As a starting point this video shows how to create a “safe” vacuum chamber.
To this I add inexpensive vacuum pumps chained together to create a very inexpensive electric vacuum chamber for resin and mold making. The print is mostly just to hold it all together nicely.
Total build is maybe $15USD
I powered it with a simple USB-C PD adapter
Easily reaches 26in/Mg
Parts:
The author marked this model as their own original creation.