Tymmold

LSR flashes into gaps a few microns wide, yet trapped air causes burns and short shots. Learn how to size vents, when to use vacuum, and how to diagnose venting defects.

Paying for a mold doesn’t guarantee you control it. Learn the tooling ownership, storage, maintenance and transfer clauses every OEM contract with a molder should include.

Paying for an LSR mold in China doesn't automatically mean you control it. Learn the ownership, maintenance, and transfer clauses every OEM buyer should put in writing.

Scale buildup in mold cooling channels gradually degrades temperature control precision — and part quality with it. Learn the warning signs and inspection intervals.

In silicone overmolding, interference fit depends on matching LSR shrinkage against substrate tolerance. Get the calculation wrong and you get loose or stressed parts.

When hot runner valve gates open and close out of sync across cavities, the result is often gate marks and color drift that look like unrelated defects. Here's why.

Molding silicone parts with complex internal channels — like catheters — creates specific core-pulling and side-action design challenges. Here's what to look for.

Mold release agent residue can silently sabotage secondary overmolding or adhesive bonding steps. Compare release strategies and release-agent-free mold design.

A silicone part's Shore A hardness can shift after molding due to storage conditions — sometimes enough to affect incoming inspection results. Here's why.

For medical silicone components, mold surface finish is often discussed as a cosmetic or aesthetic specification — how glossy or matte the finished part looks. In reality, for any part that will be sterilized and used in a clinical setting, surface roughness is a functional specification with direct implications for contamination risk, and getting it wrong can mean a part that passes visual inspection but fails to reliably clean and sterilize in actual use.