Two Air Pumps

Two Air Pumps are smaller 3D printed versions of much larger air / water pumps I built using PVC pipes and fittings when I was much younger. The design is somewhat similar (although inverse in operation) to the 3D printed single cylinder air engine (http://ift.tt/2n4z7y4...
By: gzumwalt

Continue Reading »

from Instructables: exploring - featured http://ift.tt/2pqlWJU
via IFTTT