Metal Bed Plates
The only two pieces on the printer (besides the printed parts) that can not be easily sourced online. This includes two high quality machined parts. The Z Axis Frame Plate and the Bed Heat Spreader. Holes are drilled and tapped. The heat spreader (the part that the glass build plate attaches to) is made out of Mic-6 aluminum for an extremely flat surface.
These are included in the kits, but are available separately here if you choose to source your own parts.