Getting the Heat Right for Glass R&D
Most heating elements are built to be uniform. They give you the same heat everywhere. But if you’re annealing wine glasses or messing around with new glass materials, “uniform” is actually a problem. Think about a glass stem. The thick base needs a different kind of heat than the delicate rim. If you treat them the same, you get internal stress. Then you get cracks. We don’t just tweak the size of the heater. We focus on the power density—basically, putting the heat exactly where it needs to be. Mapping the Heat Here’s how it works: wattage per centimeter dictates the heat flux. By playing with the filament winding or the thickness of the quartz tube, we can build “hot zones” and “cool zones” into one single unit. It’s a huge win for your process. You can blast the thick base with high energy while keeping the thin rim from melting or warping. You’re finally in control of that cooling curve. The Give and Take We use high-purity quartz because it lets infrared light pass through without a fight. But there’s a trade-off. If you want a tiny heater that ramps up heat incredibly fast, you’re putting a lot of stress on the filament. Push the density too hard in a short tube, and the lamp won’t last as long. It’s a balancing act between how fast you need your parts finished and how often you want to swap out your lamps. No Catalog Boxes I hate the idea of forcing a client into a “standard” part from a catalog. That’s not how R&D works. Whether you need to match an old power supply or you’re testing a totally weird experimental glass composition, we can adjust the voltage and wattage to fit. You tell us the temperature map you need. We build the heater to match it. No guessing, no “hoping for the best”—just a tool that actually does what you need it to do.