Uploaded October 2025 | Updated September 2026, 2 weeks ago

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What Is Pressure Casting? 🌪️

Pressure casting is one of the most powerful ways to get professional results but how does it actually work?

Here’s the science:
• By placing silicone in a pressure pot and adding compressed air at 40–60 PSI, the bubbles inside are compressed to a microscopic size.
• Unlike vacuum degassing, which removes air, pressure casting keeps the bubbles but makes them so tiny they don’t affect the surface or strength of your part.
• As the material cures under pressure, those micro-bubbles are permanently “locked in,” leaving you with smooth surfaces and high-quality detail.
It’s a game-changer for makers who want flawless results in their molds and castings.

💬 Have you tried pressure casting yet? Share your results in the comments!


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