Calling Doctor Insider....STAT! STAT!

Good to know. I would have expected it to fog the plastic immediately, even without any rubbing at all. Still not sure I'll be brave enough to try it myself, though.

 

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For the coin collector who has everything:

 

Lighter fluid or any (get ready for this) aliphatic hydrocarbon will not harm most kinds of plastic since it is not a solvent for them.

 

I didn't realize there was a great difference in solvent power between aromatic and aliphatic compounds. Now I know -- both acrylic and polycarbonate plastics stand up pretty well to aliphatics ("mineral spirits") but not aromatics (xylene, toluene, benzene that you can't buy any more anyhow) or chlorinated solvents (like methylene chloride/dichloromethane). They also don't like acetone one bit.

When I was looking through all the different Goof-Off MSDS pages, I saw that several of them include chlorinated or aromatic components and/or acetone. I'd still be nervous unless I knew exactly which one I was using.

 

First, we use Goo Gone on the coins and then acetone. Go Gone is probably like Goof Off.
Goo Gone also cleans tape and magic marker off slabs too.

You should add some distilled water, coin care, verdi-care, baking soda, and sudsy ammonia to your lab. There are other things I left out that the chemists here may wish to add.

 

I believe goo-gone is orange oil based and goof-off is hydrocarbon based similar to lighter fluid. I could be wrong though

 

Thanks, I'll need to get some to try. Never replaced the lighter fluid at work but I just may need to. It's funny how some common chems don't touch a residue and another will take it right off in seconds. Often it is a trial and error thing as long as the coin is not harmed. I use all kinds of different stuff.

 

WORDS TO THE WISE:

...and let me say this as I have posted it before. I have seen a silver coin "treated" with a baking soda paste right before my eyes; yet I could not detect ANY evidence of this treatment using a stereo microscope!
NOTE: Please DO NOT try this at home.

 

What would MacG...err... Insider do? ;-)

 

Like @GDJMAP say: The coin care plus MS 70 leaves behind major oily residue. You can't get MS 70 off your fingers. I use rubber gloves. Warn soapy water and clean distilled water.....I rinse rinse rinse the coins! I don't want "any" residue left behind that could be detected the TPG'ers. Like @Insider says: Trial and error. I use this stuff VERY sparingly.

You need..



..to get MS 70 off your fingers if you don't use gloves.

 

Read # 13
http://mentalfloss.com/article/66341/13-quick-fix-facts-about-macgyver

 

13. When Richard Dean Anderson Was Once Locked Out of His House …
… he found a way inside. Anderson had gone to a cast and crew holiday party during the first season, which he found unexciting. He and a friend moved over to a gathering for Cheers instead; when Anderson made it home, he couldn’t get in. Relating the story to a TV Guide reporter, Anderson thought the most efficient solution was to pick up a nearby bench and throw it through the front window. A friend later sent him a new bench: it had the Swiss Army symbol on it.

Okay, I don't get it......what's the translation?

 

Perhaps this is meant to be like what I once read about Conan The Barbarian (the books, not the movies). When Conan was faced with a difficult situation, his response was to pull his sword and cut his way out...no subtlety at all. The bench was a solution, like a swiss army knife?

 

I think he was pointing out that MacGyver isn't a real person and Richard Dean Anderson would take a blowtorch to a coin if he thought it prudent... Or cut it in half to see if its real gold then think it was 14k

 

Those work for me.

 

Now what kid has not tried the tape process. The ones I had were mostly jeff nickels.