The Adapter allows the Sharpie to add a color layer to a print before the print is finished. You retract the filament before the print is finished and push the Sharpie down so it engages the print.
Because the Adapter is offset from the printer nozzle, a second print is designed at the location of the offset. The Sharpie prints on the offset. A sample print (Happy Birthday) is provided.
The Adapter design includes thin supports for the overhang.
The author marked this model as their own original creation.