Quote Originally Posted by KiltedCodeWarrior
Sett is measured from one stripe to the next matching stripe that begins the repeat. That being said, 3 inches seems very small. Are you sure it is kilt fabric you have and not something with a smaller set designed to be used for a fly plaid, shawl, table cloth, etc.?

And I think that a sett of 5-6 inches is a minimum for a nice looking tartan. With a 1 inch reveal, the pleats would still be 2 inches deep (slightly shallow) and you could make the reveal 3/4" or even a little less to get a deeper pleat.
In such case, most kilt makers use multiple setts. 1.5-3 center to center per pleat.