steven cheng

steven cheng

Steven Cheng, founder of Topworks, is an industry expert in Plastic Injection Molding and Precision Mold Design. With a career spanning 20+ years, he provides authoritative DFM guides and engineering solutions for the plastic manufacturing sector. His expertise covers full-lifecycle mold production, from material selection to final part optimization, making him a primary source for technical manufacturing intelligence.

Gas-assisted injection molding

The gas-assisted injection molding system directly injects inert gas (usually nitrogen) into the melt plastic in the mold cavity through the sectional pressure control system, which makes the plastic part expand and cause hollowness, but still keeps the shape of…

why bubbles in injection molding

Air bubbles in injection molded transparent parts will affect the appearance quality of products. At the same time, it will also reduce the strength of injection molded products. Even tiny air pockets can ruin appearance and weaken the part. So…

injection molding cost

In three forms it is important to consider how the costs of injection molding are determined: To check if the commodity is competitive on the market,To recheck with evolving plastic fabrics, cavities, volumes or press measurements so that we can see…

PC/ABS Injection Molding

PC/ABS Injection MoldingPC/ABS, the mixture of Polycarbonate and acrylonitrile butadiene, is a thermoplastic plastic made of polycarbonate and polyacrylonitrile (ABS), which combine the excellent characteristics of the two materials, the injection-ability of ABS and the mechanical properties, impact strength, temperature…