You have to grind a loop knife tool for the lathetried all ways of cutting rubber with no luck i found the only way is to grind it. so i got lengths of round rubber which you would make "o" rings with. i made a groove in a large plastic disc in the lathe made an o ring and fitted it into the groove and using a die grinder with a three mm cut off wheel i ground a slot into one side, i them machined a ridge on the plastic and turned the o ring inside out and fitted it onto the ridge and cut a two mm slot in the other side. hope that makes sense i'll put a few pics on to explain better
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That’s just one awesome projecta little update
Take my money!!!a little update