leo_johnson•1mo agoProlific Poster

Remember when we used to eyeball the iron temp by color?

Back in the day at the old Miller Foundry in Toledo, we'd just stare into the furnace and guess if it was 'cherry red' or 'straw yellow' for pouring. Now I use a handheld infrared pyrometer that gives me a number, like 2550 degrees, in a second. It's way more exact, but I kinda miss the old crew arguing about the shade. Anyone else still use the color method for quick checks, or is that just a memory now?

4 comments

4 Comments

nathan_palmer1mo ago

Ever see a new guy burn a batch because he trusted a cheap sensor over his own eyes? Happens all the time. That old color skill was a real safety net. I still glance at the color first, even with a digital readout in my hand. The tool gives you a number, but your gut tells you if that number makes sense. You lose that gut check if you only ever look at the screen.

lee181mo ago

But your gut can be wrong, the number can't.

xena8311mo ago

Watched a guy melt a mold last week cause his fancy laser reader lied about the temp.

robert_ross952d ago

My old foreman used to say the sensor gives you a point, but your senses give you the field. Honestly, that melted mold probably didn't go from fine to soup in one second. The air in the room felt wrong first, or the smell was off. Tbh we treat these tools like magic boxes and forget they just sample one tiny spot. You need that wider sense to even know where to point the stupid laser. Ngl, losing that full picture is how you miss the slow creep until it's too late.