Just Trying w/ Heated Beds and Klipper and Probes

General Discussion
1

Hello,

Currently:

  1. I have a heater_bed and performed this command:
    a. PID_CALIBRATE HEATER=heater_bed TARGET=70
  2. I had already set my PROBE_CALIBRATE command and used ACCEPT and SAVE_CONFIG.
  3. Before adding the heater_bed, the prints w/ PLA worked on tape and glue just fine. Well, sort of okay…there was a bit of curling but not much.

Now…

  1. I was using PETG and could not get it to stick to the surface.
  2. Hence, the PID_CALIBRATE HEATER=heater_bed TARGET=70 command.
  3. I switch back to PLA to test this heater_bed on the printer.

Currently, I have not been able to use the heater_bed w/ the PETG or PLA.

Would I need to reapply the PID_CALIBRATE command for a heater_bed of 60 for PLA after using that command for PETG?

Seth

P.S. I am trying to configure the heater_bed and I may just not know enough about 3D Printing in general to take on this task w/ Klipper and its many mechanisms.

So, when you have time, please try to understand.

2

PLA is quite easy when it comes to bed adhesion. You do not even need a heated bed for PLA
If you already need glue and a heated bed to make PLA barely stick then your Z-Offset is wrong. This means your nozzle is too far away from the bed.
Perform a proper offset calibration (Bed leveling - Klipper documentation) and make sure that PLA is pretty much “squished” into the bed. A bit less for PETG.

A good way to observe this is to print large brims and watch how the lines are put down. If they are barely squished flat, then decrease the distance, e.g. with the baby-stepping functionality.

Or print some rectangle with only one layer. If you take it off the plate it needs to be a closed layer with the individual lines firmly sticking together.

grafik
grafik800×318 34.2 KB

1 Like
3

Hello,

Thank you for your feedback. I will try the bed leveling docs. for future reference.

Seth

P.S. I will look into the z-offset.

4

Hello @Sineos ,

Seth here. I figured it out. You were right. The Z-Offset was way off and I needed to reboot the system after altering the .cfg file for my Recore board.

The offset for Z was 0 and I needed to have it at about 1.5mm b/c of the difference in NPN Sensor and nozzle along w/ where the build plate is located.

Thank you.

Seth

1 Like