[Amps] RE :  amp hardware

Peter Chadwick g3rzp at g3rzp.wanadoo.co.uk
Thu Apr 12 03:37:03 EDT 2007


It should be noted that most of the standard tables for tapping drill sizes are actually rather on the small side, being such as to provide 80% or even more engagement. This leads to a high strain on taps, and it's generally adequate to use a slightly larger drill, such that there is about 60 to 70% engagement.
73
Peter G3RZP


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