Print Orientation
Optimizer
The same part can need heavy support printed one way and almost none printed another. This tool tries every stable way to sit your part on the bed, ranks them, and hands you the STL already rotated into the best one.
Free for files up to 25 MB, no signup. Files are deleted automatically within 24 hours.
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Why Orientation Matters
Support material costs filament, print time, and surface quality where it touches. Sitting the part down differently is free.
Less support material
Support is filament you pay for, wait for, and then throw away. Orientation is the one free lever that reduces it.
Every resting face tried
The six axis directions plus every flat face of the convex hull, meaning every way the part can physically sit on the bed.
Ranked, not just picked
The full ranking streams to the console: unsupported area, bed contact, and height for each candidate, so you can overrule the winner.
Bed adhesion counted
Between two support-free orientations, the one with more surface on the bed wins. Contact area is what keeps a tall print from popping off.
A file, not just advice
You download the STL already rotated into the recommended orientation and resting on the bed, ready to drop into the slicer.
Your support angle
45° is the default FDM limit. Tune it to your printer and the ranking recalculates around what yours can actually bridge.
How It Works
Enumerate
The candidates are the six axis directions plus the flat faces of the convex hull: every plane the part can stably rest on, up to about thirty orientations.
Score
For each candidate the part is set on the bed and measured: area steeper than your support angle, area touching the bed, and standing height.
Deliver
Candidates are ranked (least support, then most contact, then shortest) and the winner is applied. You download the rotated STL and can read the full ranking in the console.
Where the heuristic stops
This is a geometric search, not a slicer. It measures which faces would need support, but it does not generate supports, simulate bridging, or estimate how much support volume the slicer will actually build underneath.
It also does not know what your part is for. Layer lines are the weak direction in FDM, and if the part carries load, strength can be worth more than saved support. The console ranking exists exactly so you can make that call.
Curved bottoms are set down at their tangent point, which gives near-zero bed contact. That is honest (a sphere really does touch the bed at one point) but it means organic shapes usually still want a brim, a raft, or the slicer's own judgement.