Molded device housing shell
A molded shell with a screen aperture, speaker details and assembly features — tooling, molding and fit handled as one project.
Products · Precision injection parts
Transparent acrylic moulded parts
Clear parts to optical standards — the tooling and steel choice do most of the work.
Also searched asPrecision injection molded parts · precision moulded components · technical plastic parts · over-molded assemblies
Transparent molding is unforgiving: every polishing mark, flow line, weld line or sink mark is visible through the part, and the light shows defects that opaque parts hide. It is decided in the cavity, not by the press operator.
We specify NAK80 or S136 steel for transparent parts, polish by hand in-house to the agreed SPI class, use balanced cooling to avoid optical distortion, and gate away from the viewing area. Trial samples are inspected against the visual standard you set, not just the drawing.
Typical applications
- Clear covers and lenses
- Display windows
- Light guides and diffusers
- Medical and lab ware
Specification
What this class of tool is built to
Our standard specification for this type of tooling, confirmed line by line on the mold design approval sheet before machining starts.
| Mold construction | Two-plate, three-plate, hot runner, stack or family — specified per part |
| Cavity count | Single or multi-cavity, sized to annual volume, cycle time and press tonnage |
| Mold steels | P20, 718H, NAK80, S136, hardened H13 / SKD61 cores |
| Mold work tolerance | ±0.01 mm |
| Machine accuracy | Down to 0.001 mm (Yasoda, OKUMA, GF, Makino) |
| Runner | Cold runner, hot runner or valve gate |
| Surface finish | SPI A1–D3, bead blast, leather grain or your texture |
| Cooling | Machined circuits; baffles or bubblers where geometry requires |
| Ejection | Pins, sleeves, stripper plate, lifters, unscrewing or collapsible core |
| Verification | Swiss Hexagon CMM and Zeiss Contura; dimensional report at T1 |
| Molding | 30 presses from 20T to 300T, in the same building |
| Documentation | 2D/3D drawings, steel and component certificates, parameter sheet, spare parts |
| Lead time | Typically 15–30 days of machining after design approval |
| Tool ownership | Yours — the tool is designed to be transferable |
Values above are our standard capability for this class of tool, not fixed figures for a specific project. Cavity count, steel grade, runner type and finish are agreed with you on the design approval sheet before any steel is cut.
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Next step
Ask for a DFM review and a price for your part
STEP/IGES/X_T files, the resin, your annual volume and target market are enough to get a mold price, a cycle estimate and the risks we can see — usually in 1–2 business days.