Quote Originally Posted by HarborSpringsPiper View Post
I did not know that sett size changed with material weight. I recall others mentioning previously that exact match-up is really not necessary with the waistcoat, rather sticking with the same tartan is what's important. I realize whatever I choose it's likely the colors will not be exactly the same, even from the same weaver, given variation between runs of the same tartan. I'm just curious as far as the garment itself if one would be a better choice.
Since fabric weight is for a given area of fabric, to make it heavier requires it to be thicker. Thus a 16 oz fabric will be made of larger diameter yarn than 10 oz fabric. Since the sett is described by the number of yarns of one color, then the next, if a tartan in 10 oz fabric has a 4" sett the same tartan in 16 oz fabric will likely be over 6".