Emulsion dispenser

Worked pretty well, however the rod tends to turn instead of driving the piston into the cylinder. This should be blocked in some way. Also i did not manage to get a watertight fit between the 50mm PVC and the piston. So i scrapped this plan, maybe the drive unit still is useable to somebody.

All large holes are for 22x7x8 bearings. All the threaded rods are M8 if i remember correctly.