Clapper Slate (aka Clapperboard) is a single print, with no assembly required.
I have been looking for a clapper slate for a while and could not find a authentic looking one, so I decided to create one base on a typical cliche design.
The print needs support which can be easily removed by pilers. To set the joint free, insert a cutter/knife into the gap and twist to break the support apart. Model paint is recommended but a permanent black marker will do just fine. White board marker works for writing on the surface and should be erasable.
Default size is 13cm by 11cm.
0.3mm (That's what I used)
Requires Support. Higher print quality recommended for the letters to show better. Minimum tolerance is 0.3mm.
Remove support by pulling with a piler.
Break free the joint
Insert a cutter/knife between gap, twist until a snap for the joint to break free
Use model paint or just permanent marker to paint the board and the letters and you're done!