Printing a logo: what STL export really means
STL is geometry-only: triangles, no color, no units. How to prepare an extruded logo for a slicer — depth, bevels, thin walls and bed orientation.
STL is deliberately minimal
An STL file is a bag of triangles with per-face normals. No color, no material, no scale metadata — the slicer assumes millimeters by convention, not by spec. That minimalism is precisely why every slicer on earth reads it.
For a logo, this means color lives in the filament, not the file. The preview material you see in the editor is for judging shape; the print will be monochrome unless you print multi-color.
Preparing the mark
Prints hate hairline detail. Strokes thinner than about 1 mm at target size will print brittle or not at all — thicken them in the source SVG before extruding. Depth of 3–5 units with bevel on prints well: the bevel gives each layer something to bridge, improving surface quality on the visible faces.
Flat-backed extrusions are the friendly case: orient the flat back onto the build plate and no supports are needed.
Sanity-check before slicing
Drop the exported STL into the on-site STL viewer first. It renders immediately in the browser, so a broken export (missing faces, wrong scale) shows up before you spend filament. The viewer shows triangle count and bounding box — useful numbers when estimating print time.
Beyond single color
For multi-color signage, export OBJ instead: it keeps regions as separate geometry you can assign different filaments or paints to. For display pieces, resin printers reproduce fine bevels better than FDM.