With the SE77 Square Edge Jig, it is easy to set your wood chisels and plane irons for sharpening to a square corner. The design gives you the best conditions for a successful sharpening with the highest precision over the final result. You can also set the jig for a slightly convex shape.

Maximum width: 77mm Maximum thickness: 9mm

Two smaller knobs allows fine tuning if the tool is not exactly square to the stone, is very narrow or if the steel is slightly twisted. The setting for fine adjustment is done in seconds by loosening one of the smaller adjustment knobs and tightening the other.

The jig's construction also makes it possible to position and sharpen tapered chisels, e.g. Japanese chisels. The safety stops keep the jig securely on the Universal Support and prevent the tool from sliding off the grindstone, so there is no risk that you will hurt your fingers when sharpening

Sharpening a convex shape: Most types of plane irons can benefit from a slight convex shape. The degree of camber depends on the type of plane and should be approximately the same as the thickness of the shavings. Thanks to the adjustable side on the SE-77 jig, you can achieve the optimal convex shape for your tool.

Christmas and New Year holidays 2025 Jacks will be closed from 1pm Friday 19th December, with showrooms re-opening on Monday 19th January. There will be limited Spare parts and Service support available from our Auckland office from Monday January 12th. We wish you a merry Christmas, and a happy new year!

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