Seam position settings that actually help
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Set seams to Aligned for functional parts, and paint them manually on anything visible. Random scatters the problem instead of solving it, and Rear only works if the model has a defined back.
Every perimeter has to start and stop somewhere, and that point leaves a small mark. You cannot eliminate it. You can choose where it goes.
| Property | Value |
|---|---|
| Aligned | one vertical line, tidy but visible on smooth curves |
| Nearest | shortest travel, produces a wandering line |
| Random | scattered marks, no line, but marks everywhere |
| Rear | all seams at the back, only useful with a defined back |
| Painted | you choose per model, best result, costs a minute |
Fix the blob before moving the seam
If your seam is a row of blobs rather than a faint line, moving it just relocates the blobs. Calibrate pressure advance and enable wipe on loop end first. Once the seam is a clean line, then decide where to put it.
A visible line or row of bumps running up the print
Perimeter start and stop points stacked vertically
- Calibrate pressure advance so the start and stop are clean.
- Enable wipe at the end of the loop.
- Set seam position to Aligned.
- For visible parts, use the seam painting tool and place the line on an internal corner or a hidden face.
- On cylinders, consider a spiral or vase mode if the geometry allows it — no seam at all.
Painting is faster than it sounds
Open the paint seam tool, click a vertical strip on the least visible face, slice. On a model you will print more than once that minute pays for itself immediately, and the result beats every automatic mode.
Scarf joints
Newer slicer versions offer a scarf or staggered seam that ramps the start and end over a distance instead of stopping abruptly. On curved surfaces this is close to invisible. If your slicer has it, it is worth trying before painting.
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