ForgeShape: 3D Print Repair

Name: ForgeShape: 3D Print Repair
Author: Shanghai Fuwei Information Technology Co., Ltd.

By: Shanghai Fuwei Information Technology Co., Ltd. App

STL, STEP Check & Converter

Overview

Apple Apps Store

Version:

26.09.22

Last updated: 2026-09-21

Ranking

#1,474,204 ▼ 10,882

Overall

Features & Capabilities

Print failed, can't tell why or what to fix? ForgeShape finds open edges, bad normals and thin walls before slicing, then exports STL/3MF — all on device.

A print fails and the model still looks fine on screen. ForgeShape opens STL, STEP, IGES, OBJ, GLB and 3MF models on your device, finds what blocks printing — open edges, wrong normals, thin walls, overhangs — repairs it, and exports STL or 3MF for your slicer. It also converts between CAD and mesh formats. Nothing is ever uploaded.

Key features:

Import STEP (.step/.stp), IGES (.iges/.igs), STL, OBJ, binary GLB and 3MF models, all parsed on device
Automatic detection: open edges, non-manifold edges, self-intersection (up to 500k triangles), surface orientation, duplicate faces, degenerate triangles, wall thickness, overhang, units and size
Each body is classified as a solid candidate or an open shell; closed manifold models report a measured volume
Guided repairs: weld and stitch boundaries, fix surface orientation, remove duplicate faces, fill small holes, remove degenerate triangles, or run them all in sequence
Repairs apply in one step, then show before/after; deep repair previews, escalates tolerance until the model closes and reports how far geometry moved
Pick a finding to highlight the affected edges and faces, or let the camera turn to frame it on the far side of the model
Inspect it your way: shaded, wireframe or both, Y-up and Z-up conventions, focus on any surface point, and level of detail that keeps large meshes responsive
Select a face to measure planar width, height and area, or cylinder radius, in source units
Fit the model to a print-size profile with one uniform scale, then recheck automatically
Three jobs: print to STL or 3MF; convert to OBJ, GLB, STL, 3MF or faceted STEP; Reverse to CAD to STEP
Source colors are read and shown: OBJ materials, 3MF color groups and baked textures, GLB base colors; on export only GLB carries color
Reverse to CAD for meshes: planar, cylindrical, conical and spherical faces become analytic STEP geometry; precise CAD sources are not reversed
Honest reports: every check names its mesh-snapshot evidence and lists what remains unresolved
Export the check as a PDF, HTML or JSON report in four languages, with marked-up model figures and close-ups of located findings

For 3D-printing users, engineers converting between STEP/IGES and mesh formats, makers fixing scanned or downloaded models, and teams delivering in multiple formats.

Common questions:

Is ForgeShape a slicer? No. It handles the step before slicing — checking and repairing the model — and does not generate G-code.
Can it repair every broken model? No. Issues beyond the supported scope — non-manifold edges, large openings — are labelled as not automatically repairable. Deep repair closes more models, but states how much the shape changed.
Does Reverse to CAD recover the full design? Unrecognized regions stay mesh; the STEP has no feature history and is not guaranteed machinable.
Are models uploaded to a server? Never. Import, checking, repair, measurement and export all happen on device. No account, no cloud, and you choose where files are saved.

Pricing & Access

Free: import and view every format, run every check, apply every repair, read every finding, and export the report.
Pro subscription: export and save your model — repaired, converted or reversed to CAD. Weekly, monthly or annual, active on Mac, iPhone, iPad and Vision Pro with the same Apple Account.
Payment is charged to your App Store account. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the current period ends.
Manage or cancel subscriptions in your App Store account settings.

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