...where would hand engraving be today if Don Glaser hadn't invented his pneumatic handpiece in the 1960s? Would we still be using hammer & chisel? Interesting to think about. :thinking:
I doubt it but don't leave John Rohner out of the equation.
There is nothing new under the sun as they say. The dental Plugger was invented in the 1800's It's the same thing as the home made engraving tools shown on the forum. Only it uses a small air compressor diaphragm pump instead of the foot powered one shown here.
I am sure Don used these patents for ideas and designs .
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