I needed to mill a couple of slots with beveled edges in a 1/8" piece of aluminum bar stock for a project. I've milled some thin brass before on my CNC but never aluminum. I didn't want to use my nice 0-flute bit so I tried a downcut 1/8" bit to mill the slot. Big mistake. It cut OK for a little bit, but then started making a mess of things and then broke. OK, gotta use the 0-flute. Wow, what a difference. Nice, clean cuts, with the correct dimensions. The 90 deg V-bit cut OK, not perfect, but plenty good enough for my needs. I bought the CNC primarily for woodworking purposes, but it's nice that it can cut other materials, too. The 0-flute bit is dynamite in UHMW plastic and acrylic. Very versatile.

John