Method Of Painting the Inside of Pen Blanks

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Hartwell85

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Joined
May 14, 2021
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98
Location
Findlay, OH
I was looking for a better way to apply an even coat of paint to the pen blank hole after being dissatisfied with the common techniques I found. I tried painting the hole using a Q-tip but did not always get an even coat. Also had to deal with cotton fiber fuzzies. Tried spray painting the hole after watching a video on YouTube but the results were disappointing. It was difficult to get sufficient coverage in the middle of the blank without having an excessively thick coat of paint at the ends. In addition, paint would usually settle to a localized thick coat on the blank that made it difficult or impossible to insert the tube without scraping paint out of the hole.

After much thought on the problem, I found that nylon straw cleaning brushes worked very well to easily apply an even coat of paint. I bought a set of multiple size brushes on Amazon (links below).

This method works with acrylic or enamel paints although acrylic paint dries faster.

To paint the hole:
  • Find a brush that is about the same size as the hole or slightly under size. You don't want to use a brush that fits tightly because it will scrape paint along the wall of the hole and splatter paint everywhere when you pull it out of the hole.
  • Apply paint to the lower third of the brush. Either squeeze paint from the bottle onto the brush or roll the brush in a puddle of paint. Don't apply too much paint to start. If coverage is insufficient, you can add more paint to the brush and reapply or recoat after the first coat is dry.
  • Insert the brush into the hole and apply the paint in a similar fashion as gluing the tube into the blank. Gentle motion works better than aggressive.
  • On larger diameter holes, you made need to run the brush around the hole in a circular motion to get full coverage.
  • If you observe light areas in the paint after it has dried, just apply a light coat again.
Cleaning the brush is easy if acrylic paint is used. Enamel paint can be cleaned off using mineral spirits.

I am getting good results with this technique. I always drill the hole slightly oversized to compensate for paint thickness.

Link to the Straw Cleaner Brush Kit that I use:
https://www.amazon.com/Hiware-Drink...db9df&pd_rd_wg=by8u9&pd_rd_i=B06XDK78GQ&psc=1

Alternate Straw Cleaner Brush Kit:
https://www.amazon.com/dp/B08LMJV5PH/ref=redir_mobile_desktop?_encoding=UTF8&*Version*=1&*entries*=0
 
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jttheclockman

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Feb 22, 2005
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19,148
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NJ, USA.
That is what this hobby is all about. Try things and find things that work well for you. also you are sharing your results that may help others To me I never had a problem with q-tip or spray painting so those are my methods. Good luck as you continue down the path of this hobby.
 

mick

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Mar 13, 2005
Messages
2,608
Location
Decatur AL, USA
I found out early on that buying the "real" Q tip brand made a difference. They don't seem to leave as much fuzz behind as off brand swabs. YMMV.
 

jrista

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Aug 12, 2021
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2,241
Location
Colorado
Hi all, I'm curious, why do you paint the inside of the blanks?

With resins, many of them at least, they have some amount of translucency. Once turned down, you can often see the brass tube. Some people paint the tubes, however that can potentially still allow you to see glue (and its inconsistent or uneven application between the tube and the blank once set, which is often the case) through the translucency of the blank.

So instead of (or sometimes in addition to) painting the tube, you also paint the hole. Makes sure with translucent blanks of any degree, you can't see the "nasty junk" inside. ;)
 

cmiller

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Joined
Nov 23, 2015
Messages
111
Location
Eugene, Oregon
With resins, many of them at least, they have some amount of translucency. Once turned down, you can often see the brass tube. Some people paint the tubes, however that can potentially still allow you to see glue (and its inconsistent or uneven application between the tube and the blank once set, which is often the case) through the translucency of the blank.

So instead of (or sometimes in addition to) painting the tube, you also paint the hole. Makes sure with translucent blanks of any degree, you can't see the "nasty junk" inside. ;)
I see, thanks for the explanation. I don't work with resin very much, but I'll remember this
 

aRMdaMAN

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Joined
Jul 23, 2021
Messages
65
Location
DURBAN, SOUTH AFRICA
Hello there from across the pond deep down in SA
Thanks a zillion for this
Have had the same problems initially
Those bottle/Straw cleaning brushes make sense
ATB
TC
aRM
 
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