The lab has several Prusa MK3S 3D printers.
Recommended software: PrusaSlicer
All Prusa Printers run on FW 3.12.2 (18.03.2023)
Textured Printsheets can be used for any filament
Please don't print PETG/CPE on the Smooth Sheets
PETG tends to fuse to PEI and never come of ever again
Use the Textured Bed for PETG
PLA/ABS/ASA is okay
PolyPropylene on smooth Sheets are best if you apply transparent packing Tape first
This is a very basic guide for using PrusaSlicer to generate G-code. Check Prusa's Knowledge Base for comprehensive details.
The standard input file format for a 3D printer is G-code. To generate it, you will need:
To generate G-code for your object:
Sometimes it's better to rotate object in order to reduce overhangs.
By default PrusaSlicer uses grid infill. Adaptive Cubic is just as fast and stronger so it's probably good to change it. There are some other options which can change the print time and strength of the object.
By default Prusa MK3+ profile in pruse slicer heats nozzle to first layer temperature before bed mesh leveling. This can cause dripping of filament, especially PETG, during leveling. If you experience it change in custom GCode in settings from
M104 S[first_layer_temperature] ; set extruder temp M140 S[first_layer_bed_temperature] ; set bed temp M190 S[first_layer_bed_temperature] ; wait for bed temp M109 S[first_layer_temperature] ; wait for extruder temp G28 W ; home all without mesh bed level G80 X{first_layer_print_min[0]} Y{first_layer_print_min[1]} W{(first_layer_print_max[0]) - (first_layer_print_min[0])} H{(first_layer_print_max[1]) - (first_layer_print_min[1])} ; mesh bed levellingto
M104 S170 ; set extruder temp M140 S[first_layer_bed_temperature] ; set bed temp M190 S[first_layer_bed_temperature] ; wait for bed temp M109 S170 ; wait for extruder temp G28 W ; home all without mesh bed level G80 X{first_layer_print_min[0]} Y{first_layer_print_min[1]} W{(first_layer_print_max[0]) - (first_layer_print_min[0])} H{(first_layer_print_max[1]) - (first_layer_print_min[1])} ; mesh bed levelling M104 S[first_layer_temperature] ; set extruder temp M109 S[first_layer_temperature] ; wait for extruder tempThis makes the mesh leveling at 170 °C. Profiles for Core, XL, and Mk4 have it by default so no changes there are needed.