I made it in 1/8 hardwood and sanded tabs flush. If using ply or proofgrade you may want to adjust tabs slightly so that sanding is not needed. Add your own decorative sides & embellishments as you like of course!
Make three sets of stairs, one long & two short & glue into place alternating directions as needed.
If anyone wants the double sided tower with folding sides let me know, but I’m not going to bug the forums with it if no interest.
Here is the double tower for those interested in it. Size the round holes correctly for whatever dowel you are using for the pivots. Let me know if you need instructions on the assembly.