Quote:
Originally Posted by G.T.
...I have been eyeing the button for sale on ebay...
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Gerry -
(if you're still around) 
Does the 'button'
cut the grooves or does it
form them??? Broaching cuts the channel and 'stores' the chips in it's saw-tooth-like gaps between the teeth...I've never seen a button so I'm wondering if it actually cuts or just deforms the metal...
