[R-390] Transformer restoration?

[Jim Whartenby]

AndyIn college, some 45 years ago, I took a one term elective which was composed of photography, silk screen, typeset printing and rubber stamp making.  It gave me an insight to what was involved in making alumina test fixtures and circuits, MMICs and integrated circuit mask making, in general.  
The process starts with the making of a transparency containing the image.  Then coating a silkscreen with a photo sensitive solution, drying the solution and contact printing the image onto the silkscreen and then washing away the image that was not exposed to light.  Light hardens the photoresist and what was not exposed to light dissolves in water.
Nothing is expensive or hard to do but it is a skill that needs some practice to master.  Things to know are the mesh count of the silkscreen which defines the resolution of the image and what type of ink or paint used and it's viscosity that will allow the image to transfer to the object i.e. transformer through the silkscreen.
There are a lot of YouTube videos on the process, not all that hard or expensive but it will be a bit time consuming.  eBay has the silkscreen, paint can be found everywhere.  What I know of you, you will enjoy the process.  I certainly did!Regards,Jim

Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy

-----Original Message-----
From: James A. (Andy) Moorer <jamminpower at earthlink.net>
To: R-390 at mailman.qth.net
Sent: Sun, May 21, 2023 9:10 am
Subject: [R-390] Transformer restoration?

Anybody know how to refinish the power transformer, including the cool 
silk-screened graphics? Is there a way to use your computer printer to 
make a silk-screen mask? I can make up, say, an Illustrator file with 
the graphics, but I'm not sure what to do with it.

Thanks.

-A

-- 
James A. (Andy) Moorer
www.jamminpower.org

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