Start Roto #9 | Validate without a factory — from prototype to safe outsourcing — LIVE

What you gain by watching

• Learn how to validate your product idea before investing in molds, factories, or expensive tooling, avoiding losses with simple methods like wooden prototypes or 3D printing.
• Discover how to apply usability testing in rotomolding — from paper to the factory floor — to ensure your part works in real use, not just on paper, and wins over the line operator.
• Learn how to protect your business when outsourcing: what to require by contract, how to set non-negotiable quality standards, and how to choose partners without becoming hostage to suppliers.

Episode chapters

1. 1

   How to validate your idea without having your own factory: from paper to market

   We opened the validation stage of Start Roto with a direct provocation: how to take a product from paper without relying on your own machine and without skipping steps due to haste or anxiety. In this first episode, we showed the path from conceptual validation to prototype and safe outsourcing, reinforcing that well-defined partnerships and prioritized steps are what take the idea to market — even without manufacturing structure.

   We don't know, we don't own the truth

   ▶ Watch at approximately 2:52
2. 2

   Prototype validation: how to test your idea before spending on molds and factories

   Before any heavy investment in factory or tooling, the question everyone needs to answer is: how do I know if my product makes sense in the market? In this episode, we navigated through two essential stages — we started by showing how to validate shape, size, use, and value perception with simple prototypes made of wood, plaster, or 3D printing, and then talked about the path to safe outsourcing, avoiding the common risks we see clients facing out there. Throughout the conversation, we talked about the classic mistake of not considering material contraction — about three to four percent — and highlighted that, to explore the market, it's not always necessary to make the final part in plastic or rotomolded; the important thing is that the prototype provides insights, not that it's perfect.

   The prototype doesn't need to be perfect; it needs to provide insights

   ▶ Watch at approximately 7:55
3. 3

   When the prototype meets the client: why perception matters more than the part

   In this section, we navigated practical prototyping decisions — from mold material to 3D printing, which is arriving strong even for large parts made in stages — until reaching the crucial point: validation with who really matters. We told how the logic of software usability testing, where the end user explores the interface and reports difficulties, applies directly to rotomolding: hand the part to the client and observe if they understand the product and, mainly, the value proposition — what justifies paying 2X for our product instead of 1X at the competitor. And we highlighted the essential tip: note the client's initial perception, for that's where the difference between a normal adjustment and a real alert lies.

   The client will understand your product at first, and most importantly, they will understand the value proposition that product has.

   ▶ Watch at approximately 13:22
4. 4

   First impact decides: how the client's visual reaction saves the product

   On the factory floor, it's not enough for the product to be technically perfect: it's the client's first look that reveals if they understand the value and usability of the solution. In this episode, we talked about how visual impact and immediate reactions — like pizza eaten with the eyes or the box the operator throws carelessly — point exactly where to adjust, whether it's the depth of a handle or the angle that makes the hand slip. Finally, we told the real case where validation done with the end user, testing the part on the production line, turned perceived details into concrete improvements that no one had verbalized.

   We always followed the client's first impact there. Then we'd throw it, put it on the production line to see if the product would really work or not.

   ▶ Watch at approximately 18:25
5. 5

   Validation on the factory floor: why real use beats ideal use in rotomolding

   When we took our developed parts and boxes to automakers, the first thing the team did was assemble, throw, and test them in front of us — and that's how we learned that no one is better than the laborer's hand to validate a product, because they are the ones who will use it daily, without the care we imagine, but with the agility the line demands. We saw this real difficulty and understood that it's useless to validate in ideal use; it has to be in real use, like those assembly lines where practicality was fantastic and each innovation appeared before us. And the big adjustments? Sometimes you imagine a product in your head and the client asks 'why isn't this like that?' — that happened to us with an app, when a user pointed out a central change that was a headache but made much more sense; and even in Embraer's wind tunnel, we saw that many of today's airplanes had nothing to do with the initial idea, because real validation changes everything. We talked about how fundamental it is, armed with prototyping data, to decide whether you go back to the drawing board, adjust the prototype, or give the OK for production. Validation with those who use it is the difference between a product that works on paper and one that truly solves on the factory floor.

   No one is better than the laborer's hand to really test the product, because they are the ones who will use the thing.

   ▶ Watch at approximately 23:34
6. 6

   The Frankenstein mold and the Fiat bid: when the line operator outranks the manager

   When we won a bid at Fiat, we agreed to buy a mold that a competitor had already developed 90% — and that's when a nightmare began with eight trips to the automaker, with each involved sector (Magneti Marelli, FTP, and other companies) asking for a different change in the prototype. Until we got tired of scattered opinions and called a meeting with all the engineers, collected each briefing, wrote everything down, and made a single part — which, although patched and ugly like a Frankenstein, was approved by all departments, who signed off on the project. The part served as the basis for the definitive aluminum mold, and the lesson was clear: it's useless to listen to one or two people as absolute truth; the larger the sample of opinions, the better the result — and, in the end, who really validated the part was the assembly line operator, not the supervisor.

   Who defined the part was not the supervisor, but the operator. The line doesn't stop. They are the ones who will use it.

   ▶ Watch at approximately 28:47
7. 7

   Who sells the airplane is the pilot: proof that listening to the user changes the project

   On the factory floor, many people develop products looking at the technical drawing and forgetting who will operate the part daily — that's exactly what led us to tell the case of the EMB-145 development at Embraer, where the pilot, right after the test flight, went straight to the press room to talk to buyers without anyone's interference, because those who live the product know the flaws the project hides. We showed how this logic of validation with the real user solved a classic logistics problem: rubber protection parts wore out in a few trips and scratched brake discs on the assembly line, and only switching to a plastic structure — tested and approved in practice — eliminated part rejection. By listening to feedback from those who use it, we classified adjustments and separated the ideal product from the economically viable one, turning the concept test into a clear compass for costs, prototype, and operation destiny — because, in the end, the client doesn't buy what makes sense in engineering; they buy what works in their hands.

   Who sells the first airplane is the pilot… they talk about all the problems, the difficulties they're having.

   ▶ Watch at approximately 33:58
8. 8

   Validate the concept before the material: the lesson of the milk can

   In this section, we talked about the correct order when developing a product: first, prove the concept with any available material, like making a metal cart to validate the idea of five wheels; only after approval do we move to material validation, with all resistance and application tests. We told the real case of the milk can we manufactured, where changing the resin supplier caused volume variations, and we remembered how the plastic model needed to replicate the structural characteristics of the metal, including the lid that supported the weight of someone stepping on it, something that required mold corrections. Additionally, we discussed the importance of validation with the end client, asking about value perception and price, because spontaneous reactions like 'let me know when it launches' are great, but the essential is to discover if they would pay and how much, since that direct answer guides our costs and positioning.

   The important thing is to prove the concept. A five-wheel cart works, but whether it's metal, plastic, or anything else is indifferent. So validate the concept first.

   ▶ Watch at approximately 39:00
9. 9

   Ask the client how much they would pay: the market responds with signals that change your spreadsheet

   On the factory floor, the doubt is cruel: am I charging the right price? We told how a simple — and direct — question to the client reveals if the value proposition is perceptible and can even turn the Excel sheet upside down, like the case of the service the buyer said would be worth five times more. We showed that validating in the market goes beyond 'I liked it': it's hearing the imagined price, feeling the value perception, and even receiving change requests — and only after going through these steps do you outsource safely.

   We still have a lot to learn — "we don't know, we're not owners of the truth

   ▶ Watch at approximately 44:05
10. 10

    Outsource without validating the partner? The path to not becoming hostage to the supplier

    There comes a time when every business needs to grow and outsource production, but how to do that without falling into traps that cost dearly? In this section, we showed that the key is prior validation and minimal mastery of the product and process; we talked about the risks of choosing a partner without history or technical expertise, and revealed how a clear briefing and technical monitoring avoid headaches — because, as we told in the case of a client who couldn't see a defect in their own part, knowledge is what prevents becoming hostage to who produces.

    It's useless to have a partner that's reliable, a partner that's good, but you don't have mastery of the product, the product and the process.

    ▶ Watch at approximately 49:59
11. 11

    Two tons of scrap: the cost of demanding without knowing the process

    On the factory floor, blind trust can be costly: a client switched rotomolding suppliers and, by demanding a standard they had already validated, ended up with two tons of material turned into scrap, with no return. But the problem wasn't just the demand — it was the lack of technical knowledge to evaluate if the new partner really knew what they promised, creating a dangerous game where what is 'normal' for one can be a silent loss for another. The way out, we revealed, is to surround yourself with information: whether by knowing the limits of the process or leaning on those who understand, like Portal does with its courses — because, as we saw in Anderson's case, what seemed acceptable became a defect he learned to fix in a few days.

    When you don't know a process, any truth seems absolute

    ▶ Watch at approximately 54:59
12. 12

    Training that comes to you: how we closed a deal and avoided losing 70% of material

    When talking about training, many people face the difficulty of relocating the team, so we showed that it's possible to adapt our content and go to the listener's company, analyzing the product, process, and local problem. Then we entered the negotiation alert with service providers: we told that it's necessary to bring to the table a validated prototype and defined deadline, but also guarantee by contract the return of material, because we know of a real case where a ton of raw material became only three hundred kilos of parts — we lost 70% of the material, and that shouldn't be acceptable.

    Sending a ton of material for the folks to do the work there, and only three hundred kilos of parts came back

    ▶ Watch at approximately 59:59
13. 13

    Lead gray box: when the supplier improvises and the contract becomes your safety net

    In this section, we delved into the invisible risks surrounding those who outsource rotomolding without a well-structured contract. We told the real case of a client who received a sudden 20% increase in labor and the story of a batch that arrived in the wrong color — lead gray instead of Antarctic gray — compromising an entire order and causing two weeks of headaches. We showed how the lack of clear agreements opens space for improvisation, delays, and unilateral changes, and how a detailed contract, with fixed price and material specifications, is the essential tool to turn unpredictability into safety in supplier relationships.

    What if the employees are made of plastic?… It's two weeks of headache.

    ▶ Watch at approximately 1:05:09
14. 14

    Contract, standard, and the color that changed: the trio that avoids headaches in rotomolding

    When it comes to buying and selling parts, leaving everything to 'eye' or verbal agreement can be costly: we talked about the importance of contracts that guarantee minimum supply and deadlines for both sides, and told the real case of a factory that lost the exact color tone because it didn't keep the first reference part — while the client asked for 'water tank blue' and received 'sky blue'. The solution, as we showed, is to document the acceptable with photos, videos, and mainly keep the physical sample, because even the most modern camera doesn't replace the real standard when validating finish and tone.

    Man, I'm asking for water tank blue, and you're delivering sky blue?

    ▶ Watch at approximately 1:10:19
15. 15

    Safe outsourcing: what to do when the supplier delivers out-of-spec parts

    We talked about how to project costs and margins after closing a contract with a production partner, calculating minimum volume, payback, and break-even point to validate the operation. But we remembered that outsourcing eliminates headaches and brings new ones: without periodic inspection and technical monitoring, quality fluctuates between batches, and it's at that moment you activate the technical department to investigate the problem before the business runs loose.

    Outsourcing eliminates headaches, but brings new ones. Knowing the risks protects your business.

    ▶ Watch at approximately 1:15:21
16. 16

    When chemical toilet waste becomes a headache in extrusion

    On the factory floor, the quality of recycled material can hide traps that only appear during processing. We told the real case of a batch of chemical toilet waste that simply wouldn't extrude: the supplier guaranteed the origin, but the part had vacuum-formed sides and, worse, PVC pipes ground together — contamination that made the entire material unusable. We had to rack our brains to discover the source of the problem and replace the batch, and that led us to reinforce the importance of close technical monitoring, whether in separating waste, choosing reliable suppliers, or maintaining a plan B to avoid stopping production or soiling the company's name. After all, as we said, 'we never give guarantees, but we always take care' — and we advise those who hire to visit, observe, and never let the process run loose.

    The worst was that the pipe inside was PVC; the guys were grinding it together. Man, contamination. Then they lost all the material.

    ▶ Watch at approximately 1:20:21
17. 17

    Outsourcing production is the shortcut to validate your product without buying a machine now

    Many people get stuck on the idea that they need their own factory to start, but we talked about how outsourcing, especially in the beginning, solves product validation, market knowledge, and low initial investment — with the agility to get the product on the streets quickly while your own machine hasn't arrived. We also explained how to avoid headaches with contracts and patents, and called the community to actively participate, including sending real cases of porosity in aluminum molds so we can build solutions together with you.

    So we want a united community, we want to know each other, know what we can collaborate on so everyone evolves together.

    ▶ Watch at approximately 1:25:30
18. 18

    Why outsourcing before buying your own machine might be the safest path

    At the end of the episode, we returned to a warning that hovers over those starting out: how to size the company, the machine, and the team before investing heavily? We showed that initial outsourcing is a kind of probationary stage — a path to know the market and only then structure the business safely. And we also left the hook for the next program: the law that already obliges large companies to use recycled plastic and that will soon knock on the door of small ones — with myths being broken about the quality of recycled material.

    We're going to break this myth that recycled material is junk in your production.

    ▶ Watch at approximately 1:30:58
19. 19

    The episode ends, but the conversation continues: a hug to those who follow from the early hours

    We closed the episode's cycle with the gratitude of those who know the audience goes beyond business hours — Flávio, from Portugal, is living proof that the factory floor doesn't sleep and our conversation crosses time zones. Even with the clock striking two in the morning, the final message is of community: technical exchange has no time to happen and Portal remains open doors for those who join.

    Flávio from Portugal, always following us there, sometimes even— From now on. Two in the morning.

    ▶ Watch at approximately 1:36:02