3D Scanning Spray Guide: Sublimating vs Semi-Permanent
Quick answer: Optical scanners can struggle with glossy, transparent, and very dark surfaces. A fine matte coating can improve surface visibility, but the right formulation depends on scan duration, dimensional tolerance, material compatibility, and cleanup requirements.
What does scanning spray do?
Scanning spray creates a more uniform matte finish so projected light or laser lines can be detected. It does not repair poor calibration, missing viewpoints, or tracking errors. Use only as much coating as required to get stable data.
Sublimating or semi-permanent?
A sublimating coating is designed to disappear after the job; a semi-permanent coating remains until removed. The latter can be preferable for long inspection windows or repeat scans when cleaning is acceptable.
Choose the ATTBLIME working window
AB2 provides a shorter usable scanning window, approximately 1–2 hours, with typical sublimation in 2–4 hours. AB6 is suited to longer sessions, with about 2–6 hours of usable scanning and commonly 6–10 hours before disappearance. ABP is a semi-permanent option. Environmental conditions and coating thickness affect results.
Think about coating thickness
A sprayed film adds material to the surface. This is usually small but must be considered for tight-tolerance metrology. Manufacturer technical data sheets provide formulation-specific figures; application technique can change the real layer.
Apply and verify
Test material compatibility, follow the specific product instructions and safety data sheet, apply a light even film, and verify the surface captures correctly before coating the entire part. Never assume every spray uses the same distance or drying time.
Related 3D scanning guides
For your actual job, compare ATTBLIME working and sublimation times, the application checklist, and spraying before or after reference markers. These articles cover the next steps in the same workflow.
Frequently asked questions
Is scanning spray necessary for every part?
No. Scan an uncoated sample first when the scanner can capture the material reliably.
Does every ATTBLIME spray disappear on its own?
No. ABP is semi-permanent and needs removal if a clean surface is required.
Further reading and supplies: Compare ATTBLIME scanning sprays. Check the current equipment manual and product technical documentation for your specific setup.
How we select and verify technical sources ↗
Technical guidance is general. Check your scanner documentation and the relevant manufacturer's current technical and safety data sheets before applying products to sensitive parts.
