I'm about to embark on a build of a Hypercube Evolution printer - a design by Scott_3D available here on Thingiverse. The Hypercube Evolution is itself a re-design of the excellent Hypercube by Tech2C. My printer will have a print volume of 400mm x 350mm x 350mm - quite a large volume! With the width of the bed at 400mm, I wanted a design with dual Z-Axis leadscrews (left and right) for stability of the platform, and the Hypercube Evolution offered that. With my wide X axis, I also wanted 10mm linear rods, and that is where the standard design was not quite up to scratch in that the standard offering was 8mm rods spaced at 45mm centres, with an option to use 10mm rods and bushes by means of an adapter. The adapter allows the 10mm bushes to fit into a carriage designed for LM8UU bearings, whereas I wanted to be able to use IGUS LM10UU equivalent bearings on my X rails. As I knew I would be making modifications to several parts, I actually started by redrawing each and every component, taking measurements from the STL files so as I had all the parts in CAD - this was many hours work! Then I set about updating the X Carriage and a number of other components to make it all work together nicely. This is the result - my version of the printer I will be building : I've also spaced the 10mm X rails at 50mm rather than the standard 45mm : The updated X Carriage assembly with LM10UU bearings (I'll be using much lighter IGUS versions): I'm adding some additional members to the frame to allow me to have an enclosed split rear cavity. AC mains gear will be in the right side, and low voltage on the left : Y rails are 10mm, Z rails are 12mm. I will likely use standard steppers with couplers on the z axis rather than integrated leadscrews - slight loss of build height, but cheaper and gives me more options later if I want to swap out TR8/8 for TR8/4 or TR8/2 leadscrews. I'm also thinking of adding a stabiliser for the leadscrews at the top - a printed bearing housing or something. May not be necessary but the leadscrews is 400mm. I've started buying parts for this, and I'll snap some photos of the bits I've received so far, which include : MKS SBASE control electronics - ARM 32 bit running Smoothieware MKS 3.2" colour touch LCD E3D V6 hotend, plus a complete E3D Volcano - I'll be making mounts for both for quick change (part of the Hypercube Evolution design) Bondtech QR Extruder 12V 400W PSU (hotend and fans etc are 12V - heated bed will be mains powered - 240V ) Still lots to buy! Should be fun though. As I've now locked in the design, I can order all the 3030 extrusions plus the 2020 extrusions - can anyone suggest a good seller? I may get them out of China, but its almost 9m of 3030 and shipping will be rather pricey! Plus, I'm actually building 2 identical printers (I have 2 of everything listed above so far!) so double the weight.