Alpine Mold on Instagram: "⚠️ Tired of those weld lines ruining your product’s surface? They’re not just cosmetic — weld lines can weaken your part, affect sealing, and even cause functional failure. So, why do they appear? 💡 When two or more melt fronts meet inside the cavity without enough temperature or pressure, they fail to fuse completely — leaving that visible weld mark. At Alpine Mold, our engineers optimize: ✅ Gate position and flow balance to ensure proper melt convergence ✅ Mold vent