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Penbbs Smell


sapient

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Sherbs, what do you mean by stoichiometry? I don't see how stoiciometric ratios could be at play. Or were you just being facetious?

I just like the word. And I like your chemistry lessons. ;) I actually tried to think of a more relevant witticism, but the well (beaker) was dry.

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I have maybe 7 PenBBS 494s, bought from different sellers in different times, none of them had any smell at all.

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I just like the word. And I like your chemistry lessons. ;) I actually tried to think of a more relevant witticism, but the well (beaker) was dry.

 

For a second I though you were referring to something huge that I didn't know. Thought I was being the idiot in this discussion for a minute :P I'm only going for my undergrad in biochemistry before med school so inorganic chem/physical chem is not really my wheelhouse. But resins are a pretty simple chemical synthesis.

Edited by Honeybadgers

Selling a boatload of restored, fairly rare, vintage Japanese gold nib pens, click here to see (more added as I finish restoring them)

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I have a Moonman and an Edison that have a fairly strong odor. Both seem to come from the inside of the cap. I can’t pick up the smell when the pan is closed but I can when I open it.

To hold a pen is to be at war. - Voltaire
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I have a Moonman and an Edison that have a fairly strong odor. Both seem to come from the inside of the cap. I can’t pick up the smell when the pan is closed but I can when I open it.

That's kind of odd, if its the material then it should smell equally bad on the barrel and if its with the ink reacting or having something with the material , then it should also smell where ink can act/react with the material ( the section for the most part ) but only the cap that's kind of hard to nail down the issue .. are there something in the cap that's not there on the other part of the pen .. I cannot think of any , might be the clip but if its so it should smell from outside right !!! ????

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That's kind of odd, if its the material then it should smell equally bad on the barrel and if its with the ink reacting or having something with the material , then it should also smell where ink can act/react with the material ( the section for the most part ) but only the cap that's kind of hard to nail down the issue .. are there something in the cap that's not there on the other part of the pen .. I cannot think of any , might be the clip but if its so it should smell from outside right !!! ????

 

It's typical. The reason is that the inside of the cap, section, and inside the barrel are not exposed to air, therefore they do not have the ability to "air out" and get rid of those residual vapors from the solvent used in the acrylic, so as the acrylic finishes its setting, if the pen is assembled and capped, it dries from the outside-in, so the smell will quickly dissipate on the exterior, but on the interior, where the vapor cannot escape, it cures more slowly since the solvent vapors remain trapped.

 

So as a result, you smell the solvent on fresh acrylics from the inside turned surfaces for much, much longer than the exterior. The best way to get rid of this is leave a freshly made acrylic pen in a well ventilated area completely disassembled for 1-4 weeks. That's why ammonia or soap baths or ultrasonic cleaning won't solve the problem - the acrylic can take months to cure to the point that all residual odors from the solvents in the acrylic are dissipated.

Selling a boatload of restored, fairly rare, vintage Japanese gold nib pens, click here to see (more added as I finish restoring them)

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