The Farm & Fleet store near me carries the belt lacing, but not the crimping tool. I was going to try to get a lacing tool, but the prices were a *lot* higher than the $10 mentioned above, and there wasn't much available at the time on eBay.
When I was a teenager, I used to work at a hardware store, and lacing belts was one of the services the store offered. That was farm country, of course. It really isn't hard to lace belts yourself if you have the tool. Hopefully someday I'll stumble onto one at an auction. If I'm lucky, no one will know what it is.
Anyway, I decided to pull the spindle and use an automotive style serpentine belt on my lathe. I like it a lot, and would do it again.
GG