International Association of Penturners - View Single Post - Anyone use Barrel Laps like these for internal polishing
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Old 03-09-2017, 11:23 PM   #6 (permalink)
duncsuss
 
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Location: Wilmington, MA
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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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