[louie r/c nut]

Hey Jim you might want to set up a jig and use your drill press .

Take a scrap piece of ply wood cut a 5/8 hole stick the rowel in the hole then line it up to the drill press clamp the ply down so it does not move then drill .

Drill very slow so you don't crack the rowel should have no problem .

I have done this for parts on my boats and it has worked well .