Clay extruder die

The high school I work at has a 4"square clay extruder from long ago. No dies though. I took one look at what those cost and decided to give 3d printing them a shot.

So far it has been an amazing success! We really struggled with making coils for coil-method pottery so all I have so far is a die with a single 1/2" round and a die with 4 holes, also 1/2". The taper was very effective in reducing pressure and making a nice smooth clay coil. 1 pound of clay resulted in something like 12 feet or