Nozzle gets closer to the bed every time during first layer (worse at higher temps).
I'm hoping somebody has had this issue before. I've ran through as many calibrations as I can find and just recently found the one here:
https://github.com/HelgeKeck/RatOS/blob/documentation_v2.1/site/docs/configuration/beacon_contact.md#6-first-print-and-fine-tuning
Everything works, even my beacon comes back with a 1 for the latency.
After the calibrations I'll print a large first layer - probably around 200x100mm
It'll start out PERFECT and about half way through the nozzle starts moving closer to the bed and I can see the lines start squishing out, if I adjust the z up to compensate (0.025 at a time it will adjust and keep printing good) - this is the fine tuning part further down on the page.
That's all find and dandy and the print will keep going nicely.
The issue then is the next print I do. The beginning of the first layer (which was perfect before at the beginning) is now too high because I saved the final z adjustment from before.
Today I used the "save_z_offset" command in the console and it supposedly adjusted the thermal setting, but after a couple more prints consistently back to back (just incase the bed wasn't heat soaked enough) and I still got the same consistent z height issues. Either too high at the beginning, or good at the beginning and too low at the end of the first layer.
This is also happening on all 3 of my ratrig 3.1 with beacons. I've ran non-ratos versions of klipper and the newest ratos with all the updates - doesn't seem to make a difference, different nozzles (E3D and Phaetus). Right now I'm putting an old pinda on one of the setups to see if it has the same issue ( I don't remember having this before I got my beacon sensors ).
Any ideas?? I'm at a loss and I can't babysit each of these machines through their first layer all the time - I shouldn't have to.
GitHub
RatOS/site/docs/configuration/beacon_contact.md at documentation_v2...
The preconfigured Raspberry Pi image that makes it easy to run Klipper + Moonraker + Mainsail on your printer. - HelgeKeck/RatOS
3 Replies
I believe many of us are having the same issue. I always have to increase z height by about 0.07 for it to start flattening out. The trouble is even though I don't save the z height it ends up re-meshing every print so I have to adjust again and again. There is a post here somewhere where Mikkel says to add an temp offset in the printer.cfg or something to save changes for different filaments.
Well, I'm glad I'm not the only one. I'm going to be testing out a pinda setup over the beacon and see if I have any better results. Hopefully it at least gets me printing again.
Ok, so I have an update - I'm pretty sure it's something with the beacon or the beacon programming. I installed a pinda probe on one of the printers I've been fighting, flashed a fresh copy of the newest ratos, PID calibrated the hotend, bed and did a proble_calibrate with the nozzle and bed at temp and printed my big test part and it layed down the first layer as consistent as I expected it to - the nozzle did not get closer to the bed at all. Hope this helps anybody else. I'll be running the pinda on a couple machines for the time being until we hear more from RR or Beacon.
It's good to read through this and see if this is similar: https://discord.com/channels/582187371529764864/1292556582336335904