CNC-milled EPS forms, signage, sets and architectural mouldings.
Kit queued
3D Milling is a made-to-order service in which Technopol's FROGMill CNC heavy-duty 4th-axis router carves full 3D forms from expanded-polystyrene (EPS) blocks to a customer's CAD file, worked either flatbed (XY) or on a rotary lathe.
| Property | Value | Standard |
|---|---|---|
| Process / machine | FROGMill CNC heavy-duty 4th-axis milling router; carves full 3D EPS forms to customer CAD, worked flatbed (XY) or on a rotary lathe | — |
| Base material | Expanded polystyrene (EPS); carving grade customer/detail-dependent | — |
| Thermal conductivity (λ, k-value @10°C, max) | 0.033–0.045 W/m·K | — |
| Nominal density (grade range 30DV–12SD) | 12–30 kg/m³ | — |
| Compressive stress @10% compression (min) | 60–200 kPa | — |
| Maximum part size | Flatbed 2650 × 1250 × 254; lathe/rotary 1800 long × Ø488 mm | — |
| Oversized parts | Built from multiple segments joined with interlocking puzzle joints | — |
| Protective coating | Polyurethane — supplied by Technopol, applied by client; waterproof, abrasion/impact/corrosion resistant, durable up to ~10 years | — |
| Accepted CAD file formats | 3D: IGS/IGES, STP/STEP, STL, OBJ · 2D: DWG, DXF | — |
| Company certifications | ISO 9001:2015 (ISO 14001 & 45001 lapsed Mar 2026, recertification in progress); Agrément SA 2020/609 (covers the LiteCore Building System only) | — |
Grade-dependent: the 3D Carvings brochure specifies no EPS grade — the grade a carving is cut from is customer/detail-dependent. λ, density and compressive strength therefore follow the chosen grade; the values shown span Technopol's full 12SD–30DV EPS datasheet (30DV: λ 0.033, 200 kPa; 12SD: λ 0.045, 60 kPa). These are general EPS datasheet figures, not a per-carving guarantee. Fire: no reaction-to-fire class and no fire-resistance (REI) rating is specified for milled carvings, and standard EPS is combustible. Technopol's separate flame-retardant grade, FRCel, is classified B-s1,d0 to SANS 53501-1 (tested on an ≈18.37 kg/m³, 60 mm sheet; Ignis test report 17.08.2023) — but its use in carvings is undocumented and must not be assumed for this service. Coating is supplied only; application is carried out by the client/contractor. No coating datasheet (DFT, coverage, UV, adhesion, fire behaviour) was located.
Values from Technopol technical documentation. Confirm the exact figures for your specification with Technopol.
Each figure is labelled with how we know it — a named in-validity test, a supplier value, an in-house calculation, or a test whose validity has expired.
| Property | Value | Standard | Source report | Status |
|---|---|---|---|---|
| Thermal conductivity λ @10°C | 0.033–0.045 W/m·K | — | Provisional | |
| Nominal density (grade range) | 12–30 kg/m³ | — | Provisional | |
| Compressive stress @10% | 60–200 kPa | — | Provisional | |
| Reaction to fire (FRCel grade; use in carvings undocumented) | B-s1,d0 (if FRCel specified) | SANS 53501-1 | IT 23-08-00009 | Provisional |
Labels are defined on our data promise; every source report is on the test-report register.
A material specified for the wrong job fails you, then us. We would rather lose the order.
No project on the public register is tagged to this application yet. Ask us for references — we will send the ones that match your building type.
Send us the drawings. We will size it, detail it and quote it.
We release technical documentation to named engineers and specifiers so we can support you properly on the project. One entry unlocks everything.
We will not share your details. POPIA compliant.