Removing solder mask from RF traces

Layout
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I have a fairly complex RF board and need to remove the solder mask from the RF traces - but not from around the footprints as the parts will be hand soldered. I tried drawing over the traces on the mask layer but I can only get 6 mil traces. Must be a setting somewhere for that, but I can’t find it. My 50 ohm traces are 38 mils. Thanks for any help.

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You can draw polyline on mask layers and edit each segment thickness individually or change default line thickness in Board setup -> text and graphics.

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What Version of KiCad are you using?

Edit then Edit Text & Graphic Properties… should get you started.

Also, should that menu item be a little un-intuitive, you should be able to edit each segment, or the entire graphic item of multiple segments (with some “Shift” or “Alt” or “Ctrl” press while left-clicking a single segment).

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You may have a look at here:

Solder mask net clearance would be the needed option.

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I can do it successfully by editing individual trace segments. Just thought there might be an easier way.

Thanks - bdh

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