That tends to be expensive tooling. Lowest cost, mount a cutter in the lathe toolpost, lock the spindle and wind the saddle backwards and forwards, or make an attachment for your lathe like this, see:
Malcolm
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I don't suffer from insanity I enjoy it! Mene, mene, tekel, upharsin The writing is on the wall.
From: iamcruzinincognito To:
7x12minilathe@... Sent: Saturday, November 10, 2012 10:21 AM Subject: [7x12minilathe] Re: Keyway Broach
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here is a brilliant video by tubal cain regarding broaching keyways that might help explain the process to you...
