Putting some grip (stippling) on an aluminium drive pulley.

[NortonDommi]

Made many many V section ali and brass pulleys for smaller lighter model and toy steam driven accessories, some heavier ones need a little bit more grip because they slip, this stippling worked fantastically for me for what I wanted it to do, doesn't chew the belt up and alleviated any slippage.

Well I learn something new every day. I have de-glazed V-pulleys if they have become glassy after slippage, have occasionally had to spray 'belt-grip' with a worn belt and have seen V-belts damaged with what look like small gouges or dings in a pulley. Round section bands like Volta or Durabelt I've only ever seen used with V or Circular pulleys with smooth surfaces. Mind you I've also not worked with belts that small.
Got me to wondering if abrasive blasting with an aggressive grit would work.

 

[NC Rick]

I believe clean belts of round or "V" profile work best on a correct fitting and matching pulley profile. There is a lot going on in their function. Gilmer (sp?) Toothed belts are good for accuracy on position when driving positively.