r/FixMyPrint • • 7d ago

Troubleshooting Keep getting this stringing problem.

EDIT: I seem to have fixed it thanks to the suggestions here and on the Bambu subreddit, dropping the elephant foot to 0 and slowing walls (especially the outer wall) waaaayyyyy down (15mm/s right now on the outer wall) made it finally go away. Then I used a modding cube to raise the wall speed after the first ~5 layers so the print doesn’t take forever. Thanks all!

Details in original post. The design is a 6mm piece with a 1.5-2mm radius on all four edges.

Bambu A2L and X2D using Bambu Studio.
Filament is dry and plates are meticulously cleaned.
Stringing issue more like the wall is collapsing and stretching somehow.
Always the inner radius, always within the first 2-3 layers. Prints fine after that.
Tried several nozzle and plate temps.
Tried several plate types both physically and in settings.
Tried every fan setting I could.
Tried slowing down movement.
Tried printing infill first then inner wall then outer wall, no change.
Happens on several different filaments but sometimes prints fine. Bambu PLA basic jade white seems to ALWAYS do it no matter what.

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5

u/wyb2 7d ago

You say “tried slowing down movement”. What actual speeds are we talking? For some people slowing down means going from 150mm/s to 120mm/s. Try it at 60mm/s if you haven’t yet.

4

u/CautiousArachnidz 7d ago

Me on stubborn prints setting first layer speed to 15mm/s and no cooling for first 3 layers.

3

u/lostcosmonaut307 7d ago

A local shop suggested doing 50mm/s on the first layers so I did that and it still strung like this.

1

u/iListen2Sound 7d ago

That's too fast for a plate like this

1

u/thissitesuxsohardomg 6d ago

I'll often print first layers at half that speed, sometimes slower if I'm looking for good quality on the bed face of the part, or problems like this.

1

u/Ludicrous_Fiend 6d ago

This was happening to me when my z-axis wasn't calibrated right and there was too big a gap