https://makerfaire.com/maker/entry/74059/
Maker Faire | School Maker Faire Coyote Grange Peanut Butter Jar Vacuum Forming
Sep 6, 2023 - We will be doing vacuum forming molds using peanut butter jars as the vacuum bed! You can take home a mold.
peanut butter jarmaker fairecoyote grangeschoolvacuum