REVOPOINT / How-to & tips
A 3D scanner can help you reproduce an ornament, capture a curved housing or build a reference for a replacement part. Getting a usable print, however, takes more than scanning and exporting an STL. Each stage needs a quick check before you move on.
Start with realistic expectations: an optical scanner records visible surfaces, not hidden internal geometry. Deep recesses and the underside need suitable access and extra views. The resulting mesh describes the captured shape; it does not automatically become an editable CAD model with dimensions, sketches and design features.
- 01 Prepare
- 02 Capture
- 03 Clean & align
- 04 Validate
- 05 Test print
1. Set the goal and prepare the surface
Decide what matters before scanning: overall appearance, fine surface detail or the fit of a particular connection. Measure critical features on the original with suitable measuring tools and keep those measurements beside the project. A decorative replica and a mating component need different checks.
Clean loose dirt, secure the object and use steady lighting. Reflective, transparent or very dark surfaces may need a compatible scanning mode or surface treatment. If using scanning spray, check its instructions and suitability for the object first. Follow the scanner's calibration guidance, and choose detail settings that suit the features you actually need.
2. Capture overlapping views, not just a quick lap

Move steadily and keep recognisable areas shared between successive views. Watch the live coverage rather than judging progress by time spent scanning. If tracking is lost, return to a clearly captured area before continuing; adding misaligned data creates more work later.
Inspect the top, sides, underside and recesses. Reposition the object for additional passes where needed, preserving enough common geometry for alignment. Use markers where appropriate for the scanner, mode and object. A smooth or repetitive shape may be difficult to track from shape alone. No amount of extra scanning can reveal a surface the scanner cannot see.
3. Clean and align before building the final mesh
Save the raw project before editing. Remove captured table areas, supports and isolated noise without cutting away genuine edges. Align separate passes using their shared features or markers, then inspect the joins from several angles. Doubled edges or overlapping shells can indicate alignment trouble.
Combine the useful data and generate the mesh. Apply smoothing and simplification cautiously: a cleaner-looking surface is not necessarily a more faithful one. Preserve holes, lips and mating faces that matter to the job. For a functional redesign, use the scan as a reference and rebuild the required features in suitable CAD software rather than treating the raw mesh as finished engineering geometry.
Simplifying is not the same as smoothing. Simplification reduces mesh data to make a lighter file; smoothing changes local surface variation. Neither measures missing geometry. Keep a detailed master and make a separate delivery copy. After reducing it, compare thin walls, small holes, sharp edges and mating surfaces with the master, then repeat your important dimensional checks. Open the actual exported copy in the receiving program before handing it over. Smaller file size is useful only if the result still serves the job. For Revo Scan 6, consult the Mesh Simplify reference for the installed workflow.
4. Validate the mesh and check scale

Inspect for unintended openings, disconnected fragments, self-intersections, inconsistent face directions and non-manifold edges. Repair only what you understand. Filling an unscanned recess invents a surface; it does not recover the original geometry. Keep intentional openings and check the model again after automated repair.
Accuracy and resolution are different. Accuracy concerns closeness to the real dimensions; resolution concerns the detail sampled. A dense, detailed mesh can still have dimensional errors. Export the model, confirm the import units and compare overall dimensions and critical features against your recorded measurements. A watertight STL defines a closed volume, but it does not guarantee dimensional fit or printability.
5. Slice, print a small test and assess the result
Open the exported file in your slicer and check its size, orientation, thin features and support requirements. Review the layer preview for missing walls or unexpected filled areas before starting a print. Select material and settings for the intended use, not just the appearance of the preview.
Where fit matters, print a small section containing the connection or mating surface first. Measure it and test the fit gently before committing to the full model. Printer behaviour, material shrinkage and orientation can all affect the result. Record adjustments so the next attempt is repeatable. A successful fit test does not establish strength, durability or suitability for a safety-critical application.
Plan your REVOPOINT scan-to-print setup
Choosing a scanner? Read our Revopoint workflow and buying guide, then compare the POP 4, MetroY Ultra and MIRACO Plus against your object, working environment and required detail. The best starting point is a clear task and a checked workflow, not a promise that every scan will print perfectly.
Compare REVOPOINT 3D scannersImages supplied by Revopoint and reproduced with permission. Back to Guides & News

