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Old 16th March 2006, 12:11 PM   #1
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Default Lighted Knobs...How?

I've acquired a bunch of knobs that, when backlit, the "pointer/indicator line" will light up. The backsides are clear plastic (resin?). They are just over 1 inch wide, for a 1/4" shaft.

So how is this done? Are there ready-made LED fixtures ? ...or must I futz with it on my own?

=RR=
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Old 16th March 2006, 03:09 PM   #2
Apex Jr is offline Apex Jr  United States
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As I recall the mil-spec lighted knobs were illuminated
from a blackend plastic panel with parts left white so a
light say a small 327 lamp 24V could be put into the plastic
in certian spots to illuminate both the panel and the knob.
Steve @ Apex Jr.
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Old 16th March 2006, 03:20 PM   #3
vixr is offline vixr  United States
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there is a device called a "light pipe" that is also used... optic fibers routed to a remote LED that carries the light thru the tiny fibers, to the knob
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Old 17th March 2006, 09:09 PM   #4
cpemma is offline cpemma  United Kingdom
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One system using acrylic rod for the knobs - Final result and How-to

And another method with these aluminium knobs from the same guy.
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