[simpits-tech] backlit panels 101

[Erwin Neyt]

> The light plates are about 0.250" thick.  They are cast 
> acrylic.  Lamps are embedded into the cast and the wiring 
> embedded into the cast, too.  There is a small circular 
> connector embedded into the casting that is 0.250" round. It 
> is a coaxial style that looks a little like the old RCA Phono 
> plugs on stereos, but smaller.  The press into the receptor 
> that is mounted on the back plate.

I believe this is type IV. In Type V the wiring/bulbs are on a PCB which is
screwed onto the back of the light plate.
 
> The light plates are first painted white, then a coat of 
> black is added to all sides.  I do not know the exact 
> technique to make the letters, but they are probably engraved 
> using a laser or something.

The black paint is removed with an (photo)etching process.

Erwin.