[modeleng] Trepanning(?) copper
- From: "Dennis Rayner" <dennis.rayner@xxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Tue, 31 Aug 2004 20:00:00 +0100
Hi all,
I'm cutting 5+" and 7+" circles out of the front and back smokebox
plates for my Elidir. I'm using my Dore Westbury with a boring head at
lowest geared speed believed to be about 34 rpm.
A simple question - what top rake should the cutting edge (a miniature
"parting" tool) be? Currently I'm using zero (as per brass) and it don't
seem happy!
Thanks as ever
Dennis
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