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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 essential Design for Manufacturing (DFM) knowledge.

We cover tight tolerances, sharp internal corners, missing draft angles, undercuts, unnecessary cosmetic finishes, exotic materials, poor assembly planning, and more, plus how to become the kind of customer manufacturers actually want to work with. If you want lower quotes, faster production, and better supplier relationships, this video will change how you design.

⏱️⏱️VIDEO CHAPTERS⏱️⏱️

0:00 – Why Manufacturers Go Silent

0:27 – Designs Suppliers Quietly Hate

1:01 – How to Read a Manufacturer’s Reaction

2:57 – Designing Without Choosing a Process

4:21 – The Truth About Tight Tolerances

5:50 – Sharp Corners & Why They’re a Problem

7:12 – Ignoring Draft Angles in Molded Parts

8:12 – The Hidden Cost of Undercuts

9:10 – Overdesigning Cosmetic Surfaces

9:58 – Assembly Strategy Mistakes

11:09 – The Power of Standardizing Parts

12:07 – Avoiding Exotic Materials

12:40 – Manual Processes & Automation Risks

13:37 – The Big Problem: Ignoring Manufacturers

14:40 – The 10,000 Unit Reality Check 👤

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