fusedbrain":13t1hpvs said:A little late I know, but I prefer this style of drill for thin metal like aluminium and steel chassis, and plexi-glass panels.
I drill a very small pilot hole with a regular drill bit ( to verify the location and prevent the step drill wandering ) and then I drill to size with these.
They tend not to grab in the thin material, and they don't dive into the hole as you break through like a regular drill bit can.
Just use a slower speed.