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Finally hit 2000 degrees on my homemade forge
I've been messing with the burner design on my homebuilt propane forge for months, trying to get a stable, clean heat. Yesterday in my Portland garage, the thermocouple read 2015 F for a solid ten minutes. It was the first time I could reliably get a welding heat without the flame going orange and sooty. What's your go-to method for dialing in a consistent high temp? I'm using a basic Venturi burner setup.
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the_piper5mo ago
Honestly, I've never had much luck messing with the air intake on those Venturi burners. For me, the real trick was all about propane pressure. I kept cranking it up thinking more gas meant more heat, but it just made a dirty flame. I found a sweet spot at a lower, steady pressure that let the burner mix everything right. It sounds backwards, but running it a little leaner got me a cleaner, hotter flame.
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the_drew5mo ago
Yeah, I had the same thing happen with my old burner. I ended up just cleaning the air ports really well (they were totally clogged) and that fixed my sooty flame without even touching the pressure.
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pat_stone2mo ago
Wait, you had a burner with totally clogged air ports and it still ran? That's wild, @mianelson. I would've figured she was done for.
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mianelson5mo ago
Did you try adjusting the primary air intake? I read that a lot of soot comes from not enough air mixing before the flame. Getting that balance right made a huge difference for my setup.
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