The Pointmaster Drill Sharpening Guide

摘要

This project started immediately after reading MEW 251 with the article by lacques Maurel detailing an alternative wishbone sharpening jig. I soon retrieved my back copy of MEW 97 as referenced by the editor. From my 'useful file' I recovered an article by John Wilding and his wishbone jig, that had been published in the Horological journal, dated March 1999. I have so often nearly made a wishbone so every time I see a design published it catches my attention but this time, I actually made the device, photo 1. Through the use of angle guides it can sharpen drills with Conventional Conical Relief and with 4 Facet Geometry.