Quote:
Originally Posted by phentron
I made my first glass working tool in the early 1970's - it was a flat file with its thin edge ground down to clean metal. The corner edge is used as a scoring knife. The file would only need re-grinding once a year when only used on soft glass rod or tube, but if scoring boro you only get a dozen or so score marks before it needs to be re-ground.
I later made a scoring knife from a smaller triangular file (grinding away one surface of the triangle). This was small enough to carry in my tool case, as I was servicing scientific instruments & often needed to cut glass tubing.
Peter
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Peter, are you just using a regular home workshop grinder to do these modifications? Are you polishing the surface after grinding?