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Air variable capacitor from scrap aluminum sheets

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Step 5: Marking the holes for the stator

Picture of marking the holes for the stator
Get a piece and draw a line from the center. Going to the left corner.
Get the centerline (from corner to arc) and punch a hole in it.
Mark this piece as pattern.
Put it on top of another piece. And puch a hole on the second piece under it. Using the hole on the first piece as a template. Flip the pattern and punch the second hole.
We do this because we will drill all the rotor and stator plates one at a time. I dont recommend stacking all the pieces and drill them all at one time. The drill bit always tend to bend. Or you may if you have a drill press
 
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