Concept development
Sketches, options and a design direction agreed with you before detailed work starts.
Product & industrial design · London
Product design that is built for manufacturing.
From first sketch to prototype-ready files, Castle X designs products and mechanical parts that work in the real world: functional, cost-effective and optimised for the manufacturing process from day one. No back-and-forth, no guesswork, just precise parts built to spec.
300+Design projects delivered
100+Analysis projects delivered
100%On-time delivery
15+Years of experience
What's included
Everything from the first survey to handover.
Pick the parts you need, or let one team carry the whole project.
Mechanical & industrial part design
Parts designed with tolerances, materials and finishes specified for the workshop.
3D CAD & prototyping files
Models and files ready for CNC machining, 3D printing, moulding or fabrication.
Design for manufacture
Reviews that reduce part count, cost and assembly time before tooling.
Production drawings
Dimensioned 2D drawings, assemblies and bills of materials for your supplier.
Supplier & sourcing support
Materials, fixtures and components sourced to match your drawings and programme.
How it works
Four stages. One accountable team.
We don't hand over drawings and disappear: the same people carry your project from the survey to the site.
- Stage
Brief
Requirements, constraints, quantities and target cost.
- Stage
Concept
Options and a direction you sign off.
- Stage
Detail design
CAD, tolerances, materials and DFM review.
- Stage
Prototype & release
Files for prototyping, then production drawings and BOM.
What you receive
Files your builders can build from.
Numbered, revision-controlled and delivered in the formats your contractors and manufacturers already use.
3D modelsSTEP · IGES
2D drawingsDXF · PDF
Bill of materialsCSV · XLSX
RendersImages for pitches and listings
Questions
Before you get in touch.
Anything else, the assistant in the corner answers right away, or message us on WhatsApp.
Can you take an idea from a sketch to a manufacturable product?+
Yes. We take rough concepts through to fully detailed technical drawings, 2D and 3D, ready for immediate manufacturing, and we can support you through prototyping and your first production run.
Which manufacturing processes do you design for?+
CNC machining, sheet metal, welding and fabrication, injection moulding, casting and 3D printing. We choose the process with you based on quantities, cost and function.
Do you sign NDAs?+
Yes. We are happy to sign a non-disclosure agreement before you share your idea or drawings.
How do fees work?+
After a short call we send a written proposal with a fixed fee for a defined scope. Larger projects are split into stages so you only commit to one stage at a time.
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