Rotary tool bit for cutting crosswise through 1/16" - 1/8" thick aluminum?

I have many rotary tool attachments for my Dremel 10.8 V lithium cordless (nice tool BTW), but none for crosswise cutting 1/16" -

The bit would probably be something between the Dremel 560/561 and the Dremel 9901. I have those, the drywall/multipurpose bits and the carbide cutter for cutting stainless steel.

The Dremel carbide cutter cuts aluminum too slowly and the multipurpose bit eats my skate frame aluminum quickly and is difficult to control. Currently I use the multipurpose bit, on high-speed and very carefully.

Is there a rotary tool attachment with teeth spacing somewhere between the carbide cutter and the multipurpose cutter, for cutting aluminum? Of course it doesn't have to be made by Dremel.

Thanks.