I found a pretty strong little bit.

I found a pretty strong little bit. Purchased a 1/8" 2 flute Kodiak premium micrograin carbide bit off amazon for about $13. Though my gantry wasn’t quite rigid enough to maintain a clean cut through the aluminum, and my collet adapter broke in half, that little bugger of a bit remained in tact. It’s hard to believe whereas many of my other bits snapped like a toothpick. This one gouged a deep crevis in the metal before the collet snapped in half.