Etching Emblems

 


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The challenge is recreating an emblem made of brass foil.  The original could not be saved and was destroyed during finish stripping.  I searched the world over and could not find a replica.  No decals, no foils, no joy.  

First I acquired some painted foil for scrap booking.  I do not have the coordination to hand cut with a razor knife the font. 

I tried a silk screen stencil.  But I could not get a clean sharp painted image in Gold or Brass paint.  The silk screen was sharp and detailed. But I was unsuccessful with the paint.

One night in front of the TV I read in a modelers catalogue about etching metal parts to make model towers, engine blocks, train steam engin tanks, metal rails, etc.  And a kit of materials is offered.  So I ordered this system: http://www.micromark.com/Micro-Mark-Pro-Etch-Photo-Etch-System,8346.html.  I figured this is exactly what I need!

I used to etch PC boards.  How hard could this be.  It turned out Fantastically!  

This is what I had to start with.

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This takes you to the radio's restoration page. 

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You can see some of the finish.  It is rough shape.

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Details of the ruined 

   
         

 

There are a lot of steps not shown that take place under safe-light (60 watt yellow bug lamps). 

1) application of UV sensitive enchant mask to metal.

2) Developing mask.

3) Stripping non hardened mask.

All these steps are explained in the provided instructions. 

 

 

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This is the mask made in MS Word.  A mirror image is needed for the back side of the metal. Microsoft word has the correct font and the ability to adjust spacing and kerning.  To rows are BOLD and two regular font.  See the file for all the retained setting. This image is perfect to the 1/2 mm when laid over the original remnants. 

Download MS Word file. For Non commercial use only.

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60w yellow bug light

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Bug Light.

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Mask

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Cut metal a little smaller than the mask. 

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Laminate photo resist to metal.

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Plexiglas exposure frame.

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Developed and scrubbed photo resist.

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Acid bath etching. Started at 5 mins after the hour.

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7 mins of etching.

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10 mins of etching.

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20 mins total.

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Hardened photo resist is blue.

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Brasso to polish after hardened photo resist is removed. 

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Nice!

     

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Kitty does not know what to do?

This bird is much much bigger than the sparrow was! 

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