These are the prototypes of a solder paste mask for a small SMD circuit board. It was really just a test of Art's mathematics to see if the engraving plugin maintained it's scale and aspect ratio which, of course, it does. So easy to make that they are throw away items and don't really have to last for that many uses but we will see how they hold up. The cut-outs are the same size as the solder pads on the pcb which is perhaps a mistake as I now think that they could be made smaller and thus apply slightly less paste. As with everything new, you read-up on it first but practical experience always wins out in the end.
Tweakie.