What "Large-Format" Means at RADIANT HONOR

Large-format thermoforming is the manufacturing route for parts that are too wide, too long, or too low in volume for conventional injection molding. It is not a different material or a different technology — it is the same vacuum forming process, scaled up and equipped with the tooling and trimming capability to handle big parts.

How Large-Format Forming Differs from Standard Thermoforming

The basic principle is the same: heat a flat plastic sheet until soft, stretch it over a mold, apply vacuum or pressure to pull the sheet against the mold surface, and trim the finished part.

But at large scale, several things change:

• Sheet handling — A 5000 × 2500 mm sheet at 6 mm thickness weighs over 100 kg. Loading, heating, and transferring this sheet requires specialized equipment and trained operators.
• Heating uniformity — A large sheet has more thermal mass and more surface area. Our ovens are configured to deliver uniform temperature across the full sheet dimension, preventing localized overheating or insufficient heating.
• Wall thickness distribution — On a large panel with deep features, the material stretches significantly more in some areas than others. We map thin zones before tooling and adjust geometry, plug assist design, or forming parameters to maintain adequate wall thickness at critical locations.
• Trimming precision — A large panel has more absolute dimensional variation than a small part. Our 5-axis CNC trimming locates the part from formed datums and cuts mounting holes, openings, and the outer profile to ±0.2 mm precision regardless of panel size.
• Tooling approach — Aluminum or composite molds are the standard for large-format thermoforming. A steel injection mold of equivalent size would be prohibitively expensive and unnecessary at the volumes that typically drive large-format part programs.

Material Processing at Large Format

Not every thermoforming material behaves the same at large scale. Here is how the common materials perform in large-format forming:

What Large-Format Forming Produces

Large-format thermoforming is used when the part is wide and the volume is moderate:

• Wide exterior panels — Body panels, fascia, and protective covers for vehicles and equipment
• Equipment shells — Machine housings, control cabinets, and protective enclosures
• EV charging station enclosures — Outdoor-rated cabinet shells with cable pass-throughs and mounting features
• Industrial equipment covers — Machine guards, access panels, and protective shrouds
• Large protective guards — Transparent or opaque shields for sensitive equipment
• Transport and logistics components — Large trays, liners, and protective packaging

The Project Workflow

Every large-format project follows the same 8-step workflow:

1. DFM Review — We review your CAD file for draft angles, wall thickness, undercuts, and trim feasibility. Feedback within 24–48 hours. No charge.
2. Material & Gauge Selection — We recommend materials and starting sheet thickness based on your part's function, environment, and volume.
3. Sheet Extrusion — Custom colors, textures, and multi-layer constructions are extruded in-house on our 3 extrusion lines.
4. Tool Making — Aluminum or composite molds are CNC-machined in our tooling workshop. Typical lead time: 2–4 weeks.
5. Vacuum Forming — Heavy-gauge sheet is formed on our 23 forming machines. Maximum bed: 5000 × 2500 mm.
6. 5-Axis CNC Trimming — 19 five-axis machines trim the part to final dimensions. Precision: ±0.2 mm on trimmed features.
7. Finishing — Painting, silk screen printing, texture application, and bonding in-house.
8. Quality Control & Packaging — Dimensional inspection, appearance checks, and custom packaging for shipment.

What to Send Us for a Process Evaluation

• CAD file — STEP, IGES, or STL format
• Part dimensions — Expected panel size or forming area
• Sheet thickness preference — Or we will recommend
• Material preference — Or we will recommend based on application
• Annual volume — Expected units per year
• Service environment — Indoor/outdoor, temperature range, chemical exposure
• Surface finish requirements — Color, texture, gloss level
• Mounting features — Holes, bosses, flanges, inserts

Call to Action

Evaluate Your Project with Our Engineering Team

Send us your CAD file, part dimensions, and volume estimate. We'll confirm whether large-format thermoforming is the right process, recommend materials and gauge, and provide a free DFM analysis and quote within 24–48 hours.

Contact our engineering team at us to discuss your custom ergonomic aesthetic equipment housing project.