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Best way to widen a buttonhole with plexi already installed?
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selfie:

--- Quote from: McHale on July 05, 2013, 04:48:10 pm ---

--- End quote ---

Bad idea.


--- Quote from: Le Chuck on July 05, 2013, 09:04:45 pm ---Dremel with a drum sanding head.

--- End quote ---

That is the only way I would consider doing it. Use the biggest drum sander that will fit in the hole. If you are limited by tool choice use the largest half round file that will fit in downward strokes only. You should be using a cross cut file, smooth or very smooth grade.
lilshawn:
for as much f-in around as you'd do, trying to do it some other way, you might as well just disassemble the panel again and re drill the hole.

 :dunno
Lilwolf:
You many want to remove the plexi, then mount it to another board.  Then drill with a bit with the center point, and edges raised (don't know the name, but most of my cheap, larger bits are like it).  And go slow and score it slowly.

Chance of messing up the plexi is pretty high.
kahlid74:
Do it right, don't take the easy way out.  Take it apart and Dremel with a drum sander until it fits.  You'll be so much happier in the end.  Take it from a guy who has taken the easy way out before and regrets it every time.
GoYouSalukis:
If the spinner has a substantial overlap that will hide the edge of the hole, I would use a half rounded file to enlarge the hole. It might be a good idea to use a sharpie around the edge of the hole so that you can see how much material you are removing.
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