Locate geometric changes
Sampled surface distances in both directions, change regions and face references help you find where to inspect. A 3D part view provides visual context.
STEP REVISION REVIEW · PREVIEW
See what changed.
Know where to look.
Compare two STEP revisions, locate geometric changes and inspect supported dimensions and tolerances. Bring findings, source references and unresolved items together in one readable report.
This public website opens saved examples and reports. New STEP calculations require the PartDatum application or an invited web session; the calculation service is not connected to this website.
What you can review today
Available in the current preview application. Each result distinguishes observed findings from incomplete or unresolved analysis.
Review parts and assemblies
Compare single-part and multi-body revisions. Inspect candidate body matches, placement differences and unmatched bodies without hiding ambiguity.
Inspect supported PMI values
Read supported dimensions, tolerance values, datum references and source-face associations. Review changed values; unread values remain unresolved.
Share findings with context
Bring geometry, model-health observations and available source validation declarations into a review. Export a standalone HTML report and retain detailed records.
Two revisions. One review.
In the PartDatum application or invited web session:
- 01
Choose the two STEP files
Select the previous and revised model in their intended coordinate system.
- 02
Read the findings
Inspect observed changes and see which analyses completed.
- 03
Go to the changed region
Use the part view and face references to investigate the affected area.
- 04
Save the report
Share a readable HTML file with findings, source references and scope.
See how a saved measurement reads
Open a synthetic box shifted by 0.05 mm. Inspect recorded distances, rotate the measured points and export a readable report. This is a saved observation, not a new calculation or a claim about your model.
On the next page, choose “Open synthetic example · 0.05 mm shift”.
Clear scope for engineering review
PartDatum is a preview inspection tool. Findings support an engineer’s review; they do not certify conformity.
- Distances are sampled BRep observations, not certified Hausdorff bounds. No observed difference does not establish identical geometry.
- The display mesh provides visual context only. Measurements use the geometry kernel.
- PMI support covers readable source values and explicit associations; full semantic GD&T validation is not available. Missing declarations and unread values are not passes.
- Body and face associations carry their stated evidence. Ambiguous matches remain unresolved; file hashes identify bytes, not authenticity.
- Alignment must be intentional. There is no automatic conformity decision, model repair or inspection-program approval.
Bring a revision question.
Contact PartDatum to arrange a demonstration and discuss the files and review scope you need.
contact@partdatum.com