3D viewing and measurement
Open incoming STEP / IGES / STL files quickly and move through shape review, section checks and measurement in one interface.
Product Information
Basic product, platform, supported format and download information.
| Product Name | StepGeomChecker |
|---|---|
| License | Freeware |
| Platform | Windows 10 / 11 64-bit |
| Supported Formats | STEP / STP / IGES / IGS / STL |
| Category | Manufacturing Review / Measurement Tool |
| Version | 2.2.0 |
| Last Updated | 2026-04-28 |
| Official Download | Download StepGeomChecker |
| GitHub Download | Download from GitHub |
| Package | Official ZIP package delivered from the LWJ download page |
| File Size | 62MB |
What you can check
StepGeomChecker is intended for practical manufacturing review when a full CAD environment is not required for every user.
V2.2 hole checking
Check normal, counterbore and countersink holes in STEP / IGES models, compare detected counts with expected counts, review result lists, link to the 3D view and export to CSV.
Manufacturing review
Use it for incoming-data checks, pre-machining review, pre-quotation checks and shape sharing with suppliers.
Customizable workflow
LWJ can discuss feature additions and workflow-specific customization for manufacturing operations.
Requirements and usage notes
These notes prevent overclaiming and match the current software scope.
Required Environment
- OS: Windows 10 / 11 64-bit
- Architecture: x64
- Supported Formats: STEP / STP / IGES / IGS / STL
- License: Freeware
- Package: Official ZIP download from the LWJ website
Usage Notes
- Only one model can be displayed at a time.
- V2.2 hole checking is for STEP / IGES only.
- STL, threaded holes, tapped holes, slots and oval holes are not supported by the V2.2 hole-check function.
Screenshots
Main function screens for model inspection, measurement and manufacturing review.
FAQ
Common questions before downloading.
What is StepGeomChecker?
StepGeomChecker is a Windows 3D viewer and measurement tool for STEP, IGES and STL files. V2.2 adds normal, counterbore and countersink hole checks for STEP / IGES models.
Which file formats are supported?
The viewer supports STEP, STP, IGES, IGS and STL files. V2.2 hole checking is for STEP and IGES models only.
Is StepGeomChecker free?
The current public package is provided as freeware from the official LWJ download page. The package is for Windows 10 / 11 64-bit.