Re: Collet Rack Angle
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The original holes are 1/4-20
Mine is a 1967 that came with the tool room sundries.
From: SouthBendLathe@groups.io <SouthBendLathe@groups.io> On Behalf Of Steve Wells
Sent: Saturday, March 20, 2021 2:31 PM
Subject: Re: [SouthBendLathe] Collet Rack Angle
With the tray facing forward on the tube, the screw holes are at 0 degrees, or at the back of the spud.
From the bottom edge of the spud rear, the first hole center is 0.250 and the second is 1.000, not much room
on the lower hole, I only have about 0.125 space from the hole to the edge, you might use .300 to be safe.
My socket head cap screws may not be original and they may have been little square head screws, but I used
1/4-20, 3/8 length. 3/16 drive size, they work well, and easier to adjust or remove.