<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Steve Cole:
I'm not positive what made mine crack. I don't think it was due to outside/ambient temps. I live in eastern NC and never cook at temps lower than 20F which I don't think is that extreme. It gets colder, but I'm not out grilling in it. I figure either high heat cooks eventually caused enough stress that it cracked or maybe moisture in the porous ceramic that either froze or expanded when it got hot. It sat uncovered most of the time, got rained on, snowed on. They do absorb water. You can see it hissing out of the top. I still use it, but only for long, low temp cooks. </div></BLOCKQUOTE>
I have repaired a couple vintage Japanese claypot Kamados that had the plug style botton damper plugs. They all had cracks that radiated from the bottom of the base, through the vent opening and up the base to the top lip. When I was researching repair techniques in the Kamado.com Archives, Richard Johnson claims to have invented the slide damper to replace the plugs, that when inserted into the base to choke the coals caused the base to contract thus causing them to crack. There were a lot of posts regarding the same cracking described, and judging from the ones I repaired I can go along with that theory.
Except- Like Steve Coles BGE, I too, had one that cracked exactly as he described. I was doing a reverse sear on a Tri-Tip, when I happened to look out my kitchen window and mine had a large V shaped crack expanding so much that I could see white ceramic! I freaked! All I could think of was this thing splitting open and catching my cedar deck on fire and it spreading to the house!
It was an old Large that I got for free off craigslist, I'd used it for a couple years before it cracked. I had replaced the old style hinge, added the stainless steel slider, DMFT and platesetter. I figured I'd gotten my moneys worth out of it and tried to repair it like the claypots, but the furnace cements, JB Weld would not adhere-the ceramic isn't that porous, everything I threw at it flaked off.
So I bought a demo Egg at the PNW Eggfest, and brought a couple of my refurbished Japanese Kamados to display. The VP of Sales for BGE stopped by and was asking me about them and I told him of mine that had cracked. He gave me his card, told me to call in a week and he would try to fix me up. Couple months later I get a call from my local BGE dealer and there was a brand new bottom with my name on it! Free!
It's that kind of CS that will forever make me a loyal egghead-its just another toy in the box, but Weber CS has taken just as good care of me in everything that I've had a problem with, so my Desert Island grill would definitely be a Weber!