Vacuum Casting vs. CNC Machining Accuracy: How Precise Are Silicone-Mold Parts Compared to Machined Plastic Parts?
One order of magnitude apart on paper — but the real story is where casting variation comes from, and when ±0.1 mm is more than good enough. Two identical housings — one cast from a silicone mold, one CNC machined — measured against the same drawing. When you order plastic prototype parts, two numbers quietly…
