Cutting ultra-thick glass is a nightmare for your equipment. If you’ve ever tried it, you know the feeling—the glass just fights the cutting wheel. You end up leaning into the machine, pushing harder and harder just to get a decent score. The result? You kill your blades in record time. We found a way around this by using shortwave infrared (IR) lamps to pre-heat the path right before the cut. Here is why that works. Most heaters just warm up the surface, which doesn’t do much for thick plates. But shortwave IR actually sinks deep into the glass. By targeting the exact line where the cut happens, we can ease the internal tension and make the material a bit more “giving.” It’s not about melting the glass—it’s just about making it stop fighting back. When the glass is pre-heated, the cutting wheel just glides. You don’t have to wrestle with the machine anymore. Since there’s way less mechanical stress, those tungsten carbide wheels actually last. It’s a huge relief not to be replacing blades every few hours. But, there’s a catch. These lamps put out a ton of heat. If your focal point is off or you leave the heat on too long, you’ll hit the glass with thermal shock. One minute you’re cutting, and the next, the whole plate just cracks on its own. It’s a disaster. To make this work, you have to sync the lamp’s movement perfectly with the cutter head. And don’t forget the cooling system. If you don’t spec it right, the heat buildup around the housing will literally melt your wiring. The trick is to wire everything into a precision PID controller. It keeps the temperature in that sweet spot—warm enough to soften the glass, but not so hot that you ruin the piece.