Tool tang drill bit

Almost any steel will do. 7mm o/d, 2 straight flutes, 1/4″ increment depth marks
knoba - Tool tang drill bit

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Used in lathe, with new handles. Enlarge to fit individuals tangs…
knoba - Tool tang drill bit

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4° included taper (as per machine taper)
knoba - Tool tang drill bit

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Can easily remove shank for re-tempering. Link to CAD file below
knoba - Tool tang drill bit

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Wiki – Machine taper

knoba – Tool Tang Drill Bit – 2017.dxf

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