Es un conjunto de piezas para construir un pizarrón con un vidrio de 4mm.
It is a set to build a blackboard from a 4mm glass
you have to print 4 or more "pizarra3.stl". Then you have to screw it in the wall to holding a 4mm glass.
Then you have to print the piece "borrador - lapiz" to hold the pencils.
The "borrador - lapiz" piece you can to increase the holes to use a screw to join the piece to the glass.
Sorry for my English.