If you’re really using a drill....... the pessimist in me thinks you’re only going to get so far with that.
How about a pic of what you’re using, and of the burs.
IMO........ most people trying their hand at porting for the first time are over zealous, and bite off too much.
They often discover after they’re about 1/2 way through the job that it’s not glamorous work.
Especially if you’re working with tools not really designed for the task at hand.
