ive never used a dremel for cut a computer case...they can be hard to control once you get snagged on something....plus the cuts arent as precise...and you also have to deburr the edges. ive always used a nibbler to cut my case, theyre relatively cheap ($10 to $15) and make a much neater, cleaner cut than a dremel could ever hope for. they do cut slowly, but theyre alot easier to cut complicated curves and angles with. i bought mine from best buy for $11
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