SUP W/ THIS!?: Odd “ripple”…
Same thing on two printers (same make/model). In the slice, but not showing in the visualization? FYI, ripple is motion side to side. After several aborts, decided to let print go; still going… ripple no more at higher layers. Hm?
Surely, somebody has seen this oddity and can fill me in. TIA…
Looks like your nozzle is too far from the bed and you are over extruding?
Is the nozzle moving in a straight line, but you’re getting squiggles anyway?
Looks like a combination of the nozzle being too high off the platform, plus over extrusion.
Thx guys. Funny thing is it printed a quite decent 3DBenchy. And, after the ripples, I recalibrated for good measure. The nozzle shouldn’t be too high, and it shouldn’t be over extruding. I even nudged the nozzle down during printing, thinking it was too high, but the ripples persisted. And, as mentioned, it happened on two printers. Now, I know what looks right, and what looks wrong when calibrating, and this just looks “different” than “too high/over extruding”, but I could be wrong, I guess.
The filament is at the end of a spool. Perhaps somebody respooled some other filament that likes a different temp. That could lead to an extrusion rate issue, I guess.
I’ve seen this oddity before here, though, w/ known “good” filament (i.e. manufacturer recommended).
If the nozzle is not too high…perhaps it is too low to print the straight lines and the squiggle is the perimiter joining of the 2nd layer? Otherwise…where are the board squish and the other lines?
Thx, @NathanielStenzel .
So, I calibrated it as usual. And, as mentioned, when it was “misbehaving” I nudged it down. I did this progressively - observing after each nudge. Too high, and filament drops, then fails to adhere, and contracts, leaving a distorted path. Too low, and the line is very “flat”, as it’s mashed into the bed. The ripple seems like something altogether different.
FYI, as I let the print go, it is now looking OK. This could indicate a first layer issue, but again, it’s different, plus it’s on two printers that printed 3DBenchy fine just before the problem. Hm?
@Swami_Human the first layer should be pretty flat. It should be about half the thickness of the other layers as far as I am concerned. It is bed squish. It results in some trimming later, but I prefer that over parts coming loose from the bed. If the part partially detaches from the bed, you get warped parts.
Just to be sure, is your object placed on (not below or suspended above) the bed with support material turned on?
AH!, it is in fact ABOVE.
And yes, the grey in the posted image represents the supports.
Then you have zigzag support material. Okay. That explains it then.
FYI, I’ve “suspended” before and don’t recall the ripples. So, what is the connection?
Thx. But the ripple is on the skirt, too. Where’s the connection there then?
It is interesting how some of you provide such lovely puzzles to figure out. I like a good logic puzzle from time to time.
Thx 
I like puzzles, too. But, is this one truly solved? Again, much of the ripple stuff is not near the support stuff. I guess I could reslice it w/ the model flush to the bed and see if the ripples are gone…
Well, you can always let it run a bit, see if you get good bed adhesion and if it gets up to the actual item and prints it okay.
And, the supports do not start until after the first layer. In fact, as sliced, until after the 3rd layer.
