Anybody know what type of metal aggressive skaters use for sliding on concrete? What are the properties that make it good for "grinding".
I'm not planning to intentionally grind the concrete, but I'd like some material that is durable and will slip on concrete. Conceivably it can be disposable/replaceable if the replacement is not costly or time-consuming. It is to be used as a short (about 1 inch) stopgap between two skate wheels, so rocks and stuff (like a sharp angle curb) cannot get in between and cause the second wheel to bind.
I'm considering using aluminum and coating it with super glue or covering it with some material (to be recoated/recovered regularly).
Thanks.