I had the same problem with wet clay extruded cylinders. I put a table under the extruder and extruded a cylinder about two feet long. I put a bat under it and extruded it until it touched the bat. I let it hang full length with a small fan on it. I worked on other projects until it dried enough to stand on its own then I cut it off with my wire. If you need it in a real hurry this may not be applicable but I multi task and it is so much less frustrating to work on a cylinder that stands on its own then to fight with a collapsing piece of clay.