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Old 17th Oct 2018, 8:56 am   #4
barrymagrec
Octode
 
Join Date: Dec 2017
Location: Morden, Surrey, UK.
Posts: 1,558
Default Re: Don't try this at home...

I have a 1920s "The Practical Mans Book of Things to Make and Do" which gives the Sulphuric Acid file sharpening tip, it also recommends that if find your car has normal glass in the windows you change it for safety glass...
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