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The holes were punched quite easily and reasonably quickly
using a simple Greenlee knockout punch. There are generally used
to punch holes in electrical boxes and the like, but racers
and other use them extensively in sheetmetal work.





All text, photos and graphics Copyright 1998- 2015, Doc's Machine & Airsmith Services. All Rights Reserved.
BH-209i and sundry IP Copyright the Tayler Corporation
Information contained in these pages is for reference and entertainment purposes only.  Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should be all right.