This marker holder will hold most standard whiteboard erasers and dry erase marker brands. If not, just scale it up a bit. You can attach it to the wall with adhesive strips.
55mm per sec - 60mm per sec
Nozzel temp - 200 C - 220 C
Bed temp - 50 C
You will have to clip off all the support material.
I used Rhino 5 to create the 3D model.