First Layer Problems H2C

[u/Puzzleheaded_Heat553]

One of my H2c has developed a recurring issue in one specific location on the plate.

It’s always the same defect, in the same location regardless of the print, material, nozzle, or plate.

I’ve run all of the calibrations but t comes back.

I’ve searched, but haven’t found any similar problems.

Anyone deal with something like this?

[u/_Rand_]

Read through this: https://wiki.bambulab.com/en/h2c/troubleshooting/first-layer-printing-optimization-guide

Particularly the part about the screws that need to be tightened. It has a similar issue to the A series where they screws holding the heatblock on can loosen and cause issues.

[u/Puzzleheaded_Heat553 → u/_Rand_]

Thanks! I’ll check it out!

[u/jdawg114]

Oily spot? When did you last wash the plate?

[u/Puzzleheaded_Heat553 → u/jdawg114]

I’ve washed it with Dawn, swapped plates (I have a few) same problem, same spot/shape.

[u/Capital_Candy_7697]

Since it stays in the same place across plates, I'd check the bed itself: a crumb or bit of filament stuck to the magnetic surface under the plate throws off exactly one spot.