Silicone Mold Development: From 3D Drawing to Production

Here is something most buyers do not realize until they have placed three or four orders. Silicone Mold Development matters more than most people think. We learned this the hard way, over years of working with brands across 30+ countries.

Where Things Go Wrong

Surface texture on a mold transfers directly to the product. A polished mold gives a glossy finish. A spark-eroded surface gives a matte texture. Clients often ask for a specific feel without realizing it all starts with the mold surface treatment. We provide sample chips so you can feel the difference before committing.

The Details Matter

Draft angles exist for a reason. Silicone is flexible, so you can get away with less draft than with plastic, but zero draft will still cause tearing and stretching during demolding. We recommend at least 1 degree per side, more for deep parts.

Key Takeaway

CNC and EDM are both used in mold making, and they do different jobs. CNC is faster for large, flat surfaces. EDM is needed for sharp internal corners and details that a cutting tool cannot reach. A good mold shop uses both, not just one.

If you are working through these decisions for your own product line, we are happy to talk it through. Lemeng Silicone has been manufacturing custom silicone products for over 20 years, and we have seen pretty much every scenario. Drop us a line and we will give you an honest assessment, even if you end up working with someone else.