I had one boss decades ago.... We rebuilt a customers cub, among 4 or 5 others..... We did them all in phases, all the wings, then fuselages, then engines...... Anyhow, it took all winter to build them up. They all came out by late spring.
Normally, we would fly the first 3-5 flights, hour each, before handing planes over to owners to finish the break-ins. (Side note, great way to get paid to fly as a low time private pilot! And they say you can't get paid to fly as a PP)
This one a-hole customer didn't want us to fly his plane(we were fully insured, btw) he wanted to do it himself. So of course, he would come back with squawks, all the normal minor stuff that we would adjust/fix during our first few flights. He bitched right in the bosses face. Then refused to pay. Said the plane is his and he's taking it elsewhere..... Boss calmly walked outside, pulled his knife out, and started cutting all the fabric off the plane.... When the guy started freaking out, boss turned and said "the plane might be yours, but the fabric is mine until it's paid for"....
In case you are wondering, plane went elsewhere. And a lien was placed on it for the airframe repairs and engine overhaul, not the fabric job.