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  • Author Author: yahyatawil
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Enhancments to negasilk ULP for inverted silkscreen

yahyatawil

Hello

 

I used negasilk.ulp for a while for inverted silkscreen, but I decided to enhance it a little and make it easier.

 

Steps:

 

1. First create your art work (Polygon in top layer with text inside it on layer 41 tRestrict with vector font type).

2. Run Ratsnest.

3. Name the polygon with "NEG_SILK" to make it special from other normal polygons.

 

With this enhancement there are no need to run any script file and also can help you to add negative silk screen within a design has already other polygons.

Attachments:
neg_silk.zip

  • With Eagle 6.1.0, I try the original NEGASILK and the NEG_SILK presented here. Although NEG_SILK is simpler because there is no file to open and modiffy, the result after printing for using dry film resist is not the same, rendering the NEG_SILK unusefull for that purpose.

    See the images hereonder.

    At  high power, one can see that certain routes are interrupted, which is not the case with NEGASILK. This is due to the fact that layer 21 is added and superimposed (in black) to the PCB.

    _

    image