Anyone use Barrel Laps like these for internal polishing - International Association of Penturners
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Advanced Pen Making Kit-less construction; designs and challenges beyond those normally associated with kit pens.


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Old 03-09-2017, 08:33 PM   #1 (permalink)
 
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Default Anyone use Barrel Laps like these for internal polishing

Does anybody use barrel laps like these for polishing the inside of a kitless (probably demonstrator style) pen blank



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Old 03-09-2017, 08:57 PM   #2 (permalink)
 
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Most videos I've seen concerning kitless pen manufacture where the interior of the barrel would be visible or where the maker simply wanted the interior to be as clean as possible for holding and dispensing clean ink, the interior of the barrel was sanded and polished using a shop-made lapping tool. Typically a dowel or rod with a slot in it for holding the sandpaper or a bit of cloth with the polishing compound.

Makes more sense, in my mind, to make the required tool to your own custom specifications rather than to buy a kit full of tools that you'll likely never use 80% of them ... but I do like that the option is available! :)
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Old 03-09-2017, 09:01 PM   #3 (permalink)
 
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Old 03-09-2017, 09:15 PM   #4 (permalink)
 
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If those are what I think they are Mal they are used with abrasive paste or lapping compound. The grit imbeds in the lap (soft copper or brass) and it polishes the harder metal in a bore. It won't work in a soft material like plastic.

You can take a dowel or rod and cut a slit in it to wrap fine sandpaper in to make a simple flap wheel. When spun with a drill with some favorite lube the paper will spin out and polish the side of the hole.

I know Micromesh make polishing swabs (something like a Q-tip) that should work especially for the end of the hole.



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Old 03-09-2017, 09:48 PM   #5 (permalink)
 
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Thanks for replies, Skie, Tony, and Pete.

Skie, you don`t have to buy the whole set ... you can buy them individually of the size you need.

But I realize now that it would be more appropriate (for internal pen barrel polishing) to use a flap arrangement made from a slit dowel and a piece of abrasive paper, as Skie and Pete said.
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Old 03-09-2017, 11:23 PM   #6 (permalink)
 
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There's an excellent video on the Edison Pen Company website called "The making of an Edison Beaumont Demonstrator".

Here's a direct link to the Youtube video: LINK

Polishing the interior (using sandpaper in a slotted mandrel) starts at 7 minutes 40 seconds.

I found all the videos on the Edison site useful -- LINK
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Old 03-09-2017, 11:41 PM   #7 (permalink)
 
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I know one can make them, but I use these for inside polishing. They are pretty long.
https://www.amazon.com/SLOTTED-MANDR...=split+mandrel
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