This is an .STL of the HyperCube build platform for use with Simplify3D based on the Z carriage by bliatun and the Misumi extrusion profile by beverageexpert. Big thanks to those makers for sharing!

EDIT: Realized the first STL I uploaded will be oriented backwards when imported. Use HyperCube Bed_180.stl or rotate the original, save and re-import.