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  1. mpcoppin

    Grain Refinement

    After learning that grain refinement and normalizing are not the same thing, I was left with the question of how do I refine grain? Unlike some of you who know what you are doing, I am confident that I regularly overheat steel when forging. I don't do it on purpose, I'm just not that good at...
  2. mpcoppin

    Oven Controllers

    I’m looking at a HT oven (probably a Jen-Ken) and wondering if it’s worth the $$ to pay for the controller upgrades. What do y’all have? Does anybody have one of the 3 button outfits?
  3. mpcoppin

    Possibly stupid question about plate quenching.

    Background before the question: I have been making kitchen knives lately. Mostly out of 80CrV2. I usually have a spine thickness around 0.10” and I grind the edge down to about the thickness of a dime (0.05”) pre-HT. I’ve been quenching in warm canola oil with pretty good results but I get the...
  4. mpcoppin

    Galvanized Container For Quench Oil

    Sometimes you get an idea that you think is brilliant but then wonder, “If this is so brilliant, why aren’t other people doing it?” Today I had one of those. I saw this this galvanized pitcher and thought I could use it as a quench tank. I’d pour the oil from my plastic jug in to the pitcher...
  5. mpcoppin

    Learning from mistakes.

    I screwed up a bowie I was making from a rasp. So... I broke it to look at the grain. Would you say this is course grain?
  6. mpcoppin

    Baffle Pipe Thickness

    I’m planning to get a section of pipe to stick in to my forge and use as a baffle (or muffle, or whatever you call it) when I’m heat treating and I was wondering what kind of wall thickness people have been using. My forge is an 18” 3 burner (venturi) with a 4 x 6 opening and I’m thinking of...
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