STL Analyzer & Print Cost Calculator

Before a file goes to the slicer or to a print service, four questions decide whether it is worth printing at all: how big is it, how much material will it take, what will that cost, and will the slicer accept it. This analyzer answers all four from the STL alone. The mesh is read once on our server, measured, and discarded; nothing is repaired or reduced, so the numbers describe your file exactly as it is.

Geometry comes from the triangles themselves: bounding-box dimensions, volume as the signed sum of tetrahedra (exact for a closed mesh, flagged as approximate for an open one), surface area, triangle count, the number of separate bodies in the file, whether every edge is shared by exactly two triangles, and how many open edges there are if not. Those last two are the checks Bambu Studio, Cura and PrusaSlicer run before slicing; a file that fails them here will fail there.

Material, cost and time are computed in your browser from settings you can change: material and density (PLA 1.24 g/cm³, PETG 1.27, ABS 1.04, ASA 1.07, TPU 1.21, nylon 1.14, standard resin 1.12), price per kilogram, infill percentage, wall count and layer height. The weight model treats the walls as a shell of perimeters over the surface and the interior at the chosen infill, which is how a slicer allocates material too; resin is counted solid. Time is a rough figure from extruded volume at a nominal flow plus a per-layer overhead, and is meant for quoting and sizing, not for scheduling: your slicer's estimate with your profile is the one to trust.

When the numbers say the file needs work, the report links to the fix: not watertight goes to STL Repair, which closes holes and separates non-manifold edges; over a million triangles goes to the STL Compressor, which brings the file under a size target without visible loss. Both keep the shape you measured here.