My printer is printing in the air (bltouch issue)

[Sineos]

@Mollerpeter

but if you meant saved bed mesh, then I was told it’s better to do a BED_MESH_CALIBRATE before every print instead of using a profile due to my bed’s size.

Ah, ok. Understood

@Mollerpeter

so I tried it and it actually got closer to bed. So this would be the official way to compensate for my height issue?

Generally speaking:

• You should follow the information here: Probe calibration - Klipper documentation
• This should give you a proper, “average”, z-offset. This one is true only at the spot where you calibrated it. It does not take into account
  • Bed flatness
  • Location bias caused by twisted axes
• This z-offset may be fine-tuned with SET_GCODE_OFFSET to account for different filament needs. As stated above, this also does not take bed flatness or location bias into account
• BED_MESH_CALIBRATE then scans the bed to compensate for bed flatness. Location bias cannot be compensated by this

All reports that are similar to this one and could be resolved boiled down to:

• A systematic error / bug in Klipper could not be identified
• Solution in most cases was fixing a mechanical location bias. Either caused by twisted profiles or “wobbling” axes, e.g. due to issues on linear components

Also refer to an extensive discussions here: Impossible Bed mesh leveling - Cr10sPro V2 - #73 by whoiswes