Klipperize Prusa Mk3

This repo is for sharing the results of my efforts to upgrade the performance of my Prusa Mk3s. It is not a project aimed at mass adoption and therfore does not include modularity for individual variations in component selection.

That being said, I designed the printer to use the Rapid Burner by chirpy2605 aka waytotheweb, which is designed to work with the Voron v0.2. This means that my mods will work with any design that is compatible with the Voron v0.2 tool mount. Chirpy has a wide array of options for hotends, fans, extruders, and LEDs, so by Chirpy's efforts my mod can accomodate most people's hardware choices.

This project is still a work-in-progress, so expect files to change until I am satisfied with the result.

My hardware configuration is as follows:

• Rapid Burner in slideswipe configuration
• Rapido UHF
• Sherpa Mini with RIDGA modification
• EBB36 CANbus toolhead PCB
• SKR mini e3 v2
• Raspberry Pi 4 running Klipper

Benefits

• The stock prusa toolhead weighs 550g, depending on how you weigh the wires and bearings. The Prusa adapted Rapid Burner weighs 334g, a weight saving of 216g
• The stock E3D V6 hotend has a volumetric flow limit of around 20 mm³/s, 25 mm³/s with a CHT nozzle. The Rapido UHF, with a 0.4mm Volcano nozzle has a flow limit of 24.1 mm³/s, 29 mm³/s with a CHT nozzle. Higher flow rate means faster prints.
• Input Shaping
• Fan headers allow more fans, and are easy to control with software
• Klipper's error logging is extensive, unlike prusa's error logging
• Macros
• The part cooling fans of the Rapid Burner are stronger than the Mk3's single blower fan
• RGBLEDs go brr
• Can use buttons as triggers for code, making predetermined tasks such as preheat much faster
• Filament diameter compensation
• Easier object exclusion
• Finer control on heater/stepper turn off
• Wait on chamber thermistor for automatic chamber heating
• Finer control over bed mesh pattern

BoM

• 3 x MLX 42021 female crimp 2 circuit recepticle Digikey
• 3 x MLX 42022 male crimp 2 circuit recepticle Digikey
• 1 x MLX 42021 female crimp 4 circuit recepticle Digikey
• 1 x MLX 42022 male crimp 4 circuit recepticle Digikey
• 10 x MLX 36536 male crimps Digikey
• 10 x MLX 36535 female crimps Digikey
• ~1m 16awg wire (two colors)
• ~50cm 18awg wire (two colors)
• ~1m 20/22awg wire (three or more colors)
• 1 x SKR Mini e3 v2
• 1 x Raspberry pi 3/4
• 1 x BigTreeTech U2C
• 1 x BigTreeTech EBB36 CANbus
• 1 x 140mm Fan
• 16cm x 25cm mosquito net or wide pored cloth
• 2 pin microfit 3 connectors
• 4 pin microfit 3 connectors
• 12 pin microfit 3 connectors
• 14 pin microfit 3 connectors
• 4 x 6mmx3mm circular magnets
• M3 Hardware

Printing Notes

• add negative volumes to the edges of the x axis ends

Suggestions

• when soldering leads onto the bead thermistor that goes into the heat creep sensing pocket, try to make the solder joint as thin as possible, or you'll encounter clearance issues with the cable channel