ONMOTIO prototype mid-build in the workshop

    [ PROTOTYPING ]

    Every prototype earns its build.

    We build prototypes that answer specific questions: does the form feel right in the hand, does the assembly fit together, does the firmware survive a real-world environment. Foam to functional, 24-hour FDM to field-tested batches of 200, every build is scoped against what you actually need to learn.

    300+ prototypes built. 15+ processes used. 48-hour fastest turnaround. Prototyping behind SolarSmart Mower, Orphey, and KORU.

    [ IS THIS FOR YOU ]

    Prototyping with us is the right next step if…

    [ A GOOD FIT ]

    • You need to validate form, fit, and function physically before committing to production tooling.
    • You need user-testable prototypes for real research sessions, not desk demos.
    • You need an investor-grade demo unit that communicates product maturity.
    • You need a small batch (10–200 units) for trade shows, early sales, or pilot programs.
    • You need fully functional prototypes integrating mechanical, electronics, and firmware.

    [ PROBABLY NOT ]

    • You haven't finished the design yet Industrial Design
    • You need mass production directly, not validation builds. We can advise on manufacturing partner selection Talk to us
    • You only need a 3D-printed visual model with no functional requirement. That's faster and cheaper from a print-on-demand bureau Get a referral

    [ MATCHING TOOL TO QUESTION ]

    Every question deserves the right prototype.

    The wrong prototype answers the wrong question, wastes time, money, or both. Here's how we think about matching the build to what you actually need to learn.

    [ IF YOU NEED TO KNOW… ]

    [ THE RIGHT PROTOTYPE IS… ]

    [ WHY ]

    Does the form feel right in the hand?

    Foam or low-fidelity volumetric model

    Cheap, fast, perfect for ergonomic intuition. CAD doesn't tell you this.

    Will the parts actually fit together?

    CNC-machined parts in production-representative materials

    Tolerance and material behavior matters here. FDM lies.

    Will users figure out how to use it?

    Functional appearance prototype with working controls

    Usability testing fails on dead models. The buttons have to click.

    Does the full system survive real conditions?

    Field-testable functional prototype, electronics integrated

    The only way to discover the failure modes that simulation can't predict.

    Can we sell 50 units before tooling?

    Vacuum-cast small batch (10–200 units)

    Production-representative parts at pre-tooling cost. Ideal for crowdfunding fulfillment or pilot sales.

    Can we show this to investors next week?

    High-finish appearance model, no internals

    Communicates product maturity without the time and cost of full functionality.

    SolarSmart Mower field-tested prototype

    [ IN PRACTICE ]

    SolarSmart Mower: from CAD to the lawn in 12 weeks.

    SolarSmart Mower is a self-sustaining, fuel-free smart lawnmower destined for crowdfunding. The brief required a fully functional, field-testable prototype that could prove the product worked in the real environment it would ship into, not just on a workshop bench. We built a lightweight CNC chassis, integrated a 50W solar panel with intelligent power distribution, dual 40V lithium-ion batteries, soil and grass sensors, an automated fertilizer dispenser, and self-propulsion with a height-adjustable cutting deck. Then we took it to actual lawns to validate it cut, charged, navigated, and fertilized as designed.

    50W

    Solar with intelligent power

    Dual 40V

    Li-ion battery management

    12 wks

    CAD to field-tested cycle

    Field-tested

    On real lawns, not benches

    [ POINT OF VIEW ]

    How we approach prototyping.

    Four principles that shape every prototype we build. Strong opinions about what makes a prototype worth its build, and what makes one a waste.

    Prototype build in progress
    01

    Every prototype answers ONE question.

    The most expensive prototypes are the ones that try to answer everything and end up answering nothing. We define the testing objective before the build begins, then we build only what's needed to answer that objective. Other questions get their own prototypes, sometimes faster, sometimes cheaper, always sharper.

    02

    Foam is honest. CAD is hopeful.

    Ergonomic decisions made on a screen are wrong half the time. We test physical mass distribution, grip geometry, and tactile feedback in foam before any rendered model gets approval. If the foam doesn't feel right in the hand, the digital model doesn't matter.

    Foam studyFoam
    CAD modelCAD
    03

    A $500 prototype prevents a $50,000 tooling change.

    Discovering a fitment issue, an interference, or a failed assembly sequence on a prototype costs hours. Discovering it on production tooling costs months. We front-load physical validation aggressively. Every issue found in the prototype phase is an issue not paid for at the factory.

    $500
    Proto
    $5K
    Pilot
    $50K
    Tooling
    04

    We finish prototypes.

    Most prototype shops deliver something rough that proves the engineering and stops there. Stakeholder buy-in lives in the finishing: paint, surface quality, badge alignment, accurate CMF. A prototype that looks like a real product gets believed. One that looks like a clay model gets second-guessed.

    [ INSIDE THE WORKSHOP ]

    Where the prototypes get built.

    Renders are someone else's job. This is the bench, the chassis, the finish work, and the field photo of a build that survived contact with real users.

    SolarSmart chassis, mid-assembly, awaiting battery integration.
    SolarSmart chassis, mid-assembly, awaiting battery integration.
    KORU enclosure, finishing pass before user-test handover.
    KORU enclosure, finishing pass before user-test handover.
    HiRail sub-assembly, weight-and-balance fixture.
    HiRail sub-assembly, weight-and-balance fixture.
    Functional prototype build, electronics integrated to the chassis.
    Functional prototype build, electronics integrated to the chassis.
    SolarSmart Mower, on the lawn it was built to ship into.
    SolarSmart Mower, on the lawn it was built to ship into.

    [ THE PROCESS ]

    The prototyping process.

    Typical engagement: 2–8 weeks

    Five steps. Multi-prototype programs scoped separately. Every step documented in pictures, not just words.

    Prototype Strategy01

    Prototype Strategy

    Day 1–3

    We define what each prototype needs to prove. Different questions, different prototypes, we plan the most efficient path to your testing objectives.

    OutputPrototype plan with build types, materials, and test criteria.
    Process & Material Selection02

    Process & Material Selection

    Day 3–5

    Choosing the right manufacturing process based on accuracy needs, surface finish expectations, and timeline. We often combine multiple processes in a single prototype for the best result.

    OutputProcess-and-material plan agreed with you.
    Fabrication & Assembly03

    Fabrication & Assembly

    24h to 4 weeks

    In-house fabrication using our workshop facilities, supplemented by our network of specialist vendors for specific processes. Every part inspected before assembly, every assembly tested against the prototype's learning objectives.

    OutputAssembled prototype, photographed and documented.
    Testing & Documentation04

    Testing & Documentation

    1–2 weeks

    Structured testing against the requirements defined in Step 01. Dimensional inspection, functional testing, photographic documentation, formal test report. We document what worked, what didn't, and specific recommendations for the next iteration.

    OutputTest report with prioritized findings.
    Iteration Recommendations05

    Iteration Recommendations

    End of project

    Based on prototype testing, we provide prioritized design change recommendations with risk assessment for each. This feeds directly into the next design cycle.

    OutputRecommendations document, ready for the next phase of design or engineering work.
    ONMOTIO prototyping team in the workshop

    The ONMOTIO workshop team

    Prototyping, fabrication, finishing

    [ THE TEAM ON THIS ]

    The hands behind the work.

    Our prototyping work is led from the workshop, not from a project management dashboard. On a typical engagement the team sizes to the build, anywhere from one technician for a single appearance model to four-plus for a fully integrated functional prototype with electronics.

    We're hands-on through every build, including the finish work that separates a credible prototype from a rough demo. The same people who plan the prototype run the bench, finish the parts, and write the test report.

    Eduardo Leardini, Head of Product Development

    [ WHY ONMOTIO ]

    Why teams hire us for prototyping.

    Functional, not just cosmetic.

    Most prototype shops will print you a shell. We build prototypes that integrate the mechanical, the electronics, and the firmware, fully functional units that can be tested, demonstrated, and field-validated. No "imagine this part is working" demos.

    We finish prototypes properly.

    Surface finish, paint, pad printing, assembly cleanup, the details that turn a build into something that gets believed. Stakeholder buy-in dies on rough prototypes; we don't ship rough.

    Strategy, not vendor-style transactions.

    We define what a prototype is for before we build it. The wrong prototype answers the wrong question. We help you scope the build against the actual decision it needs to enable.

    Small batch capability for early commercialization.

    Vacuum casting from silicone molds gives you 10–200 production-representative units without tooling, ideal for crowdfunding fulfillment, trade-show samples, early customer pilots, or user-testing at scale.

    [ FAQ ]

    Common questions.

    You do. Once we deliver and you've paid the final invoice, all prototype IP and the physical units transfer to you. We retain only the right to feature the work in our portfolio with your approval.

    Single appearance models start in the low four-figures. Functional integrated prototypes (mechanical plus electronics plus firmware) start in the low five-figures. Small-batch programs (10–200 units, vacuum-cast or soft-tooled) are scoped separately based on quantity and finish requirements.

    For simple FDM prints, 24–48 hours. CNC-machined parts, typically 5–7 days. Fully assembled functional prototypes, 2–4 weeks depending on complexity and component lead times. We'll be honest about timeline at the discovery call.

    Yes. Using vacuum casting from silicone molds we can produce 10–200 units of production-representative parts. Ideal for user testing, early sales, trade shows, and crowdfunding fulfillment.

    Yes. We regularly build prototypes integrating custom PCBs, off-the-shelf development boards, sensors, displays, and full firmware, fully functional, not just cosmetic shells.

    That's exactly why we prototype. Every build includes a structured test plan, and any issues are documented with root-cause analysis and specific design-change recommendations for the next iteration.

    Yes. Mutual NDA before any project specifics. We can send ours, sign yours, or work from a mutual document.

    [ NEXT MOVE ]

    Have a product to validate?

    The first conversation is free and runs about 30 minutes. We'll cover what you need to learn, what kind of prototype actually answers that, and what the realistic timeline and budget look like. No deck, no sales pitch.