Hypercube 300 / 400 Creality Bed Mount

These Z axis bed mounts are based upon a Creality 400mm heat bed. The holes are inset 35mm and the bed is 410x410 overall. For the frame, I used the calculations from http://superjamie.github.io/hypercube/ which gave me the following dimensions:

The heatbed I ordered is this one: https://www.ebay.com/itm/12V-180W-Creality-3mm-Aluminum-Thermal-Heated-Hot-Bed-Hotbed-For-3D-Printer-New/372091222016?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D44039%26meid%3Da94a8b8aa8d74b9ea12437c4a7eb07fb%26pid%3D100005%26rk%3D5%26rkt%3D6%26sd%3D311968105439%26itm%3D372091222016&_trksid=p2047675.c100005.m1851

Frame Extrusion and Rods
X Extrusions (4x): 540
Y Extrusions (4x): 503
Z Extrusions (4x): 695
X Rods (2x): 560
Y Rods (2x): 500
Z Rods (2x): 495
Bed X Extrusion (2x): 510
Bed Y Extrusions (2x): 255
Lead Screw: 545
Belt Length: 4490

All other parts so far are taken from the HyperCube300 by adrianm1972 so be sure to thank him for the great design as well as Tech2C for th