LDO-Voron-2.4r2

Forked from https://github.com/Frix-x/klipper-voron-V2

Many thanks to Frix-x for making his work public and the many hours he has spent working on this.

This is my actual config folder for my Voron v2.4 printer.

Please keep in mind, this is a WIP and the config files are being updated very frequently depending of the mods I add to the machine or just if I want to. Do not take it as a fully compliant config : think and adapt to your own machine. I also try to put all possible settings and customizations in the Klipper config as my ultimate goal would be to use the same Gcode file (sliced generically) with multiple materials or even share it across multiple printers. That's why I'm using firmware retraction, and I set Pressure Advance, etc... in my config.

Specific features & config

Config is divided in two folders : one for the hardware declarations and the other for all the macros. In these folders I tried to put everything in files to be able to find and modify everything easily.

Z calibration

I'm running the klipper Z calibration plugin to compute automaticaly a correct Z offset at the beginning of each print, even if I change the nozzle, the hotend, the toolhead, the PEI, etc... This thing is wonderfull ! This plugin lets you call the [z_calibration] config section and add some system macros as Z_CALIBRATE. It needs to be installed manually on top of klipper. Updates are done by Moonraker/Mainsail as well.

Klicky probe

To be able to use the automatic Z calibration process, I replaced the inductive probe by a touch probe. A BLTouch could work but not a good idea in an enclosed atmosphere and the Klicky probe is the way to go : it's very cheap and very precise. A lot of macros are needed for this one to work and it could be a little tricky at first. All the system macros that use the probe are overiden to be able to attach or dock the Klicky probe accordingly.

Purge bucket

There is a purge bucket at the back of the machine with a brush to purge and clean the nozzle tip just before calibrating the Z offset. This ensure repeatability and consistency in the measurements.

Nevermore and chamber heating

Under the bed is a Nevermore duo v5 recirculating active carbon filter. This filters the VOCs generated during printing but the dual 5015 fans also serves as a quick chamber heat distribution system during the pre-print phase.

Adaptive bed mesh

Only do a bed mesh if it's needed (ie. no mesh if there is only a small single part in the center of the bed, and/or only mesh around the parts with a small margin). To be able to use it, you need to add in SuperSlicer custom g_code :

PRINT_START [...common args...] SIZE={first_layer_print_min[0]}_{first_layer_print_min[1]}_{first_layer_print_max[0]}_{first_layer_print_max[1]}

Pre-print phase

The macro PRINT_START is dedicated to prepare the machine to print:

1. First this macro manages the heatsoak of the bed when needed. If I put the bed at temperature manually before starting a print, the macro will take care of that and will not do the heatsoak.
2. Then, there is a chamber heating phase using the nevermore fans at full power. This phase is customizable: it follows the chamber temperature setting from the slicer and there is also a timeout if the temperature is not reached in time. This phase ensures the chamber of the machine is at a good temperature for critical material like ABS that is very prone to warping and layer adhesion problems.
3. When the bed and chamber are at temperature, the machine goes for a quad gantry leveling, a purge of the hotend/nozzle, cleaning of the nozzle tip and auto Z calibration.
4. Then the macro applies custom material parameters like PA, nevermore filtering, retraction settings, etc...
5. At the end, an adaptive bed mesh is recorded before starting the print.