an extruding machine for the extrusion of plastic or other similar materials in variegated forms comprising a series of bar members spaced from one another , wherein said bar members form by their interstitial spaces the extrusion chambers ; said bar members having heating elements integrally disposed therein for the purpose of heating , to an amorphous state , the plastic material placed on and contacting the upper surface of said bars for extrusion into a receptacle beneath the bars .