How to hide the seam on curved and organic 3D prints in Bambu Studio
Every layer starts and ends somewhere, and on curved figures those points line up into a visible zipper. For organic shapes, set Seam position to Back and turn on the scarf seam for outer walls (Process → Quality), so the seam sits where nobody looks and blends in. For straight-walled parts like plaques and boxes, use Aligned so the seam is one clean line on a corner.
Why it happens
Each loop of the outer wall has a start and an end, and a tiny bump or gap where they meet. Bambu Studio's default often places it where the shape makes it easiest, which on a figure can be the face or the chest.
A scarf seam ramps the start and end of the loop over a short distance instead of meeting at one point, so the join is spread out and much harder to see on curved walls.
The settings in Bambu Studio
- Seam position
seam_positionProcess → Quality → SeamBack for curved and organic models; Aligned for straight-walled and flat parts. - Scarf joint seam
seam_slope_typeProcess → Quality → SeamOn for the outer walls (Contour, "external") on curved and organic models.
Names are from Bambu Studio 2.x. The settings search box finds either the name or the key.
Good to know
- Scarf seams are a newer Bambu Studio feature. Check the seam in Preview after slicing: it shows exactly where each layer starts.
- On Quality, Plateright also uses 3 walls on curved models, so the infill pattern cannot shadow through thin curved surfaces.
What Plateright checks
The report classifies every object (flat plaque, organic figure, print-in-place, small detailed part…) and chooses Back plus scarf, or Aligned, per object, not one setting for the whole plate.
Questions
Which seam position is best: Back, Aligned, Nearest or Random?
Back for figures and curved models, so the seam hides on the back. Aligned for straight-walled parts, where a single straight line on a corner is the least visible. Random scatters the seam as small dots, which can look rougher on smooth surfaces.
What is a scarf seam?
A scarf (or scarf joint) seam overlaps the start and end of each outer loop on a gentle slope instead of butting them together at one point. The join is spread out, so it is much less visible on curves.
Can I pick the seam per object?
Yes. In Bambu Studio, switch Process to Objects (or right-click an object and add settings) to give each object its own seam. The tuned file from Plateright Pro does this for you.
Related fixes
Updated September 28, 2026.