Step 1
Discovery
We dig into your project, constraints, and goals to uncover the real blockers.
Mechanical design & CAD consulting
Mechanical design and CAD support that doesn’t slow you down.
We help engineering teams, manufacturing SMEs and founders eliminate CAD issues, reduce rework, and accelerate real-world builds.
Streamline your CAD workflow with reliable mechanical design expertise
Get cleaner models, better manufacturability, and faster turnaround so your team can stay ahead of deadlines.
25
Years of experience
7+
Industries served
25+
Clients served
Your Mechanical Design and CAD Optimization Partner
You don't just need CAD models. You need a design partner who understands how products behave in the real world. I’m David Gagnon, founder of Conception DJG Inc, a Senior Mechanical Designer with more than twenty-five years of hands-on experience turning ideas into manufacturable products. I specialize in mechanical design, 3D CAD modeling, DFM, and fixing the CAD issues that drain hours from busy teams.
Engineering managers call when their team is overloaded and buried in rework. SMEs reach out when deadlines are tight and they need expert support that keeps projects moving.
My approach is practical and outcome-focused. Clean models, manufacturable designs, and workflows that hold up under pressure. My goal is straightforward: fewer surprises, fewer revisions, and steady progress from concept to production. My job is to make your job easier and your project more successful.
Services & Expertise
Mechanical Design Services
End-to-end CAD design that removes bottlenecks and ensures your parts are ready for real-world performance.
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3D CAD Modeling Services
Highly detailed, manufacturable models that minimize revisions and keep production moving.
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Product Development Consulting
Clear, expert guidance to help you make faster, more confident product decisions.
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DFM Consultant (Design for Manufacturability)
Identify issues early, reduce manufacturing costs, and strengthen product reliability.
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CAD Workflow Optimization
Cleaner models, smarter templates, and a streamlined workflow that frees your team’s time.
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Proof of Concept / Prototype Design
Build confidence with early-stage prototypes that validate your direction before investing big.
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Start with a 10-10-10 Audit
If something feels off in your design—or you’re not sure why timelines keep slipping—the 10-10-10 Audit gives you instant clarity.
You get insights, file checks, and clear recommendations that help you move forward without guessing. You’ll know exactly what’s holding you back and what to fix before it costs you more time or budget.
What’s included
- Review of key CAD parts, assemblies, or drawings.
- Health check on templates, configurations, and file structure.
- Manufacturability review of critical components.
- Summary report with prioritized recommendations.
- Walkthrough call with time for Q&A.
Expert CAD Consulting in 4 steps
Step 2
Diagnosis
We analyze your models, workflows, and documentation to map out the root causes.
Step 3
Design and Optimization
We create or refine mechanical designs, CAD models, documentation, or manufacturability improvements.
Step 4
Delivery
You walk away with updated models, recommendations, and next steps you can use immediately.
Why work with Conception DJG Inc.?
Deep CAD engineering experience
Built on decades of real-world problem solving.
Flexible support
Available when you need help without long-term commitments.
Environmentally-conscious
Practical designs that reduce waste and extend product life.
Efficient design
Models that speed up manufacturing instead of slowing it down.
More predictable timelines
Fewer revisions, less rework, and faster approvals.What our clients say
“J’ai travaillé avec David comme gestionnaire du développement électrique et mécanique chez Evlo (filiale d’H-Q en stockage énergie électrique). Intégrant de nouvelles technologies et devant se conformer à de nouvelles normes de sécurité (UL9540), David devait concevoir et modéliser des armoires de batteries afin de maximiser leur refroidissement tout en minimisant les risques d’emballement thermique et d’incendie.”
“David a constamment pensé en dehors de la boîte pour résoudre des problématiques qui n’existaient pas encore. Je le recommande pour son sens aigu de la mécanique, sa créativité et sa compréhension profonde des outils qu’il maîtrise. Les projets sont livrés efficacement et selon les échéanciers.”
Frequently Asked Questions
Our mechanical design services cover 3D modeling, part and assembly design, material selection, tolerance analysis, and preparing models for manufacturing. The goal is simple: deliver designs that perform reliably, reduce rework, and move you from concept to prototype with fewer delays.
Our 3D CAD modeling services ensure your parts and assemblies are clean, accurate, and manufacturable. By removing unnecessary complexity and fixing stability issues in your CAD models, we reduce errors, speed up prototyping, and give your team a clearer workflow from early concepts to production.
As product development consultants, we turn early ideas into practical, manufacturable solutions. We evaluate requirements, build CAD models, assess risks, validate design decisions, and keep development aligned with performance, cost, and manufacturability goals.
A Design for Manufacturability consultant helps you avoid late-stage problems that slow production and inflate costs. We review geometry, materials, tolerances, and assembly methods early to reduce complexity, prevent rework, and keep timelines predictable.
CAD workflow optimization improves how your team creates, updates, and manages models. We clean feature trees, standardize templates, fix inconsistencies, and streamline the entire modeling process for faster, more consistent output across your engineering team.
Ready to Start Your Project?
Take the next step toward a design you can trust. Whether you need a full CAD overhaul or help validating your prototype, we're here to support your goals.