The Pinol drive on my Unimat MK 4 had caries. It was already missing several tooth segments. There are a few suppliers online who still sell such parts, but the freight costs were too high.?
I ordered 1 pinion with 10 teeth from E-Bay. I needed a total of 2 sprockets for a Pinol drive. These are 10 mm long without hub and grub screw. The rest of the material was still available in the stock.
The shaft was turned in the collet chuck. The pinions were drilled out to ?5 mm and reamed. All parts were joined together with Loctite High Strength and the two gear wheels were aligned with the teeth. ?After the adhesive had hardened, the transitions between the two gears were smoothed with a very fine needle file.
Bruno