Resin or nylon? SLS or MJF? Each has its place.

Both fuse nylon powder using powder bed fusion. SLS (Selective Laser Sintering): uses laser to fuse powder point-by-point. MJF (Multi Jet Fusion, HP proprietary): inkjet deposits fusing agent, then heats entire layer. MJF is faster (40–60% less print time), slightly better surface finish (Ra 6 vs 8 µm), more consistent part density. SLS is more established, slightly better for glass-filled materials. For most nylon prototype work, MJF is the better modern choice.

Yes on all three processes, but effectiveness varies. SLS and MJF nylon: threads can be printed directly and hold adequately for low-cycle applications. Standard practice: print slightly oversized hole, then thread-tap after printing for reliable threads. Heat-set brass inserts also work well in nylon. SLA resin: threads are fragile and often strip — heat-set inserts recommended. For critical threaded connections, use inserts regardless of 3D print process.

Depends on part complexity. Simple part with no undercuts: injection molding typically cheaper at 100 parts once tooling amortizes ($3000 tool spread over 100 parts is $30/part tooling cost). Complex geometry impossible to injection mold without complex tooling: MJF can be cheaper because no tooling required. Also: MJF supports design iteration without tooling changes. For production parts that won't change, injection molding wins. For production parts that might iterate, MJF wins.

SLA: 24–48 hours typical for standard parts. Rush: 24 hours possible. SLS: 3–5 business days typical. Rush: 48 hours possible. MJF: 3–5 business days typical. Rush: 48 hours possible. All scale linearly with quantity — SLS/MJF batch many parts in one print, MJF slightly faster because single build cycle fuses entire layer at once.

SLA: ±0.1 mm typical on critical features, ±0.05 mm achievable with careful orientation. SLS: ±0.2 mm typical, ±0.1 mm on small features with careful orientation. MJF: ±0.15 mm typical, ±0.05 mm on features under 10 mm. For features below 1 mm or tight tolerances, consider CNC instead of 3D printing. For general prototype fits and clearances, 3D print tolerances are adequate.

Yes — common workflow. Example: functional parts in MJF nylon (durable, testable), visual trim parts in SLA (smooth cosmetic surface), combined into prototype assembly. Or: complex geometry in MJF (print difficult shapes), precision features in CNC (drill and thread holes to tolerance). We offer all three processes in-house plus CNC — combine on single PO for integrated workflow.