Product design articles

Articles designed to support real product decisions.

These guides answer the questions founders, engineering teams, and product leads face when moving a physical product toward launch. They explain the trade-offs, show practical examples, and point to the next decision worth making.

20 published long-form guides
18 decision tools to test assumptions before you commit
04 core themes: manufacturing, sustainability, development, commercial planning

Cornerstone guides

Start with the broadest product decisions.

Start here if you need clarity on whether a product should be built, how it should be made, or what will make the opportunity commercially sound.

Manufacturing systems

When does injection moulding become cheaper?

A deeper guide to break-even volume, timing risk, bridge production, design stability, and what teams should validate before committing to tooling.

Sustainable design

The most sustainable product is the one you never make.

A practical guide to whether a product creates enough customer value to justify its material, energy, and service burden.

Idea validation

How to validate a product idea before you build it

Test whether the problem is real, the buyer is clear, and the product deserves development effort before the specification starts to harden.

Design for assembly

Estimating assembly time during design.

How to turn part count, fastening effort, handling, reorientation, and QA burden into early architecture signals before labour cost gets locked in.

Sustainability and concept work

Use articles to sharpen early design judgement.

These guides help decide whether a concept deserves momentum and how to compare its likely impact before detailed engineering data exists.

Carbon

Estimating product carbon footprint during design

Compare material, manufacturing, transport, use-phase, and lifetime assumptions before a formal lifecycle assessment exists.

Concept selection

How engineers choose between concepts

Use weighted criteria and cleaner decision logic to compare concepts without turning the process into a subjective debate.

Lifecycle

Why product lifetime matters more than recycling

See why durability, repairability, and use-phase behaviour often matter more than narrow recycling claims.

Development and manufacturing

Plan the route from concept to production.

These guides focus on process clarity, staged manufacturing commitment, and the operational logic that sits behind scaling a product responsibly.

Process

Mapping the product design process

Map discovery, prototyping, verification, industrialisation, and launch effort around the realities of the project rather than a generic stage-gate diagram.

Prototype strategy

Prototyping vs production: a startup guide

Choose prototype methods based on what the next build needs to prove, not on which process sounds most production-like.

Costing

How to estimate manufacturing cost for a hardware product

Build a bottom-up manufacturing cost model using materials, process, bought-in parts, labour, packaging, scrap, and overhead.

Production strategy

The risk-progressive manufacturing strategy

Understand why prototype, bridge, and scale production should usually be treated as deliberate stages rather than one rushed commitment.

Commercial planning

Translate product decisions into a viable hardware business.

These articles connect unit economics, business-case quality, go-to-market design, and investor-facing metrics into one decision flow.

Economics

How to turn RRP into target COGS

Work backwards from retail price once VAT, route costs, packaging, logistics, and margin targets are counted.

Business case

Building a hardware business case

Connect addressable market, reachable demand, conversion, operating cost, and payback timing before scaling a concept on belief alone.

Channels

Why route to market matters for product margins

See how DTC, marketplace, and retailer routes change the money left for COGS once hidden costs are included.

Investor view

Hardware investor metrics that actually matter

Focus on the numbers that reveal whether the business is becoming stronger: revenue quality, gross margin, CAC, payback, and runway.

Cashflow

Calculating hardware startup cash flow

See why stock timing, payment delay, and overhead can break the business before the top-line starts to look healthy.

Break-even

Financial break-even for hardware products

Use contribution margin and fixed-cost recovery properly, and understand what break-even analysis still leaves out.

Pre-launch budget

Estimating hardware development costs before launch

Estimate engineering, prototypes, tooling, compliance, inventory, launch work, and contingency before the funding conversation hardens.

Supplier and launch readiness

Prepare the manufacturer conversation properly.

These guides help teams show up to supplier conversations with clearer documents, better questions, and the right level of legal and technical preparation.

IP protection

How to protect product IP before talking to manufacturers

Protect sensitive product information with staged disclosure, cleaner file control, better supplier discipline, and the right use of NDAs.

IP and preparation

Must-have documents before talking to a manufacturer

Prepare NDAs, scope notes, drawings, BOMs, prototype evidence, and the actual questions you want a supplier to answer.

Need a clearer route through the articles?

Use the guides hub if you want the articles grouped by decision type, or the ready-to-launch roadmap if you want them arranged as a product-development sequence.