Layer shifting on 24v V3B M2

[brolly759]

Hi there, I have a printer about 2-3 months old. I am having this really strange problem where I am getting a layer shift and it continues that layer shift... eventually making another layer shift... It looks like its shifting on both the X and Y axis. I am printing a clipboard around 9-10 inches in length and 6.5" in width, so I have it printing diagonally on the print bed from corner to corner, ABS, ABS slurry for the base to keep it from warping. 235C nozzle, 110C first 5 layers, after that goes to 90C, In an enclosure, I have the print speed to 4800 in Simplify3D. No supports, Raft is on for support because this is a long skinny structure. Belts seem fine and tight.

Any help would be appreciated. This clipboard at 100 Micron takes roughly 32 hours with 30% infill. I attached the photos

[jimc]

shifting problems come up all the time. here are a couple threads to read over


viewtopic.php?f=7&t=1898&hilit=+shift

viewtopic.php?f=7&t=2105&hilit=+shift