Essengold's Blog & Tech Sharing

A prototype has one job: to tell you the truth about your design before you spend real money on tooling. But not every prototype tells

Insert molding builds a metal-and-plastic part in a single operation. A metal insert goes into the mold, plastic is injected around it, and the result

A part clings to the core during ejection, drags across the steel, and comes out scuffed — all because someone shaved a half-degree of draft

Most shops running a 5-axis machine are actually running two different processes—sometimes without realizing it. The hardware is identical: the same trunnion, the same spindle,

A prototype bracket cracks clean through at the bend line, and the whole build slips a week while you re-source stock. Picking the right sheet

A modern car is roughly 15 to 20 percent plastic by weight and close to 50 percent by volume—and that ratio keeps shifting upward. None