drilling larger holes in aluminum

[dradel]

Originally Posted by ChuckDickerson

We also use annular/Hougen/Blair cutters quite a bit. We have small hole (up to 3/4") and large hole (up to 1-1/2") sets. The only issue with them is the cutter is often very difficult to remove from the arbor after use. We use the little spacer/washer but often it is a a real struggle getting the cutter off. Maybe we are doing something wrong? Does anyone have any tips or tricks to making it easier?

Put cutting fluid on the threads prior to putting the cutter on the arbor.