2-way radio ceiling fan pull-chain

thingiverse

I needed a pull for the ceiling fan in my lab. Being a big radio nerd, that's of course the first thing I thought of. So I made a tiny little HT. The entire center of the pull is hollow, to drop the chain all the way through. At the base, it's slightly larger to allow room for another coupler to be snapped on the chain. This serves to keep the pull attached to the chain. **Make sure you measure the diameter of your chain and couplers.** This is sized for chain that's just shy of 4mm, with a coupler that's approximately 4.5mm in diameter. I recommend measuring the coupler after it's been attached to the chain. I did not, and it was a very tight fit to get it into the bottom of the pull. I printed it with 100% infill and despite it's tiny size, it seems to be holding up quite well.