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Old 14th Apr 2021, 12:45 pm   #13
emeritus
Dekatron
 
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
Posts: 5,349
Default Re: Vintage Diagram Drawing Techniques?

Re dried up Rotring pens, I remember one of the 1970's hobby mags having a DIY ultrasonic cleaner project. It was mentioned that the one they had built had fixed a dried up 0.1mm Rotring nib.
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