Track with no solder mask covered for pcb edges

Is it possible to draw a tracks which are not covered by solder mask?
What I want to do is, draw a track around the pcb edges which is connected to the shield net. About 2-3 mm wide.
This track should not have solder mask on it, as it must connect to the metal enclosure where it slides in.
It does not have to go around the edge, but should be on top and bottom layer.

Thanks in advanceā€¦

I think the simplest is to clone the PCB outline onto F.Mask and B.Mask layers, with a width of 2x your overlap.
You can draw this, if simple, or if complex you could locate the PCB lines in the Kicad_pcb file and copy/edit layer & width.
I just did a Copy/Edit to 6mm linewidth in Kicad_pcb on a PCB with ARCs fine.

Any trace or Copper that is close to the PCB edge, is now bare.

You can clone inside KiCad, on a segment by segment basis, and a quick ^D.Enter.E seems to overlay, (openGL mode) without touching the mouse.

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I will try it out, thanks.