There are two versions. One has buttresses behind the horns to support printing without added supports. I've printed both with & without supports and they both are functional. The buttresses seem to keep the back of the horns clean. I painted them with acetone to bond the layers and dress it up a bit. My printer settings for this were: 0.4mm nozzle 0.3mm layer height 3 perimeters 40% infill 3mm brim Hung with drywall screws but you could use other anchors depending on your wall and confidence.