This Industrial Design Contract covers product design and CAD that I deliver as a project for you. The point is simple: I turn your brief or prototype into supplier-ready CAD and drawings that can be quoted and manufactured, and these terms explain how I run the work, what you get, and what each of us can expect along the way.
What you get
My job is to take your requirements and turn them into a design a manufacturer can quote and build, with clear part strategy, tolerances where they matter, and documentation a supplier can ask questions against.
The deliverables for your project are listed below. I will deliver them in the formats stated in the accepted proposal. Before I start concept work, I need your target cost, expected volumes, key dimensions and interfaces, compliance constraints, and benchmarks. If I am waiting on those inputs or on decisions that only you can make, the schedule shifts by the same amount.
* Concept sketch set * 3D CAD model * Part split and enclosure strategy * 2D engineering drawing pack * DFM notes and materials callouts * Prototype build liaison pack
Payment
Product design and CAD time is booked with an upfront invoice for 25% of the total price when you sign the proposal. I start work once that booking payment is received and I have the basics I need for the brief.
I invoice the remaining 75% when the finished work is handed over, and I hand over the final source files after that final payment so the released set matches the latest approved design. Each invoice is payable within 14 days of its date. If a payment goes past due, I pause work and any handover that depends on that payment until the account is up to date, and any supplier questions during the pause wait too.
Revisions and changes
A revision round is one set of changes based on one consolidated message from you. It covers tweaks within the agreed direction, like proportions, feature placement, part splits, fastening approach, draft, and tolerance targets. It is not a new brief.
I include two revision rounds at concept stage and two revision rounds after the first CAD release. After those rounds are used, or if you change requirements (for example a new PCB outline, a different process, new compliance constraints, or a new target cost that changes wall thickness and structure), I will write up the added scope and price it before I start. If a supplier asks for redesign to suit their tooling approach, I treat that as added scope.
Who owns what
Once the final 75% payment is received, you own the CAD and drawings I deliver for this project, and you can reuse them for manufacturing, future revisions, and additional suppliers. That includes sharing the delivered files with toolmakers, contract manufacturers, and consultants who are working on your product.
What I keep is my general know-how and my reusable tools, like templates, checklists, CAD standards, modeling methods, and any background details that are not specific to your design. Until the final payment is made, you can review and use the work for evaluation and internal decision-making, but you should not release it to production or tooling.
Portfolio use
I may show the finished work as a project in my portfolio, for example on my website, in a PDF, or in a meeting with a prospective client. When I do, I keep the focus on what was designed and how it was made, not on any confidential business information you shared.
If you need the project kept private, tell me in writing before I start, or any time before I publish it. I will then treat it as non-public and I will not post images, drawings, CAD screenshots, or your product name. If you are working toward a launch date, you can also ask me to hold portfolio use until you have announced the product, and I will follow that.
Limits and responsibilities
I design for manufacture based on the requirements you give me and the manufacturing assumptions we agree, and I document those decisions in CAD and drawings so a supplier can quote and build. I am not the manufacturer, and I cannot promise a supplier will build perfectly if they ignore the drawings, substitute materials, or change the process without review.
I am responsible for doing the work with care and for correcting errors in my deliverables that are identified within a reasonable time. I am not responsible for losses that come from production decisions made without checking the latest released files, or from changes a supplier makes after I have delivered. If you want me to review supplier feedback or toolmaker questions, I can, but only based on the files I delivered and within the agreed scope (or as added scope if it drives redesign).
Ending the project
Either of us can end the project by giving notice in writing. Because this is project-based work with booked time, I will confirm what I can finish up to the end date and what will be left for later, so there is no surprise at handover.
If you end the project, you pay for the work completed up to the end date, including any committed time spent on supplier coordination, drawing updates, or CAD rebuilds already in progress. Once that amount is paid, I will hand over what is complete in its current state, clearly marked as either released or work-in-progress. If I end the project for a reason outside your control, I will hand over the work done to date and invoice only for work completed. Any booking payment already paid is credited against the work actually delivered.
Signature
