Print nozzle colliding with print after an 1/2 hour or so of printing

Comgrow T500
1

so I’m using comgrow t500 with a .06 nozzle, a initial height setting of .07 and a layer height of .3 mm. I’m using orca slicer v2.3.0
It doesn’t matter what filament type I use after 1/2 an hour to maybe an hour of printing the nozzle begins to collide with the printed material and if left alone will destroy the print.
I have to manually increase the Z setting to be able to complete the print.
I normally do a full prep before printing- cleaning bed, setting height and leveling

any suggestions what might be causing this?

thanks

2

Sounds like your printing with the default infill…Grid.
Grid should not really be used a lot of users want it removed from the slicers.
Try Gyroid or Adaptive Cubic.

3

+1 on trying other infill patterns.

The other thing that could be at play is shrinkage causing a corner of the model to raise up. Mostly happens with a sharp corner between flat planes. Once the print is > 50mm tall the model can warp without pulling off the plate.

Do your collisions happen over the infill or at a corner?

4

Gyroid is an excellent infill, but the problem is that your printer must be very very stable, as this infill generates a lot of vibrations.

That’s why I prefer to use honeycomb, even though it’s not as strong as gyroid.