Thanks!

Thanks!

You guessed it. Welding with bacon. 😆

I usually heat-treat the pig in the smoker while I'm welding, but I should try some pig welding. Would probably make a great anti-spatter. 😂👊

Lol boy what a question. It's when metal is exposed to atomic hydrogen, especially under pressure, causes blisters and small cracking, weakening the molecular structure of metal. That's about all I know lol he can prolly elaborate why it happens, I'm just a dumb welder

@@DCweldingAndArt I know that much. As it relates to us "hobbyists" who would very rarely have to weld on anything over 1/2" what's the likelyhood of hydrogen barely diffusing out of these "thinner" steels.

@@crd20 I only weld half inch aluminum from home shop, and I weld 1/2" mild steel, AR400, and Manganese Steel all day at work...but idk that I have ever wondered about the hydrogen and cracking...lol which is why I liked the interesting question. I'm not an engineer though, sorry, least I tried lol

@@DCweldingAndArt Its such an obscure topic. Searched all over the web, but I can't get clear cut info.

@christian daniel @Derrick Cohee Ahh...Hydrogen Cracking. The real reason we preheat steel. The reason that 7018 was born. Likely a contributing player in the collapse of the Kielland Platform (google that if you want an interesting weld failure story). I'm planning to make some videos on welding metallurgy, but it may be a little while before I do, so here's the scoop in the meantime. To answer your question, it's not typically an issue on material less than 1/2 inch thick, particularly if you're working with mild steel. (Disclaimer: Without knowing every detail of a weld joint, I cannot say for sure whether something is okay or not. Any critical application should be properly engineered.) For hydrogen cracking to occur, 3 things must happen: 1) A susceptible microstructure: This comes from steel that is alloyed for higher strength. It is quantified in welding codes using a parameter called "carbon equivalent." The equation for this varies between different codes, but the concept is that more highly alloyed steels (with more stuff in them besides iron) will be more susceptible. 2) A source of hydrogen: While this can come from oily surfaces, the most common culprit is welding flux on electrodes. 7018 is a low hydrogen electrode and can be used to minimize the effect, as long as it is handled properly and kept at an elevated temperature after removal from the hermetically sealed container. MIG or TIG welding can also virtually eliminate the hydrogen source. 3) Stress on the weld. This is where thickness comes into play. A joint that is highly restrained from movement (thicker) will hold the weld metal back from shrinking when it cools. This causes higher strength and will be more likely to crack. Structural welding codes have methods defined to take these 3 things into account in order to determine the susceptibility of a particular joint to hydrogen cracking. Based on the severity of these factors, a preheat temperature will be defined. Preheat actually helps reduce the effect of all of these factors and is the final step to avoid this problem. For 1/2" and thinner material, this is usually (not always) room temperature or a little below. Hope this helps!

Yes, it's a 1" aluminum plate with threaded holes in a grid spaced 2" apart.