How to resume a failed print on an ender 3 pro running Klipper

- Find a new spot to home
- Measure the height of the print
- Find the spot in your print .gcode where your print failed
- Select and delete from the start-up code, (ensure to remove any bed mesh, line purge, etc.), all the way to where it failed. My print stopped at 15.8 but really need to delete until layer 16 as layer 16 will start back on 15.8. Not doing this will cause the print head to crash into the print
- Reupload modified file
- Wait for the rest of the print to complete

[DavidMiOo]

Measure the model height with a caliper unless you know which layer it stopped on, then you can get the height from the slicer.
Using Orca as an example,
1- Use the cut function to slice off whatever you measured on the model or got from the layer height.
2- Disable brim and bottom solid layers.
3- Setup a new machine profile that DOES NOT HOME
4- Home the printer manually and touch the top of the model, somewhere within your last printed layer. If you don't have a touch style probe you can use something like a thin metal ruler and then subtract its thickness.
If you can't hit a spot on the model try to use something like a piece of paper pulled tight across the model if you have a touch probe, otherwise, use a ruler or similar and subtract.
No need to subtract with the paper method.
5- Begin your print and reduce print speed to 35%, this will help melt the previous layer into the next and blend any imperfections.
If your bed doesn't home in the center, well why? You should only be using your bed level sensor to home, if you're using a second sensor on your gantry, why? You're not adding any failsafe's, you're just adding more reasons why your first layers suck or are inconsistent.

[julior]

What about the parts of the last layer that were already printed before the fail? Are they printed again? Because all layers must be started from the beginning right?