humanpotatohybrid wrote:
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kevinpackard wrote:
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humanpotatohybrid wrote:
Not to be too critical but those still look grooved in your "after" picture. Any reason why you didn't turn them nearly smooth?

I polished the commutator again after clearing out the grooves. I don't have a lathe, so I'm just using fine sandpaper. That's not going to take down the ridges that have been worn into it by the brushes. If you're talking about the grooves with the mica, I'm pretty sure those grooves are supposed to be there. They were pretty obviously there before.

Yes, of course there are the grooves between the contacts. I meant the circumferential grooving/wear. What I do is just stick it in a drill chuck then use a sanding sponge, that tends to get it pretty darn good without the need for a lathe. Just a suggestion. 🙂