A more powerful magnetic strip arrived this week, and it worked perfectly! With only a couple of centimetres of strip on each corner, the 25cm square (and 5mm thick) plywood board was fully supported and firm on the wall. At the same time, it was easy to pull it off and fix it back on.
This means my idea for a variable composition will be easy to implement. Pleased.
Also got another batch of inked up squares done in the garden, with the birds singing. Summer days.
