Silicone Vacuum Chamber 
BubbleUP
$69.99Effortlessly remove air pockets from your plaster models with BubbleUP. Save time removing bubbles by hand and backfilling airgaps. Clip the BubbleUP to a standard plaster pipe, activate, and dip into wet plaster to eliminate large air pockets and minimize small bubbles. Runs on 2 AA batteries for 6 hours or about 200 jobs. Save time and achieve smoother results!