Unscored teaching sample

See what a Print Score report can—and cannot—say.

This page has no source STL or 3MF. It therefore shows no invented score, dimensions, topology counts, mass, failure probability, material choice, or price.

Report structure

What the real workflow returns

The report separates literal mesh observations from decisions that need other evidence.

Five-check mesh rubricOpen boundaries, non-manifold edges, winding conflicts, negative signed volume, and degenerate faces where those checks complete. The score is not a print-success probability.
Geometry referencesCurrent-orientation bounds, triangle count, triangle-mesh surface area, and a closed solid-volume reference when available. STL units still need confirmation.
Slicer handoffPrompts to verify the exact machine profile, scale, orientation, walls, supports, tolerances, toolpaths, time, and material usage.
Production boundaryNo automatic material selection, printed-mass estimate, failure probability, machine time, or customer price is calculated from the mesh.
How to read a finding

A count identifies where to inspect—not why it happened.

Open-boundary checkValue comes from the uploaded mesh

Zero detected open edges does not by itself prove a watertight, printable solid. A nonzero count still needs location and toolpath inspection.

Non-manifold checkValue comes from the uploaded mesh

The count does not identify whether the geometry is intentional or whether the selected slicer resolves it acceptably.

Down-facing triangle areaOrientation reference only

The fraction is not support volume or a statement that the faces require support. Evaluate supports in the intended slicer and profile.

Near-bed vertex shareSampling ratio only

This vertex-occurrence ratio is not physical bed-contact area or an adhesion prediction.

Pricing boundary

No mesh-only quote.

A production price needs the exact slicer job's material usage and time plus measured setup, labor, machine cost, overhead, failure allowance, and margin. This sample invents none of them.

Source Check boundary

A source URL creates questions, not proof.

Source Check reads the submitted address and recognized URL pattern only. It does not open or inspect the remote page or its contents, and it cannot verify authorship, ownership, license permission, marketplace eligibility, or current page terms.

Downloadable geometry exercise

Same size. One missing triangle. A different next step.

Compare two synthetic STL fixtures before using a personal file. Both have a 10 × 10 × 10 envelope when their coordinates are read as millimeters. One has a triangular opening that its dimensions alone do not reveal.

Wireframes projected from the two STL files, viewed from below. Three edges around the missing triangle are highlighted on the right.
Drawn from the downloadable triangle coordinates. Highlighted edges occur in only one triangle; they are the boundary of the opening.

Closed cube

12 triangles · 0 boundary edges

The triangle shell closes. Continue with units, intended use, and slicer checks; closed geometry alone does not establish a successful print.

Download closed STL

Cube with one triangle missing

11 triangles · 3 boundary edges

Inspect whether the opening is intentional before using a volume reference. If it is unintended, repair it, recheck the exact exported file, and validate the result in the target slicer.

Download open STL
Where the numbers come from

These repository test fixtures were checked on September 13, 2026. The exercise counts identical triangle-edge endpoints and measures coordinate bounds. STL files do not declare units; millimeters are an explicit assumption here.

This is a reproducible geometry lesson, not a Print Score report or a physical printing test. It is separate from the unscored report-structure sample and the gallery's teaching illustrations.

Download measurements, method, and file hashes

Try the check: download either file, open Check File, sign in, and select that STL. Compare the finding with this exercise. The report is saved in your account.

Use a real file for a real report.

Upload your STL or supported 3MF to generate file-linked mesh measurements. Then validate the exact production job in your slicer.

Check a File