"I could train my dog to weld plastic pipe". Well it's a little harder than that Shawn, but if you had a pet monkey.
You see, you still need an opposable thumb to make good fuses. It's kinda funny. When you talk to some of the older guys I work with they say when plastic first began being used, only the welders were allowed to fuse plastic. Now we have contractor crews working for us and if you have a pulse you can probably get qualified to fuse.