This honing guide has been developed to cope with narrow bladed and short bladed Japanese style chisels. Capacity zero to 1"/26 mm. The blade is clamped onto and makes contact with the underside of the two stainless steel location rods, these being the primary locating datum.
How far the cutting edge projects determines the honing angle. For example clamp up at 5/8" / 16 mm and the blade will make an angle of 25 degrees to the sharpening surface. Measurement is taken from the side of the stainless rod to the cutting edge. A strip of wood with an accurate shoulder could be easily made to provide standard angles in your own workshop and marked 'rough hone' at the one end and 'finish hone' at the other.
|Angles dependent on the depth of clamping|
|12.7 mm||1/2"||= 30°|
|14 mm||9/16"||= 27-1/2°|
|16 mm||5/8"||= 25°|
|17-1/2 mm||11/16"||= 22-1/2°|
|20 mm||25/32"||= 20°|
|24 mm||15/16"||= 17-1/2°|
|30 mm||1-3/16"||= 15°|
|34 mm||1-5/16"||= 12-1/2°|
The hexagonal nut is meant for finger tightening only - not a spanner. The brass bobbin diameters are turned to plus or minus one thou inch and are selectively assembled to match pairs within one third thou max. difference, This coupled with the 'Ertalite'® rollers being turned in pairs means I have done my best to give you an accurate product. Two pairs polycarbonate washers are enclosed to cope with non-parallel chisels.
An accurately planed piece of wood fixed alongside the stone is useful for extending the working area over which the rollers can operate. Since the early 1980's I have been making a bevel gauge which is a useful extra to use with this guide, also doverteil markers and new 2002 adjustable bevel, all in solid brass.