marion moore
Sr. Member
I'll try to keep this short, back in 1975 I worked in engineering, we use pencils to do dwgs before computers
with autocad. if went drew a part and needed another part almost like it we would run a copy of it using sepia
paper, we then could change the part to make it a new part, with out redrawing the whole part. we had to use
a two part liquid that came in two different glass bottles with eye droppers. we would use a q-tip with part #1
which would remove the lines you didn't need. then use part #2 to neutralize it. one day I had a buffalo nickel
with no date, so for what ever reason I put some of part #1 on it and the date appeared, just real faint, but
could read it. then I wiped it off and it was gone. I can not remember the name of the liquid, it been to long ago, but
if you have any use for it I'm sure you find what it was on the internet. I did use it on other coins and it worked most
of the time. best I remember it would clean a penny real good. thanks for reading, marion
with autocad. if went drew a part and needed another part almost like it we would run a copy of it using sepia
paper, we then could change the part to make it a new part, with out redrawing the whole part. we had to use
a two part liquid that came in two different glass bottles with eye droppers. we would use a q-tip with part #1
which would remove the lines you didn't need. then use part #2 to neutralize it. one day I had a buffalo nickel
with no date, so for what ever reason I put some of part #1 on it and the date appeared, just real faint, but
could read it. then I wiped it off and it was gone. I can not remember the name of the liquid, it been to long ago, but
if you have any use for it I'm sure you find what it was on the internet. I did use it on other coins and it worked most
of the time. best I remember it would clean a penny real good. thanks for reading, marion
