Horizontal drill mounting suggestion

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Horizontal drill mounting suggestion

Postby gavin » Sun Sep 22, 2013 6:53 pm

The Veritas Tenon cutter is a glorious handy tool which Mike Abbott has greatly popularised. His Going with the Grain shows it in use in cordless electric drills.
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I prefer to be human-powered, so I have come up with this method of fitting drills in a metal crutch made of 38 mm wide mild steel bar, bent with two right-angles. (The same horizontal-mounted method works very well for drilling holes in pencil blanks.)

Whatever existing thread may be in your handle-hole I found bolts to match not available at the hardware store's bolt section. So I tap a new M10 thread in.

crank-handle removed. My finger points at the M10 bolt securing the drill to the chassis
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You'll do your own measurement of length of bar to fit your particular drill and height of the upstanding bent parts. I drill holes in the bar a little smaller than the diameter of the hand drill body and cross-cut the bar. You could notch it with a belt grinder or a hacksaw or angle grinder - up to you.

Find a geared drill - make sure the chuck has 3 jaws that move. Put a drill bit in and test it when buying second-hand.
Remove any existing handle.
Drill out the handle hole. To tap an M10 thread, drill it out with 8.5 mm drill.
Drill out the existing handle-hole with suitably sized drill. I find 8.5 mm works.
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Tap the hole - adding metal-cutting compound is a great help.
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You can relieve the hole
Relieved hole
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top view of relieved hole model
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or set the carrier plate up on some extra support.
Carrier plate set up on extra spacers
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Schematic image showing M10 bolt in newly-tapped hole
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Gavin Phillips

- teacher, demonstrator & supporter of greenwoodworking & human-powered turning
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