Vacuum improves conditions, but it does not automatically fix geometry, viscosity, fill-path, or timing problems that still trap air inside the part. In most factories,

Tall components create hidden walls and air pockets that behave very differently from flat boards, which is why localized bubble problems often appear even when

Deep cavities trap air differently from shallow ones, so void problems usually point to a combined issue in fill path, viscosity, venting, section depth, or

A 2K line that ran well before a material change can still lose ratio stability because density, viscosity, feed resistance, or purge assumptions changed even

Uneven hardness after potting usually means the part was exposed to non-uniform ratio, mixing, temperature, section depth, or cure timing conditions across the same production

Brittle encapsulation usually means the resin was pushed into a stress condition that the product could not tolerate. The cure may have gone too hard,

Slow cure in epoxy potting is often a process-window problem rather than a mystery chemistry problem. When cure timing drifts in production, the likely causes

A soft center after potting cure usually means the inside of the mass never reached the conditions needed for a complete reaction. The surface may