This is a great way to make a vacuum pump out of a bicycle pump, for less than $20. A vacuum pump can be used for a lot of projects, not just torturing marshmallow peeps.
DIY: Manual vacuum pump
Related:
HOW TO – Build your own Vacuum pump
This is a great way to make a vacuum pump out of a bicycle pump, for less than $20. A vacuum pump can be used for a lot of projects, not just torturing marshmallow peeps.
DIY: Manual vacuum pump
Related:
HOW TO – Build your own Vacuum pump