Originally Posted by jyasaki
Aren't all hypalon boats "built by hand"? At least the tubes are... No automation, as far as I'm aware.
Yes, all hypalon tubes are hand glued. PVC tubes can be hand glued or thermobonded, but are most often thermobonded because it is a much cheaper process (which is the primary reason for using PVC in the first place).
The problem with thermobonding is that it makes the PVC less pliable at the seams, creating a stress concentrator resulting in the area just beside those seams being prone to cracking.
With a PVC boat that has hand glued seams (which I believe zapcats are) if there is a leak in the seams it can be repaired, whereas thermobonded seams cannot be repaired.