CENTERMold

Keeping wall thickness consistent helps prevent defects like warping or sink marks. Uneven thickness can cause cooling issues, leading to internal stress and even cracking. Ideally, wall thickness should be between 2-4 mm, but this depends on the material.

A draft angle helps parts release smoothly from the mold without damaging the surface. Without it, the part may stick to the mold, causing scratches or warping. Typically, a draft angle of 1° to 3° is recommended, but it can vary based on the material and part geometry.

Undercuts complicate the mold design because they prevent a straight pull during ejection. They often require extra features like side actions or lifters, which add cost and complexity. If possible, try to avoid them.

Ribs are great for adding stiffness without increasing wall thickness. To avoid sink marks and warping, the thickness of ribs should generally be about 50-60% of the nominal wall thickness. Make sure they’re evenly spaced and properly aligned with the load path.

Sharp corners can lead to stress concentrations, making your part more prone to cracking. To improve both strength and moldability, try to round off corners where possible. A radius of at least 0.5 times the wall thickness is a good rule of thumb.

Inserts like threaded nuts are great for adding strength to assembly points. You can either overmold the insert during the molding process or press-fit them later. Overmolding is often preferred for durability, but it requires precise mold design to hold the insert in place securely.

Absolutely! We work closely with specialized suppliers to produce custom threaded nuts tailored to your exact specifications. There is a minimum order quantity (MOQ), but we can ensure high-quality parts that meet your needs.

Vents allow trapped air to escape during molding, preventing defects like burn marks or incomplete filling. The placement and size of vents depend on the material and part geometry, but typically they are around 0.02 – 0.05 mm deep. Our mold designer will fine-tune these based on your part.

Yes, multi-cavity molds are common for high-volume production. However, keep in mind that all parts produced in the cavities should be identical in design. Differences in wall thickness or complex geometries can cause uneven filling, leading to inconsistencies in quality.

Hot runner systems are excellent for reducing material waste and improving cycle times, especially in high-volume production. However, they’re more expensive and complex to maintain. Cold runner systems are simpler and more cost-effective for lower volumes but produce more waste material.

For transparent parts like lenses or covers, surface finish is crucial. Mold polishing must be carefully considered, and you may need to use specific materials with good optical properties, such as PMMA or PC. Avoid ribs or features that can create internal reflections or distortions.