Finding Tiny Metal Flaws with a Magnetic Crack Detector
Picking up a magnetic crack detector might seem like overkill for a casual hobbyist, but for anyone dealing with high-stress metal parts, it's a total lifesaver. You can't always trust your eyes when you're looking at a piece of steel that's been through the wringer. A bolt might look perfectly fine on the surface, but underneath, there could be a microscopic fracture just waiting to snap at the worst possible moment. That's where this bit of kit comes in. It's essentially a way to see the invisible, using the power of magnetism to highlight where a metal part is starting to give up the ghost. ...