Massive layer shift using infill for the first time with this .8mm nozzle
i doubt the nozzle would cause the layer shift - check belts, pulley idlers and such.
i suspect i had blobs of filament in the infill sections that the extruder kept ramming into which caused both X and Y axis to shift, i reduced layer height to .3mm left extrusion width at 1.2mm but reduced infill extrusion to .85mm so far im at the point where the print began to fail last time but everything still looks good, fingers crossed
cool
7mm so far, last time it started failing at 4mm, by the time it hit 7mm it was a massive failure so im gonna risk it and go to sleep, hoping to wake up to a decent print and not an epic failure
0.3mm layers is pretty thin for 1.2mm beads. 0.8mm layers is workable. A post retract wipe might help. Using or increasing Z hop might help. If the drivers aren’t at risk of overheating and motors aren’t hot you can adjust them for a little more current. You might look to see if there is excessive overlap between beads, slicers put in overlap between perimeters and outline and that can be a problem if the overlap number is too high.
0.8mm nozzle 1.2mm extrusion width. 0.85 infill extrusion. Layer height at .3mm. Seems like a pretty successful print
photo or it didnt happen! 
missing/deleted image from Google+
missing/deleted image from Google+
missing/deleted image from Google+
Makes it hard to take a picture because of the way it reflects light. So much different than the other half printed with the .4mm nozzle lol
Looks great so far.
Used a ton of PLA lol
If there are blobs of filament in the infill, your nozzle/heater block might be leaking.
The nozzle should be tight to the inner threaded barrel/throat.
The nozzle should NOT be tight/flush against the block!
If the nozzle hits those blobs, it would alter position.
The way you mention that 4mm high was a major shift, then again at 7mm. That would indicate potential pattern of blob left every so many minutes from leaky hotend.
Just a thought if belts and mechanics check out.
Yeup everything checks out. Weird
had that problem to after switching to 0.7mm nozzle, on 0.4 i never printed thet fast (or that big) turns out motor driver getting hot afer a while. that print looks like it realy has to run a lot. slow down or tune steperdrivers and/or cool steppers good luck and :
Welcome to the BIG BOYS (curently at 1.2mm nozzle 0.6mm layerheight)
Lol thanx. Biggest ive gone is .4mm layers but i can easily push this one to .7mm i have my .4mm nozzle printing .35mm layers
if your extruder keeps up… (or use sth like volcano heater)
I only run it at like 20mm/s lol