Abstract: Improvements in a method for extruding plastic members includes a joint connection for splicing glass fiber rebars together in end-to-end relation for use as reinforcing elements in an extruded plastic member. The extruded plastic member is cut into predetermined lengths at the locations of the splices or joint connections so that the reinforcing rebars in the extruded members are joint- or splice-free. A device for locating the position of the splices in the extruded plastic member is suspended above the extrusion apparatus and is adjustable for any predetermined length of reinforcing rebars to be used in the extruded plastic member. After the extruded member is cut, a chilled plate is inserted into the cut to cool and solidify any molten plastic that may remain at the confronting surfaces of the cut to prevent leakage of molten plastic from the cut ends of the extruded plastic member.