This is the large spool gear for the Python AMS.  I designed this to have the outer printed in TPU and the inner in PETG.  If using TPU for AMS, use the plate with gear and ring on it.  If you are using regular TPU, then use the separate plates. 

TPU for AMS

If printing this way, I suggest using PETG for the center because it bonds with TPU better.  PLA is not advised as it doesn't bond very well with most PLA.

Assembly

I used super glue to bond the ring to the center.  

I haven't printed the TPU for AMS yet, but have some on order to test this.

This is based on the large spool gear of the Python AMS. It is a creation of my own design using the dimensions of the original.