Product journal

On the Mac App Store

Development history and release notes.

Read about product changes, quality improvements, and known limitations in clear release notes.

Now shipping

Meshworthy is available on the Mac App Store. The entries below are the development history and free web-tool releases behind that build.

Development history

Development milestones.

Foundation

3D Print Clearance Test, generated in your browser

The third free Meshworthy web tool ships: a local clearance-test generator for calibrating the fit of round pins, square keys, dovetails, and magnet pockets. It creates a six-position test for FDM or resin, validates the generated geometry before download, and exports binary STL and standards-based 3MF without an account or model upload.

Open the 3D Print Clearance Test

Clearance generator

FDM and resin presets produce six ascending total-clearance positions; custom settings remain constrained by printable geometry and minimum wall-spacing rules.
Round-pin, square-key, and dovetail tests include a female plate and nominal male gauges; magnet-pocket tests generate a single pocket plate.
Every successful run provides an on-device 3D preview, a validated binary STL, a generic millimeter-based 3MF with named objects, and a printable or copyable test card.
Identical settings generate deterministic geometry, so a recorded fit can be tied to the exact printer, material, profile, process, and connector shape used for the test.

Validation and limits

Generation runs in a Web Worker on the device; settings and generated geometry are not uploaded or stored.
Downloads stay locked unless the output has finite coordinates, positive volume, valid bounds, and manifold topology with no boundary, non-manifold, or degenerate faces.
Clearance means the total size difference, not the gap on each side. A result is calibration evidence for the tested setup, not a universal tolerance recommendation for every printer or material.

Release

Meshworthy 1.0 on the Mac App Store

Meshworthy ships on the Mac App Store. The app is a free download for Apple silicon Macs: diagnosing a model, inspecting every defect in 3D, measuring, and exporting a clean copy cost nothing. Meshworthy Pro is a one-time unlock for repair, splitting, hollowing, orientation, and batch processing — never a subscription. Model processing stays local, with no account or upload.

View on the Mac App Store

Free

Explainable STL and mesh diagnosis with click-to-inspect navigation from a finding to its exact model location.
3MF color and material integrity checks, plus resin cavity and drain-path validation.
Measurement, shell isolation, unit display, and clean pass-through export.

Pro unlock

A one-time $19.99 purchase — never a subscription — unlocks repair, build-volume-aware splitting, printer-calibrated joinery, hollowing, orientation, and batch processing.
Purchases and restoration use the Apple ID tied to the App Store transaction; there is no separate license account.

Privacy

Model parsing, geometry operations, and export validation run locally on the Mac.
No Meshworthy account is required and models are never uploaded.

Foundation

STL Error Checker, free in your browser

The second free Meshworthy web tool ships: a read-only STL Error Checker that runs entirely in the browser with no model upload. It reads the mesh topology and separates print-blocking problems from advisory ones, using the same severity model as the Meshworthy Mac app, and shows an interactive 3D overlay that matches the native viewport.

STL Error Checker

Reads binary and ASCII STL by proving the structure, never trusting the extension, then recovers topology with a deterministic vertex weld.
Blocking checks: open boundary edges, non-manifold edges, orientation, and inward-facing closed shells. Advisory checks: degenerate faces, duplicate faces, self-intersections, contact risks, and isolated debris candidates.
Interactive viewport with a reference grid, grounded contact shadow, and per-issue overlays you can isolate and frame, plus a copyable local report and a shell table.
Eight benchmark fixtures with a documented, committed expected result let anyone see a known defect reported without a file of their own.

Privacy and safety

All parsing and analysis run in a Web Worker; no model, filename, or coordinate leaves the device.
Rejects corrupt triangle counts, non-finite coordinates, truncated data, and oversized meshes with named error codes before any analysis.
Verified by an expanded unit suite and a 5-browser end-to-end suite, including a no-request-body privacy check and accessibility checks.

Foundation

3MF Color Inspector, free in your browser

The first free Meshworthy web tool ships: a read-only 3MF Color Round-Trip Inspector that runs entirely in the browser with no model upload. It inspects package structure, color and materials, textures, transforms, and reference integrity; generates a deterministic standards-based reference file; and compares a color round trip against it.

3MF Color Inspector

Inspect mode: semantic inventory and reference-integrity checks for the documented 3MF subset, with named evidence and an on-device colored 3D preview (Rendered color, Object IDs, Property source).
Download mode: a deterministic, standards-based reference file (fixture catalog v1.0.0) with no vendor-private extensions.
Compare mode: value-based round-trip comparison, so resource-id renumbering never reads as loss while a changed per-triangle assignment always shows a semantic difference.

Privacy and safety

All parsing and analysis run in a Web Worker; no model, filename, or metadata leaves the device.
Hardened package opening rejects zip-slip, traversal, compression bombs, encrypted entries, and XML depth/entity attacks before decompression.
Verified by a 16-fixture security catalog (v1.0.0), 79 unit/integration tests, and a 5-browser end-to-end suite.

Foundation

Local processing foundation

The first product foundation includes private model handling, native geometry operations, precise inspection, and an application shell built for macOS.

Core

macOS application foundation with Apple-silicon support.
Local model processing with no account or geometry upload requirement.
STL, OBJ, PLY, and 3MF import foundations with defensive file parsing.

Inspection

Visual diagnostics for boundary, manifold, normal, shell, and geometry issues.
Click-to-inspect navigation from a finding to its exact model location.
Measurement, shell isolation, unit display, and clean pass-through export.

Reliability

Non-destructive model state with undo and redo foundations.
Recovery architecture for interrupted sessions and long-running operations.
One-time purchase infrastructure built around native store entitlements.

Next milestoneRepair verification, connector fit, and resin safety.

The next entry will be published after every verification gate has passed.

Release criteria

Requirements for each entry.

A feature belongs in the changelog only after its real outcome can be demonstrated and its limitations can be stated plainly.

01Verified

The exported result, not merely the operation, passes its checks.

02Measurable

Quality claims have a visible metric, test, or reproducible outcome.

03Recoverable

Long operations cancel honestly and user work survives interruption.

04Documented

Important limitations are published beside the improvement.

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Follow Meshworthy development.

Review completed milestones, current limitations, and the product workflows planned for the first public release.

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