Here are 10 finished hoops just after the second coat of varnish. I'm not sure the adhesive is waterproof, so I want to make sure to seal the edges of each hoop well. After launching Aslan, I can see these mast hoops will not work. The heat sensitive glue used on the edge banding material is too soft, and the hoops tend to deform and twist. Its not horrible, and I'll be able to sail with them for a while, but it isn't the solution to having wooden mast hoops without steam bending them either.
ABS is a soft material, but it can be hard to cut.
I actually had a carbide blade failure cutting the hoops, even though my technique was correct. Here, I have a stop which is clamped to my table saw sliding cross cut box. With the blade just high enough to cut through the coupler, you slide the table forward until the blade cuts through the plastic, then rotate the top of the coupler toward you slowly. The secret, I'm told, is to use a regular steel blade, and mount it backwards in the saw. After cutting, and then sanding the edges and especially the inside edges where the hoops will run against the mast, they had quite a number of scratches.