How should I adjust for this defect in PLA printing? At the corner on the left and the door on the right? Most of the building prints pretty well, but I get bad patches. There’s a lot of stringing across the inside but I can clear that out pretty easily. This is on a Flashforge Creator Pro. Approximately a year old spool of PLA as I’m getting started again after laying off it awhile. This is with the right side nozzle, away from the cooling fan, as the left has a bad jam that will require disassembly to clear.
Looks cool to me 
Perhaps that’s the 3D design issue?
Baking old filament at 220F for a couple hours is a quick way to rule out over-saturated filament. Also, to clean strings, a heat gun will soften hairlike strings to quickly remove unsightly portions. Sometimes they just shrivel and fall off. Go slowly- don’t melt or char the print
It looks like a feed issue at one corner, and at the insert area. I would lean towards your software is not calculating the correct feed, causing the print to fail at a particular area. If other smooth style objects print fine, try another similar rock face print to see if the problem persists. The overhang areas along the rock surface seem to be a problem through the model.
You could try rotating the print 45 degrees… see what happens.
@Keith_Applegarth hello
if you can switch to ABS-R and your prints will be much more consistant. only requirements are to increase your extruder temps to 250C. ABS-R has far less warping and much better adhesion between layers.
Share stl
If you are uisng one of tohse fancy wood like filaments they may jam the printheadociasionally make sure the spool is rolling nicely, I had similar problem - turned out the spool was having too much friction on the way to the head, so I added PTFE tubing to guide it in.
If you are usingwood filled filament if you go too hot it will clog, if you go too slow it will clog aswell. It is recomended to have bigger diameter nozzle for those -since they contain random sizes or wood powder
I don’t believe this is from saturated filament; if it were then why would the artifacts only show up in a couple consistent parts at each layer?
that’s the closest here that I’m holding on to. there is something special about that corner and the door.
I suspect your zseam is near the corner symptoms and that retraction was used for details at the door?
the assumptions appear to show an under extruded trace followed by a small blob perhaps containing the total material missing in the prior trace.
the oddest part, to me, is that there is a form of ringing to this under extrusion/blob pattern.
I would approach this as a retraction issue: try disabling retraction and see how the symptoms differ. then try setting far more aggressive retraction settings and see how the symptoms differ again. if this is related to retraction you should see symptoms change significantly; if the symptoms don’t change then you’ve ruled out retraction at least.
as +Keith Applegarth suggested: you can try rotating the print by 45 degrees to see if that works around the fundamental issue. that’s with a shot if you’re more interested in getting a good point today than in diagnosing the underlying issue.
Thanks guys. It was over-retraction from an overzealous effort to combat stringing. I’m now pretty well dialled in. Here’s the Tikal temple from Thingiverse, printed over the last couple weeks out on my spray priming table. missing/deleted image from Google+
It gave it a specific texture cool