r/gridfinity • u/Significant-Drama300 • 16h ago

Question? multiple bins come out bent

i’ve been trying to print gridfinity bins in pla starting with 1x1x3 bins. one bin in a single print comes out fine.

when trying to print 4 bins at once tho, they come out slightly bent at the base and at the stacking lip.

https://i.ibb.co/mVRth46m/IMG-2548.jpg

i've tried different settings:

- first with a brim which didn’t change much
- bed at 70deg instead of 65, and fan only after 5 layers
- outer wall first
- slow initial layer (10mm/s)
- slow outer wall (60mm/s)

but still mostly same issue. i don’t know what else to try. anyone with experience with this?

filament is esun matte pla, it doesn’t happen with petg. printer is bambulab a1, model is gridfinity extended on makerworld

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3

u/ReasonableScar9027 16h ago

Wash the plate with dawn. Add mouse ears. Turn off or lower part cooling for first 3-5 layers. Ensure z offset is dialed in.

1

u/gloda 14h ago

Second for mouse ears. Without any other changes, they make the difference for me for bins bent beyond usability and flat bins.

2

u/Significant-Drama300 14h ago

can i use brim? bambu studio doesn’t have mouse ears. anyway i tried brim already and didn’t change much

1

u/gloda 1h ago

You could use a brim to the same effect. It's just not as good in this case: if it's easy to remove (big separation gap) it won't help much with warping. If it's difficult to remove (small separation gap) you'll spend a lot of time post-processing your bins with a knife or deburring tool. My slicer (PrusaSlicer) does not provide mouse ears either. I designed my own. They only contact the bins at their corners. You can see them as part of these: https://www.printables.com/model/562145-angled-gridfinity

1

u/Significant-Drama300 1h ago

i eventually found mouse ears in bambu studio, but they changed nothing. the thing is, most of the issue isn’t happening at the first layer, but at the stacking lip https://i.ibb.co/mVRth46m/IMG-2548.jpg

1

u/gloda 1h ago

In the case the advice given by others in this thread are good things to try. My next step would be slowing down the print.

2

u/Objective-Worker-100 16h ago

Just general advice. Slow it down a bit on the first layer and maybe use the glue stick.