Getting the Heat Right for Glass Score Lines
Most infrared lamps are just… wasteful. They throw heat everywhere, but a lot of it never actually hits the mark because the lamp and the material aren’t on the same page. When you’re heating a score line in glass, you aren’t just trying to make the surface hot. You’re actually aiming for specific additives tucked inside the glass. That’s the secret to getting a clean, controlled break every single time.
Dialing in the Spectrum
We don’t do “generic” heat. Instead, we tweak the infrared spectrum so it hits the exact absorption peaks of those glass additives. How? We play around with the filament composition and how we dope the quartz envelope. This shifts the wavelength. When the lamp’s peak output matches the additive’s frequency, the energy dives straight into the glass. It doesn’t just bounce off the surface and waste away. Plus, your machine frame stays cooler because you aren’t flooding the whole area with useless heat.
The Trade-off
Now, here is the catch. When you get this precise with a spectrum, you usually lose a bit of total wattage. By narrowing the band to hit that one specific peak, you might see fewer lumens. It’s a trade. You get heat that’s incredibly targeted, but to keep your line moving at the same speed, you might need a slightly larger lamp or a bump in voltage.
Making it Work on the Floor
Once you get these lamps wired in, placement is everything. Since we’re targeting specific peaks, the gap between the lamp and the glass needs to be tight. If it’s too wide, the intensity drops off, and your score lines start looking inconsistent. I’d also suggest using a PID controller paired with a fast-response pyrometer. These tuned lamps hit their target way faster than your old halogen tubes, and if you aren’t careful, you’ll overshoot the temperature before you even realize it.