Grundig CN series PLAY gear

thingiverse

Another well-known problem amongst Grundig fans is that the rubber-like material decomposes over time and loses its teeth, eventually disintegrating completely. To solve this issue, many "traditional" replacements are available, including milled, silicon molded, and injection molded versions, all priced similarly. However, I was experimenting with a 0.2 nozzle, which was necessary for another Grundig replacement component, and I wanted to find out what the smallest modulus gear I could print was. I started by printing an M0.4 gear for my printer, which turned out perfectly, but then I realized I needed this gear replaced, so I decided to try it out. I quickly modeled it, made some adjustments in the slicer, and voila! It's already installed in the mechanics, and I've listened to several days' worth of cassettes without any issues - a little gear noise can be heard, but if you need complete silence, perhaps don't listen to music. In my case, the small gear on the capstan was still intact, so I used photos from Google to model it. However, extracting this part is challenging due to its deep burial within the mech. Therefore, the 5mm hexagonal shape is an estimation - if someone could confirm or provide the exact dimension, that would be greatly appreciated. There are two versions available: one for a 3mm capstan diameter and another for a 2.2mm capstan diameter.