This is a stand for 2 felt-tip markers, that color your filament on the go. My results are best with white filament Please 'LIKE' before collecting! Thomas www.3daybreaker.blogspot.com Update 19-01-2013: I have changed the measurements a bit and re-wrote it to be generally parametric. So you can easy finetune for your own brand of markers (I removed W.I.P. status for now) .STL file is for the item on the foto (In fact V2). The SCAD file is v3, not printed yet. Print with 15% infill, it need not be very strong. No support needed. Print one stand and 2 marker caps. It is designed for 1.75 mm filaments Extra material needed: piece of sticky velcro. Maybe drill the filament hole a bit, for droops may have fallen into it. Drill a hole in the velcro for the filament. Retract the filament from the extruder (hot only) Feed the filament through the new stand and into the extruder again. Slide down the the stand and fix with some double sided velcro tape, matching the filament holes of it with the extruder. Put 2 markers in the support holes. Put caps on the markers add pressure to the caps by stretching the rubber bands over it to the hooks of the stand bottom. Start printing.