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Engineering services

Practical engineering support, scoped around the job you need done.

From a single CAD task or prototype through to component investigations, production tooling and engineering backlog support, D&L provides defined outputs without the overhead of another permanent engineer.

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Services

Engineering support across the product lifecycle

Choose a focused service below or send the problem first. Many projects cross more than one area, so the scope can be built around the deliverable rather than a rigid service category.

Illustrative 3D CAD product design showing an exploded electromechanical enclosure and internal components.

3D CAD & Product Design

Concepts, enclosures, brackets, assemblies and design changes developed into usable engineering geometry.

  • STEP / Parasolid
  • STL / 3MF
  • DXF / drawings
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Illustrative CAD-to-prototype workflow showing a 3D printed engineering housing.

3D Printed Prototypes

Physical parts for fit checks, concept evaluation, interface testing and design iteration.

  • Print-ready customer files
  • CAD + prototype packages
  • Iteration and reprint support
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Illustrative precision assembly jig and fixture designed around a machined component.

Jigs & Fixtures

Production tooling designed around repeatability, assembly, location and inspection.

  • Assembly aids
  • Locating fixtures
  • 3D-printable tooling
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Illustrative electronics component engineering workspace with PCB and alternative components.

Component Engineering

Replacement assessments for obsolete, unavailable or single-source electrical and electronic parts.

  • Datasheet comparison
  • Second-source research
  • Validation plans
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Illustrative engineering BOM rationalisation and component management workflow.

BOM Optimisation

Clean up legacy BOM data, reduce duplicates and expose lifecycle, sourcing and cost risk.

  • BOM clean-up
  • Rationalisation
  • Cost-down support
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Illustrative precision engineering component shown with detailed manufacturing drawings.

Manufacturing Drawings

Clear, controlled drawings for suppliers, production teams and engineering change.

  • Dimensions and tolerances
  • Revision support
  • Supplier-ready files
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Illustrative engineering design workspace combining CAD, electronics, drawings and project planning.

Fractional Engineering

Additional engineering capacity for defined tasks, technical backlogs and project peaks.

  • Project peaks
  • Backlog clearance
  • Defined support blocks
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A practical starting point

Not sure which service the job fits?

That is fine. Send the engineering problem, the information you already have and the output you need. The work can then be broken into a clear scope before anything chargeable starts.

1

Share the problem

Send a sketch, photo, drawing, BOM, part number or existing CAD file.

2

Define the output

Agree the model, drawing, prototype, comparison or support package you actually need.

3

Agree scope

Confirm assumptions, exclusions, cost and timescale before work starts.

4

Receive usable engineering

Get the agreed files, drawings, report or prototype-ready output.

Start with a brief

Need an extra pair of engineering hands?

A drawing, part number, rough sketch or a short description of the problem is usually enough to start scoping the work.

What to send

  • The problem or required outcome
  • Existing drawings, CAD, photos or BOMs
  • Critical interfaces or constraints
  • The output or file format you need
  • Your target timescale
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Engineering insights

Technical guidance related to our services

Explore the engineering reasoning behind component decisions, product definition, prototype development and production tooling.

Browse all engineering insights