SLA vs FDM: which print process fits your part?

The two processes solve different problems. SLA (our Formlabs Form 4) cures liquid resin at 25–100 micron layers — it wins on detail, surface finish, and small precise features. FDM (Bambu P1S and A1) extrudes thermoplastic — it wins on toughness, cost per part, and larger functional pieces.

Pick SLA when

• Surface finish matters (visible parts, masters for molds)
• Features are under ~1mm
• You need tight dimensional accuracy on small parts

Pick FDM when

• The part takes mechanical load
• You need quantity — batches print cheap and fast
• Size exceeds the SLA build volume

Not sure? Start an order and describe the job — picking the process is part of the quote.