I have couple diffrent verison of nibbers one is air and the other one is electrique verison.
Both do good job but just don't push them hard otherwise you will get jazzed edges which you will have to (BEEP)around with it later.
And make sure you have right nibbers due some are only work on thinner gauge and some will work just fine on thicker gauge so that the other item you have to look out for it.
Holesaw yeah .,,, I make myself a jig to hold the holesaw in place so it will not skew out of the place. { I made that from a peice of steel and milled out with CNC machine which I barter with one guy.
Die grinder it will work but just don't dwell at one spot too long otherwise you will have a major opps to deal with it.
Merci.
Marc
