Originally Posted by
tabetha
I think my best bit was freezing the poly bushes, so they can be drilled, need a VERY SHARP bit like COBALTS though.
You can also buy POLY in RODS to lathe up and make your own bushes!!
tabetha
it all depends on the hardness of the urethane... i've machined it on the lathe at room temperature, but it was 80 shore. used a normall drill bit too, but i had just sharpened it. its best done with some lubricant too, as it soon burns.
and don't think you're the first to discover the scorpio ARB either
although it measures more like 20mm than 21