On 5/18/17 10:03 AM, Bob Darlington wrote:
Ask them what they'd do it for without the tapping. Normally I'd do something like this for free but 40 tapped 4-40 holes in heavy wall aluminum is a pain. It would be a miracle if I didn't break the tap off at least once.
Very much so.. 40 tapped holes is a lot of holes Last time was for a resonant cavity amp (23cm band) and I had
to soak my cavity ring in nitric acid for a month to get the tap out. At least it's not steel.
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