Board making technique (10)

Thickness of the line of silk printing

In some of the printed board manufacturer( like OLIMEX ), the thickness of the line of silk printing of parts may be carried out to more than 10mil ( 0.254mm ).

In such a case, you can make it 10mil or more using a tool ( ULP:User Language Program ).

The tool to be used is silkwidth.ulp. However, this tool is not contained in standard EAGLE. It is necessary to include in EAGLE in the following procedures.

You can get original silkwidth.ulp from the homepage of OLIMEX. However, this tool does not operate normally in Version 4.09r2 for Windows. Below, my correction version is used.

Inclusion of silkwidth.ulp

silkwidth.ulp

You can download the ULP file by clicking

the link above

and save it to "ULP" folder of the Eagle. In my case, I saved to Program Files -> EAGLE-4.09r2 -> ulp.

Inclusion was ended above.

Execution of silkwidth.ulp

Open the board for processing.
Push Run button.

Choose silkwidth.ulp from the list of ULP and push the Open button.
By the above operation, silkwidth.scr is created to the folder in which the board file( .brd ) is stored.

Execution of silkwidth.scr

Next, push Script button.

Specify the folder which has a board file( .brd ) in the dialog displayed.
Choose silkwidth.scr and push the Open button.

By this operation, the silk printing line (yellow) of parts is drawn by 10mil or more.
The newly drawn silk printing line is recorded on the layer made newly.
Layer 121 : 21 tPlace related
Layer 122 : 22 bPalce related
Layer 125 : 25 tNames related
Layer 126 : 26 bNames related
Layer 127 : 27 tValues related
Layer 128 : 28 bValues related

I will show you the example of "A-stable multivibrator".

The state before SCR execution	The state after SCR execution Layer 21, 25 and 127 are un-displayed.
The display of only the layer of silk printing This is in the state which displayed only 20(Dimension), 121(tPlace related) and 125(tName related).