If you have spent any time in the world of CNC plasma cutting, you have likely heard the term "sheetcam hot crack" whispered in forums or shouted in frustration across a noisy shop floor. It is one of the most common, yet misunderstood, failures in automated cutting.
But what exactly is it? Is it a software glitch in SheetCam? A post-processor error? Or a physical law of metallurgy fighting back against your torch? sheetcam hot crack
In this deep-dive guide, we will demystify the sheetcam hot crack phenomenon, explain why your parts are failing, and provide a step-by-step roadmap to eliminate thermal stress fractures for good. If you have spent any time in the
A hot crack often occurs at the outro (end of the cut) because the puddle is still liquid. In SheetCam, turn on Overburn. Is it a software glitch in SheetCam
Users blame SheetCam because the software controls the path the heat takes. A generic or "lazy" setup in SheetCam creates a perfect storm for hot cracking:
A hot crack is often a velocity issue. If your machine is set to decelerate abruptly into a corner, the plasma arc continues at full power while the movement slows down. This is the recipe for a blowout.
The Fix: