Ender-6
Firmware 1.0.4.9
Roughly every 3rd or 4th time I use the bltouch it seems to get offset by -5mm in the offset table. Other times it seems to work fine. When it screws up, if I add 5mm, the offsets align with what I typically get. When the table is off, it carves a nice score into my surface and grinds my nozzle down. This seems like a numerical bug in the firmware, not a simple mechanical issue.
The table at the bottom ("Add 5mm") very closely matches what I typically get from a good bed leveling. The "Screwed up Table" is what it is recording when it ruins my nozzle.
Any idea what is happening?
| Screwed up Table | |||||
| 0 | 1 | 2 | 3 | 4 | |
| 0 | -4.815 | -4.924 | -5.07 | -5.185 | -5.272 |
| 1 | -4.981 | -5.048 | -5.172 | -5.252 | -5.328 |
| 2 | -5.165 | -5.213 | -5.308 | -5.356 | -5.405 |
| 3 | -5.318 | -5.349 | -5.432 | -5.457 | -5.495 |
| 4 | -5.449 | -5.484 | -5.556 | -5.573 | -5.582 |
| Add 5mm | |||||
| 0 | 1 | 2 | 3 | 4 | |
| 0 | 0.185 | 0.076 | -0.07 | -0.185 | -0.272 |
| 1 | 0.019 | -0.048 | -0.172 | -0.252 | -0.328 |
| 2 | -0.165 | -0.213 | -0.308 | -0.356 | -0.405 |
| 3 | -0.318 | -0.349 | -0.432 | -0.457 | -0.495 |
| 4 | -0.449 | -0.484 | -0.556 | -0.573 | -0.582 |
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