Thrift Vacuum Oven

A used Commercial Vacuum Oven with a small drying area will cost you at least 400 dollars. You can build a cheaper one.

Quantity		Component name
1	×	Large Pressure Cooker 10-20 dollars thrift store
1	×	Silica Desiccant "Crystal Kitty Cat Litter"
1	×	Roofing Tape
1	×	Plastic Sheet
1	×	Vacuum Oil
1	×	Vacuum Pump