I tried different tool heads, mounting orientations and so on to find the "best" one. This will make tramming the z-axis a pain in the a***e but at the same time will strongly improve print quality. I found that at the lenght of the spindels, which is needed for a 500mm z-movement, you need to constraint the spindle on the top AND bottom to keep distortion / ghosting-artifacts low. The z-Axis consists 2 10mm lead screws and 4 12mm smooth rods to keep everything in place. If you want the best experience choose geniune HIWIN-rails (which I recommend - QC in china is not that great, approx 700€). You are free to order them from china (approx. I opted to use linear rails from Hiwin with a rail "width" of 12mm for the y- and 9mm for the x-axis. Asortment of screws (list not complete yet) How many of each part you need is shown in the files name. Silicone Heater (110V/240V, number & lenght see excel).capton tape or thermal adhesive (to mount the thermal fuse to the silicone heater OR in a groove on the bed).1x thermal fuse for silicone heater (check desired temperature & expected current).E3D Titan, Bowden (it will be used as a direct extruder, but we won't use the groove mount).optional: Duex (for more extruder motors, servo output or 5V inductive sensor). XT30 connector (1 set male+female for each tool head).MPX 6 Pin connector (1 set male+female for each tool head).drag chain for z-axis / heated bed (20 mm width).5x Nema 17 (body lenght 8mm (lenght see excel).2x bearing 6700 2RS (for top spindle mount).2x GT2 drive wheels, 16 Tooth, Bore 5mm (for Nema 17).6x GT2 Idler, 16 Tooth, Bore 3mm, wit teeth.2x GT2 Idler, 16 Tooth, Bore 3mm, without teeth.2x Hiwin MGN12 rail (length see excel).Obviously the Hypercube is not suited to mount a heavy extruder onto the x-carriage on a printer this size. But after zip-tying my E3D titan to the x-carriage everything went fine. I got clogs all the time and re-assembled the hotend multiple times because I thought it was heat creap or a gap between the nozzel & heatbreak. I opted to use a direct drive system, in the very first iteration (which was more like a Hypercube), I tried to use a bowden setup which did not work out at all. I included an Excel Sheet so you may calculate the requiered length, if you aim for a smaller or bigger version. The y-axis is optimised to allow space for the tool changing mechanism. The printer features a built area of roughly 500x500x500mm. While doing so I also added an "electronics compartment" on the back using 3060 aluminium extrusion. I also tried rails and bearings from IGUS but they did not work out for me (to much play). So I started optimising all parts and changed all linear guides to linear rails from Hiwin (MGN9 and MGN12). This has to be tested.Īt first I planned to built a Hypercube / Hypercube Evolution but soon found I that the design was not stiff enough for the build area I was aiming for. On my request E3D told me that a direct drive tool head should work. I also have doubts that the clamping / tool changing mechanism can bring up enough force to hold a direct drive extruder with a full sized Nema 17 stepper reliable. At this stage this is only a big CoreXY machine because the E3D tool changer is not released yet. I wanted to built a really reliable printer which is ready for the E3D tool changing mechanism, when it is finally realeased.
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