Jim I have two similar products both on the shelf and I use grinders with adjustable rests determining the angle as the sparks fly works for me. there are infinite do it yourself such things on most forums. A real close friend introduced to me another method where you can achieve two important results 1.A flat grind without the undercut edge.
2. Easy to see the grind.
This is acheived by holding the chisel across the face of the wheel. Some time back I put pics of how on the forum. My mates turning was exemplary using chisels sharpened this way.
A caution with really long handles and chisels the tool illustrated places the tool a long way from the stone bounce becomes a problem, dressing the stone critical.
Peter.
