Summary Diffuser for Energizer romeo; The beam was too dirty, was focused on the LED die really annoying! The thickness of 1.92mm was selected for the nozzle to make 0.4mm 4 perimeters. Now the torch is much more usable. Lose a few lux distance, improves lighting closely. Use transparent filament; I used transparent PMMA. (Plexiglas) Print Settings Printer Brand: RepRap Printer: Prusa i3 R2 Rafts: No Supports: No Resolution: 120 micron Infill: 100% Notes: Using clear filament ; Nozzle > 0.4 Perimeter shells > 4 Exstrusion Width > 0.52