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I have a Creality CR-10 S5 which is using Marlin firmware 1.1.6.

I recently got a level to level my printing bed, good high precision one.

Afterwards it was printing as if my bed was not level.

I assume that the 3D printer has old bed leveling data stored from its previous calibration.

  • How do I clear this old data?
  • Can I enter new data manually?

The printer doesn't have auto leveling with the current firmware. I tried the old firmware, and the auto-leveling system didn't level the print bed.

I have no bed leveling sensors.

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  • $\begingroup$ You are implying manual Unified Bed Leveling procedure of Marlin? Or are you using a bed leveling sensor? Or a bubble level? Please elaborate the question to include more information. $\endgroup$
    – 0scar
    Dec 9 '20 at 7:56
  • $\begingroup$ It sounds like you are literally leveling the bed to gravity (you said you used a level). This is not what you want. The actual definition of bed leveling is making the bed parallel to the XY motion of the print nozzle and an appropriate distance to the Z=0 position. It doesn’t matter (within reason) if the bed is leveled to gravity. $\endgroup$
    – DoxyLover
    Dec 9 '20 at 9:42
  • $\begingroup$ Using bubble level for the bed is useless (unless you level the whole printer frame, which you should not do), you need to level in reference to the frame, see this answer. $\endgroup$
    – 0scar
    Dec 9 '20 at 12:59
  • $\begingroup$ Apparently my floor isn't level, so I re-leveled it, making it as unlevel as the floor. Have to test it later tonight. Any one recommend a good bed leveling device. However, the side that was too high I had to tighten a lot so that's a good sign. $\endgroup$
    – cybernard
    Dec 9 '20 at 13:32
  • $\begingroup$ Do you send G29 to your printer or do you use G28 in print startup? I use a dial gauge to level my bed. $\endgroup$
    – Trish
    Dec 9 '20 at 14:48

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