Update - 20 Feb 2017
Added additional STL & Sketchup models for those that require additional height between the stacked tables. Added 3 more models 15mm, 40mm and 50mm for additional height. If more height required, simply load the Sketchup file, extrude the required height, export and print.
Building an IKEA Lack Printer enclosure and wanted the whole setup to be easy to disassemble for maintenance. These feet are perfect for this, with 2 tables stacked.
Original design is fine except, it was somewhat weak at the joint so increased the thickness in Sketchup and fitted perfectly.