Pony/Horsehead Jig Painting - 2mm Heat Shrink!
I scanned through the forums looking for info on painting these jig heads while keeping the swivel clear. I found three methods: aluminum foil, heat shrink tubing and the "water" method. I have tried the first two, but my OCD won't let me even attempt the water method!
Aluminum foil worked fine, but my fat, clumsy fingers make it difficult to wrap around the swivel. It works though, and quite well.
The heat shrink tubing also works, and I have an assortment of sizes from a box I bought from Harbor Freight. The sizes are all metric and the 2mm fits over the crane swivels perfectly, not too snug, but tight enough to stay in place before you shrink it. 1/8" (3.175mm) would be a little too large. The 2.5mm stuff was very loose and I had to be very careful to keep it on place until the heat gun shrank it a bit.
The metric stuff may be a little harder to find, but hobby shops that deal with Radio Control stuff may have it. I found some on Amazon and several internet RC stores.