Grid Board Marking

Started by hammurabi70, 09 May 2020, 03:52:16 PM

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Lord Kermit of Birkenhead

But wouldn't the sheep dogs round em all up....
FOG IN CHANNEL - EUROPE CUT OFF
Lord Kermit of Birkenhead
Muppet of the year 2019, 2020 and 2021

mmcv

No idea if this would work but what about pin pricks in the base sheet? I.e. use a thumbtack to mark the corner edges by making a small hole. May be visible enough without being intrusive? Or lay out a 3d grid under the mat so there's only small mounds at the corners when the mat is laid over? These would probably only work with a light sheet, wouldn't recommend with a mousemat style!