Today I completed a jig to hold a wood turning bowl gouge on the grinder to allow grinding a type of multi-sided grind called Fingernail Grind or Irish Grind or other names. This is for a fellow member of my local wood turning club.
This was made with mostly scraps.
The piece of angle is to be clamped/screwed to a bench at a set distance from the edge to allow consistent "stick-out" of the jig, which is important to enable getting the same grind each time.
This gives an idea of how it is used. A sliding arm with a stop/hole at the end. This is positioned so the nose of the gouge will have the desired angle, for this gouge 60 deg.
The arm is designed to allow being set to different angles. The arm angle changes the grind angle of the "wings" on the side.
A 1/4in x 20 tpi bolt threaded into the pivot block, head machined round.
A view from the rear. A brass tipped screw engages inside the flute of the gouge to hold this in place.
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A plastic knob with embedded nut 1/4in x 20 tpi. Drilled out the top so the head of the bolt fits. Drilled out the end for a small brass tip epoxied in place.
There are a number of commercially available jigs, but I do love making projects like this.
