Snoopy1
640cc Uber Pimp
Ok if you want to end up with a perfectly round hole and dead nuts on 10mm diameter you do the following. Drill the hole with a standard drill just under 10mm I would say 9.75mm would be good. Then take 10mm diameter reamer and drill it Agan with the reamer you end with round hole 10mm in diameter. A drill with only 2 flutes is never round it is always egg shaped. Just hang on a bit I will go down to the workshop and take a picture of the 2.I don't understand "keep the drill" and what is a reamer? I though drilling a hole through a 1-1/2" thick prop hub was the job of a drill bit? I am all up for better so please explain....