Even with well conditioned clay I found it difficult to push that plunger for very long. My husband made this attachment for me to use with a caulking gun.
It is made of stainless steel. The masking tape around the extruder insures that it sets perfectly in the center of the attachment without wobbling around.
That tool along with a tip given to me by Carolyn of 2GoodClaymates to use armorall in the extruder has saved my hands and made it possible for me to weave polymer clay. Without having to buy a new extruder. :^)