At 04:13 PM 10/29/2012, PICdude wrote: >Whereas I don't want to do the cutting, I'm curious what these blades >are called, as it may be nice to have one around the shop for other >things. Right now, I've got to cut aluminum framing (patio-screen >framing) for a trade-show display and about to research which blade >(same I bet) to use for that. You *can* use a standard carbide-tipped wood-cutting blade if you are=20 extremely careful. The more teeth, the better and the blade has to be SHAR= P. Clamp the material as best as you can and feed the saw blade slowly=20 into the cut. This works very well on a radial-arm saw and will work just fine on a=20 standard miter-saw. You can also use a hand-held circular saw but=20 its hard to stop the blade from grabbing. Its not particularly=20 dangerous so long as you don't let the saw get out of control. I don't think that I would try this on a table saw, though, without=20 using the proper blade. All that said: a carbide-tipped blade designed for cutting=20 non-ferrous metal just works "Better". Our local Princess Auto store recently had a sale on 7 1/4"=20 ferrous-cutting blades which I used to cut up a bunch of=20 steel-skinned Structural Insulated Panels with. The blade looks=20 almost identical with the similar non-ferrous cutting blades that I=20 have but the carbide teeth look to be much sturdier. The rake angle=20 is very similar, though. dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .