Vertex-H

thingiverse

After success with my VertexEvo project, I started searching for ways to simplify kinematics of Vertex K8400 even further and at the same time increase the print area. It appears that H-bot design can help achieve both goals. <b>Update 9-Oct 2018</b> I am in the early stages of the design process, posting an image to show how it may look. A single 9mm GT2 belt is aligned vertically with the centers of both X and Y axes. MGN12H rails replace 8mm round roads. I will be updating this post as I progress. <b>Update 15-Oct-2018</b> The design is complete, looking promising. Started printing parts... <b>Update 23-Oct-2018</b> Assembled and printed a few items. Used the same firmware configuration as for VertexEvo; just changed Xmax, Ymax, and Zmax. Had about 50% successful prints. Another 50% failed with printhead shift along XY. This can be caused by insufficient belt tension or too low motor current. Investigating... Meanwhile, here is the list of parts (screws not included): - 3pcs MGN12H Linear Sliding Rails 300mm. You will need to cut 2 of them to 280mm length. Bought on eBay from seller renshuiyuan. - GT2 9mm belt 183 cm (6') - 2pcs GT2 Pulley 20 Teeth W=9mm bore 5mm. Bought together with the belt on eBay from seller powge - 2pc GT2 Idler Timing Pulley 20Teeth W=10mm, 5mm bore - 4pc GT2 Idler Timing Pulley with no teeth W=10mm, 5mm bore. Bought all 6 pulleys on eBay from seller liansgcun20173 - 2pcs e3d v6 hotend from https://e3d-online.com/. Chinese clones may not fit. I bought MGN12H rail clones and had to disassemble and clean them. Followed these instructions https://www.youtube.com/watch?v=c53sa46C1qQ One rail was completely unusable, but the seller stepped up and sent me a replacement for free. <b>Update 28-Oct-2018</b> Layer shift issue was fixed by reducing motor current. Making minor changes to XY clamps and printhead. <b>Update 31-Oct-2018</b> Redesigned PCB and uploaded gerber file. Ordered PCB from https://jlcpcb.com/. Once it arrives, will publish the images of assembled PCB. Published all STL files. Will write a detailed description and upload actual images later this week. <b>Update 4-Nov-2018</b> Uploaded video showing Vertex-H at work https://youtu.be/o6aHJYE-vaw <b>Update 8-Nov-2018</b> It appears that 25mm fan is not able to cool down e3d. This is causing nozzle clogging. Will need to fit in 30mm fans and redesign the duct. <b>Update 14-Nov-2018</b> This project is complete. I uploaded 24 images of my Vertex-H. I will update a few STLs (hopefully) later today and add description.