Guidelines shown below are for use with the Tormek SVS-50 Multi Jig using the Closed Seat. The method for measuring the projection is shown on the right.
This tool is one where reshaping the cutting surface can be onerous, and the Tormek BGM-100 Bench Grinding Mounting Set can be quite useful. When grinding on a high speed grinder, all the settings remain the same. (For more information on Shaping vs. Sharpening, see also, Grindstones and Other Sharpening Media.)
Alan Batty stated that you can have an α up to 55º for hardwoods, and down to 25º for softwoods, but he usually worked with an α up to 40º.
Another rule often cited is that the length of the bevel should be 1.5 - 2 x the thickness of the skew (equates to 30º - 39º).
|Edge (Included) Angle (α)||Skew Angle (β)||Profile||Tormek
|α||α Range||β||β Range||α||JS||P||Hole|
|40º||25º - 55º||20º||20º - 35º||Straight Edge
||30º||20º||65 mm||B||For tight spots, detail work and finest finish. However, this is harder to control and is not recommended for starter-level turners.|
|45º||55 mm||B||For broad application. Easier to control than a 30° edge angle.|
|40º||25º - 55º||n/a||Radius Edge
||30º||30º||75 mm||B||For tight spots, detail work and finest finish. However, this is harder to control and is not recommended for starter-level turners.|
|45º||20º||65 mm||B||For broad application. Easier to control than a 30° edge angle.|
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