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 routercarves 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 clientwaterproof, 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.
| Property | Value | Standard |
|---|---|---|
| Thermal conductivity λ @10°C | 0.033–0.045 W/m·K | |
| Nominal density (grade range) | 12–30 kg/m³ | |
| Compressive stress @10% | 60–200 kPa | |
| Reaction to fire (FRCel grade) | B-s1,d0 (if FRCel specified) | SANS 53501-1 |
Every test report and certificate behind these figures is on the test-report register.
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