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Author Topic: Rapidograph Pen Set  (Read 692 times)

Offline t michael jennings

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Rapidograph Pen Set
« on: April 12, 2013, 12:01:30 PM »
Gentlemen,

I purchased a full set of Koh-I-Noor Rapidograph Pens at an estate sale.

The owner failed to clean out two of the pens.  Unfortunately, I was not able to contact him and ask for advice.

What is the best solution to soak the pens to dissolve the dried-up ink in the pens.

The set contained Koh-I-Noor "Waterproof Black India RDS" ink.  I assume that is the type of ink dried in the pens.

Thanks for the helping hands that is sure to come.


T Michael Jennings            y1
Knoxville,  TN


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Offline Derek Barry

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Re: Rapidograph Pen Set
« Reply #1 on: April 12, 2013, 12:34:57 PM »
Try warm water first. If that does not work try rubbing alcohol.

Derek
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Offline RC Storick

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Re: Rapidograph Pen Set
« Reply #2 on: April 12, 2013, 12:42:27 PM »
hot water and a ultra sound if you have it. If not just hot water.
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Offline Joseph Lijoi

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Re: Rapidograph Pen Set
« Reply #3 on: April 12, 2013, 01:39:34 PM »
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Offline Glenn (Gravitywell) Reach

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Re: Rapidograph Pen Set
« Reply #4 on: April 12, 2013, 11:44:35 PM »
Yep, been there done that!  Soak in hot water, then work nib inside the pen barrel till it is clear.  Its really the only way. H^^
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Glenn Reach
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Offline Tom Niebuhr

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Re: Rapidograph Pen Set
« Reply #5 on: April 16, 2013, 05:27:47 AM »
We have a drafting supply place in Carrolton TX that has been in business forever. They recommended using Windex, not the cheap window cleaners. This works better than the Koh-I-Noor cleaner.
I general completely disassemble the pen. Be very careful with the moving plunger.  Use an ultra sonic cleaning unit. Patience is the key.  
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