 Machining the 38 mm bar down to 32mm. The minimum size to get a 27mm A/F hexagon is about 31.2mm but allowed a bit extra.
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 Machined a a step of 25mm dia and 6mm long, this will be where the slots for the split pin or 'R' clip will be.
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 Centre drill ready to drill the tapping size for M18 x 1.5 which is 16.5mm
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 Tapping M18 x 1.5 pitch, using the tail stock centre to align the tap as I don't have a tapping attachment.
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 Taken out the lathe chuck and finished tapping by hand and also have machined down the surplus at the to hold in index chuck.
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 Surplus on bottom end is about 25 mm diameter.
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 Using a 2mm slitting saw to machine the slots in the nut, the finished size of the slot is about 3.5mm
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 Had to machine the slots in about 5 cuts as the milling head is not too rigid and the slitting saw a only a buget one.
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 Finished machining the slots to 3.8mm wide.
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 Machining the flats to 27mm using a solid carbide cutter at about 600 rpm.
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 Machining a chamfer on the flats.
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 Machining the surplus off the end and now just need a polish.
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