ECN Forum Forums General Topics of the Trade General Discussion Area cordless drill attachment for knockout set?

I have a Greenlee bi-metal set that I've used a lot, and never chipped a tooth. My "secret"? Using cutting oil.

Sure, it smokes, smells, and is messy, but the teeth are still sharp as new.

"There used to be a tool called a Cobra that did just that--allowed a cordless drill to run a KO punch."
Look on pages 18/19 here: http://edev.colorassociates.com/greenlee/holemaking.pdf

For hole cutters, how about the Greenlee Ultra Cutters, on page 51 of http://edev.colorassociates.com/greenlee/holemaking.pdf ?

(Edited to add: I didn't realized until after I posted that I'm pointing to the same document as Larry Fine just referenced. I guess the WWW isn't really that big of a world out there!)

[This message has been edited by SolarPowered (edited 10-24-2005).]