Quote:
Originally Posted by Revved
I bought a set of the Mittler Brothers punch and flare dies a couple weeks ago... they come with a 1/2" fine thread bolt and bearing to hold them together. Drill the 1/2" centering hole... assemble the punch and die and I've run them through 18g with my dewalt electric impact with ease. Very. Very. Nice.
Just punched a 1 3/4 hole in a firewall yesterday buy just running through the punch but not enough for the flare.. a tap or two with hammer and dolly and it was a perfect hole on a flat firewall.
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I like you're kind of thinking Sean!
I'd have just used my Hougen RotaCut and there'd be no need for the dolly and hammer. LOL
Holes in sheet metal are one of those things that takes lots of different "ways" to do them. Twist drills are a no no... and "hole saws" do more damage than they're worth.