Specialist Technical Consultancy

Our Specialist Services

PAC CAD LTD provides end-to-end scientific and technical consultancy from Hemel Hempstead, delivering precise CAD design, robust engineering analysis, and methodical project support for organisations that demand dependable results.

Core disciplines
CAD, Engineering, Planning, Prototyping, Consulting
Typical clients
Manufacturers, product teams, R&D, start-ups

Multi-Discipline Capability

Scientific & Technical Services

High-end CAD design workstation displaying a detailed engineering model

Integrated support across CAD, engineering analysis, project planning, prototyping, and scientific advisory for complex technical programmes.

Core Technical Service Areas

From early concept through to validation and delivery, our engineers and scientists provide practical, evidence-based support that integrates seamlessly with your internal teams and processes.

Digital Product Definition

CAD Design & Drafting

Close-up of a detailed 3D CAD model with precise engineering features

We provide precise 2D and 3D CAD modelling using industry-standard platforms to create detailed technical drawings, assemblies, and manufacturing documentation. Every model is structured for downstream use in analysis, prototyping, and production.

  • Parametric 3D models and complex assemblies
  • Fully detailed 2D manufacturing and GA drawings
  • Tolerance schemes and GD&T to current standards
  • BOM creation and configuration-ready CAD datasets

Simulation & Verification

Engineering Analysis

Engineering analysis software screen visualising simulation results

Our team performs advanced engineering analysis for structural, thermal, fluid, and motion behaviour using robust simulation tools. We translate complex data into clear engineering recommendations.

  • Linear and non-linear structural FEA for strength and stiffness
  • Thermal studies for heat transfer and temperature stability
  • CFD-driven insights for flow performance and pressure loss
  • Motion and kinematic assessments for dynamic assemblies

Delivery Architecture

Technical Project Planning

We develop detailed project roadmaps, schedules, and resource plans that reflect real technical constraints and dependencies. Our structured planning ensures that complex programmes remain controlled, transparent, and aligned to your commercial objectives.

  • Requirements breakdown and work-package definition
  • Phase-gated delivery plans with technical checkpoints
  • Risk and dependency mapping with mitigation actions
  • Cross-functional coordination across design, test, and manufacturing

From Model to Hardware

Prototyping Support

Engineers collaborating around a prototype component and CAD visuals

We guide you through each stage of prototype creation, coordinating with suppliers and internal teams to validate function, manufacturability, and user requirements as efficiently as possible.

  • Material selection advice aligned to use case and cost targets
  • Design-for-manufacture (DFM) and design-for-assembly (DFA) review
  • Liaison with fabrication partners and rapid prototyping vendors
  • Structured test plans, feedback loops, and design iteration

Concept to Launch

Product Development Consulting

Our product development consulting service combines technical depth with market-aware thinking. We help you translate ideas into validated, manufacturable products with a clear requirements trail.

  • Requirements capture and system-level architecture definition
  • Design trade-off studies balancing performance, risk, and cost
  • Verification and validation planning aligned to regulations
  • Support through pilot builds and preparation for scale-up

Evidence-Led Guidance

Scientific Advisory

We provide independent scientific consultancy and expert opinion for R&D projects, technical disputes, and regulatory submissions. Our advisors focus on robust evidence, clarity, and traceable reasoning.

  • Technical due diligence and feasibility assessments
  • Support for regulatory and standards-based submissions
  • Expert review of experimental design and data integrity
  • Clear documentation and presentations for stakeholders

Multi-Industry Expertise

PAC CAD LTD supports organisations across a wide range of sectors, adapting our technical approach to suit each domain while maintaining a consistent standard of engineering rigour and documentation quality.

Product & Manufacturing

  • Industrial and precision manufacturing
  • Automotive and specialist vehicles
  • Consumer and durable products

Energy & Technology

  • Energy systems and infrastructure
  • Electronics and electro-mechanical assemblies
  • Scientific and laboratory instrumentation
Technical team conducting a collaborative design review around CAD data
Collaborative reviews keep stakeholders aligned while maintaining a clear engineering baseline.

Client-Centric Approach

Every engagement is shaped around your organisation's goals, governance, and communication preferences. We integrate with your existing processes rather than forcing you into a predefined model.

  • In-depth discovery: Early conversations focus on context, constraints, and risk exposure to avoid assumptions later.
  • Transparent communication: You receive concise, technically clear updates that support internal decision-making.
  • Collaborative ethos: We work alongside your teams and suppliers, sharing models, data, and rationale.
  • Traceable decisions: Key choices are documented so future design and audit activities remain efficient.

Why Choose PAC CAD LTD

Technical excellence, reliability, and a commitment to measurable outcomes underpin every project we deliver. Our work is designed to withstand real-world use, internal scrutiny, and external audit.

Technical Rigor

We apply engineering best practice across modelling, analysis, and documentation, ensuring each deliverable is consistent, reviewable, and ready for integration into your wider programme.

Dependable Delivery

Clear scopes, realistic schedules, and proactive risk management keep projects on track, with early visibility of any issues that may affect cost or timing.

Measured Value

Our outputs are tied to specific decisions and milestones, from de-risking a concept to validating a design for manufacture, so you can clearly see the value created.

Precision laboratory detail representing technical accuracy and quality
A focus on precision, traceability, and robust evidence runs through every aspect of our work.

Ready to discuss your next project?

Whether you require targeted simulation support, a full CAD-to-prototype workflow, or independent scientific advice, PAC CAD LTD provides structured, pragmatic help from our base in Hemel Hempstead, United Kingdom.