A copper-free area can be created using a Solid Region by selecting the **No Solid** option:  Play with it in a dummy PCB project and check the Gerbers to see how it works. :)

Hi Thanks for the reply. But try as I might I cannot get it to work. Maybe I explained incorrectly. I need a circular track 5mm in width, about 25mm radius, with no mask. But this track needs to be cut into individual segments.and connected to pins on an i/o expander chip there will be a rotating wiper that will will do this.

1. You can use the Arc or the Arc Centre tool to create a single segment of a bit less than 1/N th of a circle where N is the number of segments you require and allowing space for the gap between them;  2. Adjust the width;  3. Right click and do Convert to pad (which will automatically remove the solder mask to expose the copper);  4. Copy, paste and rotate to create N segments with gaps between them in a circular arrangement (the **Format - Distribute Array** tool might be useful for this);  5. Renumber the pads as required. A better way to do this is to first create a suitable Schematic Symbol and then do the steps above but in the PCB Footprint Editor so you can save it as a PCB Footprint the name of which you can then assign to your Schematic Symbol.

Like this?  Done using several 'arc center' (U) circles with the same center, 5mm width and 25mm radius. Each 'arc' has a start and end angle so you can choose exactly where each 'segment' starts and ends. Not sure if the ends can be made square but you may not need that. Regards.

@mrtom528, Exactly. :)

@andyfierman LOL..we posted at the same time, I was actually replying to the OP but didn't hit the reply button, I didn't see your post until too late, sorry. Regards.

@mrtom528, No, I realised but your image was coincidentally just the thing to illustrate my description.

@andyfierman Yes exactly like that. Thanks I will try that. I do really need the ends square however, but may work