Quote Originally Posted by Tobus View Post
I am in pursuit of that very same thing at the moment. It is surprising that almost nobody makes tartan cloth heavier than 16oz. One or two weavers claim to have 18oz, but there is some debate on whether there's really any difference. A 22oz coarse tartan these days would be a specialty item requiring custom weight yarn and/or a nontypical loom setup, if you could even find someone willing to take it on. And it would still be with modern softer wool, not the coarse wool that is apparently extinct. If I do manage to find someone to try a real heavyweight weave, it will cost a fortune.
You could try weaving it yourself. Peter MacDonald has done some hand-woven reconstructions. Though I couldn't tell you the weight.