TIL that letting my furnace ramp up slower avoids hot spots

Stella Roberts · 2026-02-25T05:40:24.823773+00:00

Used to crank the heat fast to save minutes. Melt would have uneven sections. Started a slower warm-up routine last month. Now the pour is consistent every time. Fewer scrapped casts.

the_kim5mo ago

Nah, you’re right. My buddy Dave wrecked two entire batches last year before he figured this out. He’s the type who has to do everything fast, like it’s a race. He kept getting these weird hard spots in the middle and weak edges. Finally, I told him to just give it ten more minutes on the ramp. Now he hasn’t had a bad pour in months. He still complains it takes too long but he’s not wasting metal anymore so it’s worth it.

10

anthony_campbell888mo ago

Slow and steady wins the race, makes sense.

7

jakeh428mo ago

Guess my old 'time saving' method was just a great way to waste metal instead. Who knew not rushing could actually be faster?

5

blair_martin8mo ago

anthony_campbell88 might be onto something here for once.

8