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    Forstner Bit for Drilling Aluminum?

    I use WD 40 or beeswax, because I have them on hand. If you have a machine to hold it (drill press, mill) you can make holes with end mills or router bits. You could drill the material to 7/16 then use a reamer to enlarge the hole to 1/2 inch but a step bit would probably be faster. Clamp the...
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