For all resin workers, I have found this option really useful for degassing the resin (once mixed). I mix my resin, then degass in the vacuum chamber (this is the part where you have to pay attention!, a balancing act between too much vacuum where the resin literally boils up and out of your container and not enough. It doesn't take long to figure it out).It doesn't remove all bubbles but seriously reduces the bubble count if doing deep fills.(If you don't want bubbles at all, you need to compress to 4 Bar)