Sliding on concrete?

I cant help you...but Im still chuckling 15 yrs after my kid came to me and asked me to machine him replacement grinders for his skates.

I machined em out of Teflon. As I recall..he sprained his shoulder, wrist, busted a couple fingers and whatnot before coming back to me and asking for them to be machined out of something else.

So I made some from soft urathane.....chuckle....lol

My own skates have delrin grinders. Dont use em much anymore though..at 54, I take too long to heal. So its easy skating now days.

Gunner

"Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules.

Think of it as having your older brother knock the s*it out of you for torturing the cat." Gunner

I am not really sure of the definition of grinding that you are referring to, but from the description you supply, it appears that what you are looking for are wear plates.

I would suggest HDPE or the even harder version of the Ultra high density polyethylene. This is what they use in gravel chutes to resist wear. It is slippery and will not impart wear on the curbs.

HSS with well radiused edges!

Mark Rand RTFM

Maybe if it were used as a plate on something less rigid. I'm looking at Ultra-High Molecular Weight Polyethylene (UHMW). Might be the same stuff used for truck bed liners. Hopefully the local hardware Borg carries UHMW or something comparable. Tubing cut in half lengthwise might work.

McMaster-Carr carries it - all different shapes and sizes. Ken.

I'm going to try UHMW tubing, cut in half lengthwise and shaped a little more.

Thanks for the replies, educational as usual.