After a few days of testing I am wondering why I never bought one before.
If you use it at level 8 or 9, it can pump up to 13-15 inHg. I haven’t tried higher numbers. I found that if you start from 5 inHg and pump it up with a lvl 8 & 30 repetitions per minute, I feel that the force of the vacuum increasing fast causes much better “internal” expansion than static hold. I tried the same thing with the hand pump but I couldn’t pump fast enough to match the machines speed.