I want to design my outdoor cooking product so that it does not suffer the same problem with cracking (firebox or shell/body). If this means 'over-engineering' then so be it.
I've heard from ceramics studios saying that if it is kiln-fired it will not crack. Then I read about cracking issues with the Big 3 and think - if they can't resolve it then how can I?
It has put me off approaching any Chinese manufacturers of Kamado/ceramic grills and made me want to explore the methods and materials used in Komodo Kamados, and closer to home, the use of refractory cements and screeds from companies such as Vitcas: https://www.vitcas.com/
Here is part of a text I sent my business partner earlier today:
My greatest fear is the [product] cracking. To me it is the single biggest thing that could draw negative reviews, complaints and returns and damage our reputation and credibility in the market. I swear I have nightmares about It!! I do have some ideas, but I need to test my thinking with those who know about such things, hence my reaching out to some sources recently.
Regards,
David