The Flite Metal Looks good, I'm going to look into this method for sure. thanks for the heads up.

Believe it or not the metal tube is 5/32 OD and an old as heck drill bit held in with nothing more
than fitting in tight, just got luck I guess. For the clean hole what I did was start with very
light pressure then let the bit do the cutting, what the pic doesn’t show is the exit, not as neat but it will
have a scrap piece of balsa to enclose the hole.