This sign is designed for two color prints and uses (4) 8 X 3 mm magnets.
The holes for the magnets do no not require supports and are designed for a press fit, but I recommend a drop of glue in each hole if you plan on moving them a lot.
There are two version of this.
Chalant V0 has a thick border around the text and is the one shown in the picrue.
Chalant V1 has a thinner border and is offset from the edges of the sign.
The author marked this model as their own original creation.