David Jasiewicz
Product design and development with Rebel Engineering
I help first-time physical product founders launch faster and smarter by eliminating costly design and manufacturing mistakes before they ever reach production.
Where to listen?
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Episodes
009 The expensive mistake in every overbuilt prototype 06.04.2026 8:20
Most people think making a product stronger automatically makes it better, but that’s not always true. In this video, I break down the difference between overbuilding and proper engineering, and why blindly adding strength can actually hurt your design.
008 Engineers vs Mechanics: The Real Problem With New Cars 02.04.2026 11:50
Why are modern cars so hard to repair? In this podcast, I break down the real reason behind the tension between engineers and mechanics, and why it’s not as simple as “bad design.”
007 The Problem with Choosing the Wrong Engineering Major | Engineering vs Engineering Technology 31.03.2026 18:50
Engineering vs Engineering Technology, what’s the real difference, and which degree is right for you?
006 Sunken cause fallacy. Why quitting and starting over is hard 27.03.2026 9:06
The sunk cost fallacy can quietly derail engineers, inventors, and product developers. When you’ve invested months (or years) into a design, walking away can feel impossible, even when a better solution exists.
005 Is Your Product Idea Good? It Must Pass These 5 Tests! 26.03.2026 19:41
Have a game-changing product idea but worried no one will buy it? In this video, I break down the 5 real-world tests I’d use to validate a product idea before investing serious time and money based on decades of experience designing, developing, manufacturing, and selling physical products. You’ll learn how to prototype quickly, test demand without looking like a scam, gather meaningful customer f...
004 Everyone Gets This Wrong - Overbuilt vs Overengineered 23.03.2026 13:42
✅ Get my free product development Cheat Sheet: 👉 https://shorturl.at/5qSGX ✅ www.rebeleng.us What’s the real difference between overbuilding and overengineering? In product design and mechanical engineering, making something stronger, heavier, or more complex than necessary can quietly ruin usability, cost, and market success. Using real-world examples—from shovels and vacuums to smartphones an...
003 Product design decisions that manufacturers secretly hate 19.02.2026 15:51
✅ Cheat sheet: 👉 https://shorturl.at/5qSGX www.rebeleng.us - SCHEDULE A FREE 15-MINUTE FEASIBILITY CALL In this video, I break down the most common product design mistakes that quietly increase costs, extend lead times, and push your job to the bottom of the priority list. If you're developing a physical product, working with CNC machining, injection molding, casting, or fabrication, this is ess...
002 the harsh reality of scaling your product from prototype to production. 18.02.2026 13:12
✅ Cheat sheet: 👉 https://shorturl.at/5qSGX rebeleng.us - Your top location for product design and development resources. If your prototype worked perfectly on your desk, that’s exactly why it might fail in mass production. In this video, I explain why prototypes lie, and how manufacturing exposes every shortcut you took. We cover the biggest mistakes first-time physical product founders ma...
001 The $10,000 Product Design Mistake Nobody Talks About 17.02.2026 15:45
✅ Cheat sheet: 👉 https://shorturl.at/5qSGX rebeleng.us - Your top location for product design and development resources. Discover the shocking truth about how a single design mistake can lead to a staggering loss of $10,000. In this video, we'll explore the common pitfalls that can have a significant impact on your bottom line. From user experience to conversion rates, we'll dive into the world...
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