this post was submitted on 09 Aug 2024
14 points (100.0% liked)

3DPrinting

15525 readers
106 users here now

3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.

The r/functionalprint community is now located at: !functionalprint@kbin.social or !functionalprint@fedia.io

There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml

Rules

If you need an easy way to host pictures, https://catbox.moe may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is ![](URL)

Moderation policy: Light, mostly invisible

founded 1 year ago
MODERATORS
 

Homing your printer systematically before a print is redundant, a waste of time and sometimes even an issue (if your homing probe is misbehaving and you’ve already dialed an offset by need to restart the print for a clean first layer for instance) I recently came upon this G28 macro that only homes of the printed is not already homed.

[gcode_macro G28]
# Only home if needed.
rename_existing: G28.1
gcode:
    {% if PA %}
        G28.1 {PA}
    {% else %}
        {% if printer.toolhead.homed_axes != "xyz" %}
            G28.1
        {% endif %}
    {% endif %}

All you have to do is add this to your macro.cfg file and it will override any G28 command from any gcode and only execute a home if needed. If you want to execute a home even if not needed, you can send the command G28.1 or give it a parameter, like G28 X, or G28 XYZ and it will force the homing

you are viewing a single comment's thread
view the rest of the comments
[–] LazaroFilm@lemmy.world 2 points 2 months ago (1 children)

Then if the motors are released the home will activate. No issue there.

[–] ShepherdPie@midwest.social 3 points 2 months ago (1 children)

Yeah I meant it as more a heads up if someone finds themselves in a scenario like you described where their bed probe is on the fritz and they're hoping to work around that.

[–] LazaroFilm@lemmy.world 1 points 2 months ago

Also, this is for Klipper you can change the behavior of your printer to do whatever you want.