To make a pump?

Is their anyway to make your own pump? I see that some of you guys make your own devices I was wondering if any of you know how to make a pump?

You’re not doing your homework; or did the dog eat it?

There’s a terrific search engine here at Thunders. I found your first “homemade” pump thread for you in about 1 minute. There are lots more that you can look up.

Good luck. Hope you are mechanically inclined.