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Filame Launches Free Online 3D CAD & STEP Viewer with DFM Analysis

Inspect 3D CAD files (.STEP, .STP, .IGES, .STL) directly in your browser. 100% private client-side parsing, bounding box, surface area, and alloy weight estimation.

November 6, 2026
Filame Launches Free Online 3D CAD & STEP Viewer with DFM Analysis

The Filame Group is pleased to announce the launch of its newest digital engineering tool: the Online 3D CAD & STEP File Viewer. Designed for mechanical engineers, R&D departments, and industrial buyers, this web-based tool enables instant inspection, geometric dimensioning, and unit weight estimation for 3D CAD models directly in the browser—with zero software installation required.

100% Client-Side Privacy: Zero Server Uploads

In precision manufacturing sectors such as aerospace, defense, automotive, and medical equipment, intellectual property and non-disclosure agreements (NDAs) are paramount. Conventional web converters frequently upload CAD files to remote third-party servers, posing critical confidentiality risks.

Filame’s 3D CAD viewer solves this challenge through modern WebAssembly (WASM) technology:

  • All parsing occurs locally within your browser’s client-side memory sandbox.
  • Proprietary geometry never leaves your workstation, ensuring strict data privacy and compliance with industrial security standards.
  • Instant processing of files up to 50 MB without waiting for file uploads or cloud rendering queues.

Key Capabilities & DFM Analysis

  • Universal Format Support: Open solid models in ISO 10303 STEP format (.step, .stp in AP203, AP214, and AP242 protocols), IGES (.iges, .igs), and polygon mesh formats (.stl).
  • Interactive 3D Navigation: Smooth orbital rotation, pan, zoom, edge-wireframe overlay toggling, and preset orthographic views (Top, Front, Side, Isometric).
  • Precise Envelope Dimensions: Instant measurement of the exact bounding box envelope ($X \times Y \times Z$ in mm) and total outer surface area ($mm^2 / cm^2$).
  • Real-Time Unit Weight & Volume Calculator: Instantaneous volumetric calculation paired with certified industrial alloy densities:
  • Seamless RFQ Integration: One-click transfer of all extracted dimensions, surface area, and material choices directly into Filame’s manufacturing inquiry portal.
Online CAD Tool 100% In-Browser & Private

Launch 3D CAD & STEP Viewer

Inspect .STEP, .STP, .IGES, and .STL files instantly in your browser. Measure bounding box envelopes, surface area, and calculate alloy unit weight without uploading files to external servers.

OPEN 3D CAD VIEWER → Instant B-Rep Meshing & Quote Transfer

Bridging Digital CAD Design and Industrial Manufacturing

Whether you are designing custom stamped components, laser-cut sheet metal profiles, precision CNC bent brackets, or helical springs and wire forms, accurate early-stage geometric verification prevents costly design revisions down the line.

Filame’s in-house engineering design studio and tooling department in Nivelles, Belgium, utilizes advanced CAD/CAM modeling (SolidWorks, VISI) combined with more than 50 years of metalworking expertise. This new online viewer gives design teams an immediate, zero-barrier gateway to validate parts and collaborate directly with our production specialists.

👉 Launch the Online 3D CAD & STEP Viewer or explore our complete online engineering calculation suite.

Questions & Answers

01 Is my 3D CAD file kept confidential when using Filame's online viewer ?
Yes, 100%. The viewer processes your 3D files entirely inside your web browser using WebAssembly (WASM). Your proprietary .STEP, .STP, .IGES, or .STL models are never uploaded to an external server or stored in the cloud, guaranteeing full NDA compliance for defense, medical, and aerospace projects.
02 Which CAD file formats and sizes are supported ?
The viewer supports ISO 10303 STEP solid models (.step, .stp, AP203, AP214, AP242), Initial Graphics Exchange files (.iges, .igs), and stereolithography polygon meshes (.stl) up to 50 MB, suitable for inspecting stamped parts, bent sheet metal, and wire forms.
03 How does the tool estimate unit weight and material volume ?
The analyzer performs solid boundary representation (B-Rep) tessellation and computes closed volumes using divergence theorem signed tetrahedrons. It pairs that geometry with certified densities for engineering alloys—such as 1.4310 stainless steel, carbon spring steel, brass, and aluminum—to determine exact weight.
04 Can measured CAD parameters be transferred directly into a quotation request ?
Yes. With a single click, your component's bounding box ($X, Y, Z$), surface area, solid volume, and selected alloy are transferred into Filame's technical quotation system, accelerating design-for-manufacturing (DFM) reviews.
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