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Manufacturability issues often start with mechanical design decisions that seem reasonable in CAD, but become difficult, expensive, or hard to control once tooling begins. I always try to be involved in DFM discussions early in the development process because, by the time a tooling issue shows up, the decision that caused it was usually made weeks earlier in CAD. A thick rib can look harmless at first, but later become a sink, warpage, or cosmetic concern. A tolerance may be

The PCB assembly looks good. The solder joints look pristine. Every inspection and end-of-line test passed. Then, months later, the module fails because of a short circuit. How? Hidden inside what looked like a good assembly, tiny conductive filaments may be growing slowly from tin-rich plated surfaces. They are called tin whiskers. Almost invisible, unexpected, and conductive enough to bridge two nearby conductors, they can create the kind of short circuit that feels mysteri

They can be the difference between an acceptable plastic part and a well-engineered one. Used well, ribs can help improve: • Structural stiffness • Load paths and stress redistribution • Packaging and component clearance • Mold filling and flow balance when coordinated with gate location • Fiber orientation in glass-filled materials • Panel flex and vibration behavior, including shifting natural frequencies • Assembly support, alignment, and interface protection• Overall manu

Select the best plastic is about finding the one that answers the real requirements of the part. · You need a good appearance and easy processing? ABS may be enough at a low cost. · Need better impact resistance or toughness? PC may be a better direction, if the added cost and processing requirements make sense. · Need a balance of appearance, toughness, and manufacturability? PC+ABS is often a practical compromise. · Need more strength and stiffne