Designed by Jarid, a grade 12 Drafting & Design student, to hang his guitar on his wall at home.We printed ours using red PLA on a Makerbot Dual. Infill: 100% Shells: 1 Nozzle Temp: 190 Bed Temp: 0 6 mm Bolts are required to mount to the wall. In addition holes have been made through the horizontal prongs so that an 8 mm countersunk bolt can be inserted in each hole (through the back) to give the prongs greater strength.