kilt making offcuts

[plaid preacher]

Or more correctly:What are offcuts?

Imagine a kilt maker takes a length of tartan to make a kilt? Say, for example, 9 yards. The remaining bits of cloth, from that 9 yards, after the kilt construction is finished, are known as “offcuts”.

Jock is correct - sometimes there is a little bit of excess that is trimmed off the edge. The other offcut can come from making a kilt out of double width cloth. This leaves a long, thin strip that may be used for something.