So… is this the dreaded backlash on this top surface infill? ABS, 1.75mm bowden w/ EZ struder, seem to have gotten retraction and temp issues licked well enough to now deal with this.
Only alternative I can think of is under-extrusion?
Yep! That’s backlash. Look at the orientation its in, that will give you the hint as to which axis its on.
rubber bands on the arms might help? Or am I going to have to overhaul and use magnetic ball linkages…
or “underclock” your nozzle. if it’s a 0.45, tell slic3r it’s a 0.35.
Wait…it not connecting the inner pattern to the parameter can be backlash too?
Looks like the nozzle size doesn’t match the wall thickness.
But the nozzle size does not have to match wall thickness.
@NathanielStenzel , yeah - infill not touching walls, and oval circles are the leading signs of backlash.
@ThantiK ah. I could not tell there were oval circles in that. My newb eyes are nowhere near as good as yours.
Paging @Matt_Kraemer1
This familiar?
Wasn’t loose belts - had two carriages a bit loose, one with the side bearings, the other with the back one. E3D nozzle install in progress, I’m sure it’ll be great afterwards!
This looks a shrinkage issue to me. The shorter diagonals connect just fine, but the longer diagonals, which will shrink more, don’t connect. Hence it seems as the plastic cools, it shrinks on the longer diagonals more and pulls away from nominal.
It is backlash however. I cannot tell you where it comes from, as it can have multiple causes including lose pulleys on motors, play in bearings and a few other things. But it’s clearly a backlash issue.
2 ways to see, the infill does not connect to the outside depending on the direction that the outside is put down. And the top infill of the right part shows striping every odd line that is a clear sign of backlash.
Also remember, belt connectors, etc can be the source of this. I’ve seen plenty of people with correct belt tension, but their belt was slipping in the holder itself, or the holder was slipping, or the hot end wasn’t secured rigidly enough and it was wobbling back and forth.