My K8800 prints pretty reliably anything smaller than 150mm in extent. Now I am try to print a flat board (prototype of a PCB), about 1.6 mm thick, on top of a raft. The extents are large but still within the maximum (183 x 88.5 x 1.6mm). The part is sliced using Cura 4.9.1. The same part divided into two halves prints fine, although with an odd scrape at one point.
When I try to print the full part, it gets to a certain point in the build, then the printer pulls itself to pieces. It seems that the print head catches on the part, and although normally it would recover from that, because it is at its maximum extent, it pulls the magnets apart.
I have tried:
- tightening the belts
- tightening the rods (then loosening very slightly)
- relubricating the rods (two drops only)
- checking the magnets
- switching to Marlin 2.0.x firmware (which did help some)
Still no print.
Can anyone help here please?