Ok here's another one......
One of my lathes is an old South Bend 9", my first lathe, and I used to do everything on it until I bought a 12" lathe a couple of years ago. Its a great lathe but I always had trouble turning larger diameter parts (4 and 5" diameter aluminum) because the leather flat belt would slip with all but the lightest cuts. It would take hours to remove the amount of material required to make the parts I wanted. I bought a "better" belt but although it was stronger than the old leather belt it still didn't have the grip, even with higher tension. Hmmm.....how to improve grip? I thought about converting all the pulleys to V but that would be a ton of work. So I put 3M rubber tape (got it at Home Depot) on all the flat pulleys, two wraps on each. WOW!! The machine was suddenly transformed into a workhorse! I could get the parts machined much quicker 'cause now I could take decent cuts. A side benefit was the machine ran quieter...no more click click of the belt joint. The tape lasts for a few months, maybe more or less depending on the workload, and sometimes it seems to attract chips that get imbedded in the rubber, but it only takes a few minutes to cut the old off and put two new wraps on. This one simple idea made a big change in my little shop.
Wayne