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Philcoradio.com < Tech Section Index
A Fix for Warped Mystery Control
Dials
By DAN ROBINSON
As originally posted in
The Antique Radio Forum, October 29, 2006. Posted here by
permission from Dan Robinson.
I made this
jig set up to straighten warped Mystery Control dials.
I took two Stainless Steel plates, bored a hole in the center of one
of them, to fit the flange on the back of the dial. Then I
sandwiched the dial between the two plates, and added 4 clamps at 90
degrees from each other. I snugged up the clamps just to hold the
set up together. I place the jig and dial into a pot of water, and
brought it up to boil (don't put part into already boiling water.) I
let it heat up for about 5 minutes, then evenly tightened the clamps
until the dial was flat. I then removed the jig set up from the
water. Placed it in an empty sink with the stopper in. Slowly add
cold water to the sink, until the jig is submerged completely. Let
it cool for about 15 minutes, then remove the clamps.
Like magic, the dial is flat as new....
How a typical Mystery Control dial
looks - warped.
The jig in action.
The dial, now straightened out and
ready for use.
Thanks to Dan Robinson for
sharing this with us.
Photos by Dan Robinson (middle and bottom), Ron Ramirez (top)
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