On 20 Nov 2003 08:52 AM, Steve Robertson posted the following:
Wow. I'm glad I just started reading this group. What a helpful bunch
here! I'll the the original poster would never have thought about
looking it up.

If the original poster is new to aircraft sheetmetal work he needs to
get a book even if he does find the answer to his question here. There
are just too many things that need to be looked up like bend radii and
figuring setback/bend allowance et cetera.

A drill speed chart is handy, but if you know what the allowable cutting
speed is for your bit material in the work material, you can easily
calculate the maximum RPM based on the diameter of the drill bit using
pi times the diameter. The short answer is that he isn't going to find
a drill that is too fast for drilling rivet holes in aluminum, and the
faster the drill he buys, the better it will work.

----------------------------------------------------
Del Rawlins-
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