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To use the Bowl Gouge Jig (BGJ) you need to have some sort of either commercial (Wolverine, e.g.) or shopbuilt jig that will allow you to position a V shaped stop towards and away from your grinder. Mine is just 1/2" BB ply, glued up to make a T-Track, and simple fence and sliding V stop.
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First thing you need to do is to color the entire bevel area with a black magic marker. This will help tremendously with set up and checking the grinding angle.
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Insert your Bowl Gouge into the BGJ, and make sure it's aligned as shown in the picture on the left, and NOT like the picture on the right. Just eyeball it as close as you can... it's not terribly critical.
Also, do not over tighten the hold down knob... there's no need to and it strains the BGJ unnecessarily... Just snug is fine.
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  RIGHT! WRONG!!
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Set the ball end of the BGJ into your V jig, and adjust the distance towards or away from the grinding wheel until the bevel matches the angle of the wheel. Then rotate the wheel by hand and check the scratches made in the magic marker... this will enable you to fine tune the distance from the wheel until you get an even pattern of scratches across the entire bevel area.
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 Need to move the V jig back a little!
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Once you have adjusted your V jig so that you've matched the factory ground angle of your bowl gouge, you're ready to grind!
A couple of notes... Have a water bowl next to the grinder so you can quench the gouge after each pass...
And, you can change the profile of the grind on the gouge by angling the head of the jig... angling it farther back, i.e. away and up from the wheel, will give you lower, longer "wings" on the gouge.
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 Ready to Grind!
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Rotate the jig left....
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... then right... then quesnch in water.
Repeat until you have an even grind across the entire gouge.
It will take you awhile to get the initial fingernail profile, but then it's quick and easy to refresh the edge. I just use one pass to resharpen the bowl gouge. Changing the angle of the grind is easy too... Less angle = less aggressive, and angling the head of the BGJ back makes a longer, lower fingernail profile.
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Once you get it set up, it just takes a couple of seconds to refresh the edge of your bowl gouge... which makes turning even more fun!
Sharp, sharp, sharp!
Any questions, just email me!
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