Quote Originally Posted by way2fractious View Post
Wool fabric, especially the lighter weights, will probably not meet your expectations if used to construct an X-kilt using the instructions as written. Kilts made from wool generally need the hair canvas underlayment in order to hold their shape and to prevent tension stresses on the pleat stitching and the fabric itself.
But you can get around that problem by adding a strip of cotton canvas (prewashed and shrunk to final size) to the inside of the waistband to prevent the pleat stitches from coming under tension. (Use cotton because it, like the poly/wool fabric, is washable) While you're at it, add a plain cotton liner and a tartan strip to bind the waistband. May as well make the apron wider while you're at it.

Lookey...with just a bit of tweaking your X-Kilt instructions have enabled you to construct a very serviceable casual box pleated kilt!