what ones last the longest to cut copper?
http://www.dremel.com/html/products/...s/cutting.html
atm using #409, 0.6mm thick. I connect my 3mm holes with two cuts, so I use them because they're very thin. With one package of 36 pieces I can cut 3 blocks, but it's annoying those bits all the time
I've used #420, 1mm thick, before, but they're thicker. with those I can' connect my 3mm holes (with 2 0.6mm cuts, like with # 409) because they're too thick. they don't last long either.
I'll get some bits that are ~1mm thick this afternoon anyway, as I need them to connect the holes in my block with 2mm holes. I'll use one single cut of ~1mm to connect the holes, I don't want to do it the other way (two cuts of 0.6mm)
should I get #420's for this, or reinforced ones?
they're more expensive, do they actually last more then two times longer then regular 420's?
how about the #545_Diamond Wheel, anyone already tried these?