Clay extruder
thingiverse
This clay extruder uses a standard caulk gun and a segment of 2 inch PVC pipe. I've included 2 insets for the extruder: 6 mm circle and half moon. I've also included a blank inset in both .3mf and .stl format. You can use this to create your own. Just use your favorite program to add cut-outs. I used 3d Builder since it is included for free with Windows and is easy to use. The extruder press piece can be glued onto your caulk gun plunger. I didn't glue mine onto the plunger but just put it on top of the clay after I've loaded the tube with clay.
With this file you will be able to print Clay extruder with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Clay extruder.