below -29.9hg as i live 2 miles from the beach. I use small i think 1.9cfm AI pumps to keep from eating up too much terps
I keep the pump running for the next 1-3 hours depending on the way the slab is looking…Once the varying size bubbles become more uniform and much smaller. I close my vacuum port and leave it for the night. The next morning ill let air back in. Raise the temp by 1F and let it all melt down for like 30 mins. Pull from the oven and flip. I then put all them back in the oven. Raise the temp again by 1F and give it an hour. Pull Vacuum again for 1-3 hours. I will close my port and repeat the process until my slabs are about 95-98% bubble-less. Finally i will let all the air in raise the temps final 1-2F before i remove for the final time in attempts to pop the bubbles.
This usually takes between 3-5 days of purging and i try to stay under 103F by the time i finish…most times i can keep it around 100F.