Question 1

What should I upload for an SLA/DLP quote?

Accepted Answer

Upload 3D CAD (STEP preferred) and any drawings defining CTQs (datums, fits, hole requirements, sealing faces), cosmetic faces + allowed witness zones, finish class (presentation/paint-ready), target quantity, and any requirements for post-processing, inserts, or inspection documentation.

Question 2

How do you control surface quality and support marks?

Accepted Answer

We plan orientation and support placement around cosmetic faces and define witness zones. Post-processing is program-defined (support removal + surface prep, and optional priming/paint-ready prep) to match the finish class.

Question 3

Do resin parts shrink or move after printing?

Accepted Answer

They can. Wash and UV post-cure affect stability. We use controlled wash/post-cure cycles and handling discipline to reduce dimensional drift and improve repeatability for batch programs.

Question 4

Can you hit tight fits and hole tolerances with SLA/DLP?

Accepted Answer

Critical fits often require secondary ops. We plan a tolerance strategy and then drill/ream CTQ holes or lightly machine datums when repeatable assembly alignment is required. Use our ***ISO 2768 chart***(/resources/charts/iso-2768-tolerance-chart) and ***tap drill calculator***(/resources/tools/drill-tap-chart) when specifying mating features.

Question 5

Do you support finishing and paint-ready parts?

Accepted Answer

Yes. We support controlled surface prep, priming, and paint-ready programs based on your finish class and cosmetic requirements.

Question 6

What drives cost in SLA/DLP printing?

Accepted Answer

Key drivers include resin type, part volume, support/witness requirements, print time, wash/post-cure + finishing steps, and whether CTQ features require inserts or secondary machining.

Stereolithography(SLA / DLP)

Stereolithography(SLA / DLP)