Process
Eight stages take a part from file to finished goods, each with a defined parameter range and delivery checkpoint. This page sets out how each step is run, the values we hold, and the usual causes of delay.
Eight process steps
Select a step on the left to see how it runs and its parameters. Times below are per part excluding shipping; batches are combined.
Files are reviewed first: wall thickness, normals, non-manifold edges, minimum features and assembly clearance. Issues are listed with recommendations before printing.
Orientation follows load direction, critical dimensions and cosmetic faces. Support contacts avoid mating and visible faces, with local allowance added where needed.
Layer height and anti-aliasing follow feature size, with exposure tuned per cross-section — lighter for small sections, compensated for shrinkage on large ones.
A 405 nm engine projects the full cross-section onto the vat floor, curing every part in the build at once; part-to-part variation comes mainly from post-processing.
Two-stage cleaning: soak to dissolve bulk resin, then brief ultrasonics for fine holes and tube bores. Clear parts are under-washed to preserve clarity.
Measured post-cure at the wavelength matched to the resin, balancing surface dryness against mechanical properties and avoiding brittleness or shrinkage.
Supports are cut and sanded through successive grits, with mating faces finished to assembly feel. Clear parts add polishing.
Critical dimensions are sampled or fully inspected against the drawing, and appearance is compared with the approved sample. Batch orders ship with lot, material and inspection records.
File preparation
Most delays happen at the file stage. Checking the points below before sending usually completes assessment and scheduling in one pass.
STEP or 3MF preferred; STL must be dense enough. Shells should be closed solids, avoiding zero-thickness faces and open edges.
State tolerance requirements for snap fits, inserts and mating faces in the drawing or notes; they determine layer height and finishing tier.
Which faces must be free of support marks and which can be sanded drives the orientation; marking the critical faces is enough.
Whether the part is worn or structural, the contact area and the batch range all directly affect material and finishing choices.
Lead time
Standard lead times below; the marked stages are the usual causes of slippage and can be compressed if flagged early.
| Stage | Standard duration | What extends it |
|---|---|---|
| File assessment | 0.5–4 h | Model needs repair, tolerances not stated |
| Scheduling and printing | By part height | 25 μm layer height, tall parts |
| Cleaning and second-stage curing | 1–1.5 h | Long, thin tubes needing repeated clearing |
| Post-processing | 0.5–2 h / part | Manual tiers such as polishing or painting |
| Inspection and packing | 0.5 h | 100% inspection of critical dimensions |
Rush orders can be slotted in — state the latest acceptable arrival date and we will give an honest feasibility call rather than agreeing first.
Check the file preparation list first to save a round trip, or submit your requirements and we will assess it for you.