^^^^What GW said. Nibblers are useful in only very limited circumstances. Buy cutoff discs for a 4" electric grinder, and use that. You will be able to cut the panel with no distortion and you will be able to cut in much closer than you can with a nibbler.
You mentioned that cost is a concern. You can get a Harbor Freight 4" grinder for ~12-15 bucks and a pack of cutoff discs for ~8.
Oh...And also, be careful...use a full face shield if at all possible, long pants, heavy shirt, Yadda Yadda Yadda.
Last edited by rwhite692; 08-27-2012 at 03:54 PM.
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