pressure pot

If you have a cabinet, why do you want the pressure pot? The cabinet I have has a siphon feed out of the bottom of the cabinet.

More efficient, lower air pressure required to do the same job, and a more even etch. I typically use 40 lbs air, or less to do a nice even etch with a 3/32 ceramic tip, and it will bore a hole straight thru in less than a minute if I turn the pressure up to what I use in a gravity feed. It is a bit more gentle on the item being blasted because you can use 15 lbs on gift ware and still get the job done. Just use the cabinet to collect it for refill.

But the biggest you can justify, less time refilling is more time being productive, but be sure it is in a temperature controlled surrounding, don't want the steel tank condensation and getting the medium all wet. Doesn't work well that way, and no matter what size you get, when it gets wet it is too big.

I was wondering about leaving the medium in the unit. I'll go with the bigger unit.

Thanks