I installed Björn’s 1.15.6 firmware and believe I need to be schooled on Tramming.
This happened before latest firmware. I assumed Tramming was a more accurate procedure to level the SV04’s bed. I would first use AUX Leveling using a paper as a feeler gauge. I then run the Tramming routine which indicates I didn’t do well with the AUX Leveling so I keep running Tramming until all four corners are 0. After this I run the auto bed measuring routine and then Save.
The problem is that after Tramming, the back of the bed is too high relative to the front. If I then rerun the AUX Leveling, omit Tramming and rerun the auto bed measuring, the bed looks to be level after running the same test print. I see the M420 S1; runs right after the G28;
So, maybe I do not understand the Tramming feature. What am I doing wrong?
Hello Paul,
tramming will adjust the bed according to four probe points, that are located at/near the hot-bed
fastening points. I wrote a leveling procedure for my firmware version. Correct hot-bed temperature & saving afterwards are important steps in that procedure.
AUX leveling will move the nozzle to the same positions that tramming uses for touch sensor probes.
The paper distance method is useful for adjusting the Z-axis compensation (distance between nozzle tip and touch sensor), only. Z-axis compensation has to be set done once after EEPROM reset or in case of nozzle modifications. In case of a bad first layer print it could help to adjust the Z-axis compensation.
/R
Björn
Thanks for reply and leveling doc. I will re-level accordingly. I’m not sure an overall z-axis compensation adjustment will correct what I am seeing - The majority of the print starts out OK, but the back of the bed is too close to the nozzle. I also save measurements after probing.
I am seeing an issue when running out of filament. Refueling and resuming fails as the bed temperature is maintained, but nozzle temperature drops to room temperature even though the setting indicates running temperature (205° in my case). After a few minutes, I get an error that: “Heating Failed! Power Cycle required!” Just thought I would offer this info.
Hello Paul,
thanks for letting me know. It will bit hard to analyze the nozzle temperature loss after refuel/resume without further details, but I’ll have a look at the source code iot find a clue.
/R
Björn
Thanks for looking, Björn. If I can provide any useful details, let me know. This did happen with a previous firmware version. It was a recent version, but probably not the next previous one.