You are on the original version of Frets.com.
CLICK HERE to view this same content on the new version of the site.

FRETS.COM
Shop Tip #226
© Frank Ford 2006; Photo by FF

Forstner bits are generally considered dedicated woodworking tools, but they will do a very neat job on aluminum, too.  Just be sure to clamp the part tightly, spray lots of WD-40 and keep the RPMs relatively low.