Convert a Bike Pump into a Manual Vacuum Pump
Vacuum pumps, while expensive, have a ton of uses, like vacuum sealing food or saving space with items in storage. Instead of buying one, though, you can convert an old bike tire pump into a vacuum pump for just $20.
Apart from a simple floor pump, you'll need some PVC hose, a check valve (that lets air in one way and not the other), and a hose clamp. Essentially, all you need to do is reverse the piston and check valve inside the pump to make it suck air instead of blow it. The final pump will be able to take over 75% of the air out of something, with over 11 pounds per square inch of force. It isn't ideal for everything, but it can be pretty useful around the house hit the link for the full instructions, as well as a few ideas on how to use it. Of course, we've already mentioned a few ideas in the past, too.
