I am working on a different style of book cases that have aluminum on them. I am thinking of either 1/16" or 1/8" but haven't decided yet. I will need to countersink the screws and was testing it out this weekend. I kept getting burs on topside of the aluminum and push through on the bottom side.
I did some reading of past threads here and elsewhere and cannot seem to find a good answer. I have tried both the countersinks with pilot drills and just the countersink. Neither seems to work much better than the other. The pilot bit countersinks I used are brand new ones from Irwin.
Any suggestions or recommendations?