What do you do when the correct size mainspring winder you have has an arbor that looks like this? This is exactly the situation I encountered last night. I was servicing a Slava 2428, twin barrel movement. The barrel is so small that the only winder that could fit was a Watchcraft #2. But my arbor looks like it got chewed by a dog. I remembered a post a couple of months ago about a homemade mainspring winder using a plastic sheet and a pinvise to hold the actual watch barrel arbor. Th