Tevo Tarantula - Dual Rod "Y" Axis

thingiverse

Tevo Dual Y Axis Linear Rod was the perfect choice for this project, surpassing even Linear Rail in terms of affordability and print quality. The "Y" belt features a built-in pretensioner, inspired by Dado Hajdarevic's innovative design. To achieve optimal results, I printed all components at 0.2mm layer height with 50% fill, without support structures. However, you can experiment with 10% fill for the 5mm belt adjusting nut and drilling template if needed. To assemble this project, you'll need two 8mm x 500mm linear rods, four 8mm linear bearing blocks (three will suffice but I used four), one M5 x 20mm screw, one M5 nut for adjustable end, and sixteen M4x12mm hex socket screws. Note that printing with support is optional; I opted for the design's original intention of no support. Using the acrylic carriage plate, I located the drilling template with a 3mm screw and drilled eight 4.5mm holes on one side only. This method proved easier than measuring. On the other side, I mounted the bearing blocks in the center using cable ties to account for any printer-related tolerances or movements. The drilling template helped me mark the four holes and file the plate as it's close to the edge. I've since updated the carriage ends and drill template to accommodate 10mm linear rods and 10mm bearing blocks. Update: 9/11/206 Now that I have all four bearing blocks mounted near the corner of the acrylic plate, the printer is performing better than ever. Initially, it was tight when bolting them down, so I placed them in the center on one side and secured them with cable ties. However, one of my bearing blocks turned out to be faulty/damaged, which I've since replaced. See the last photo for more details. Update 27/12/2016: I made a modification to the 8mm rear carriage, allowing the electrical connection for the stepper motor to face the rear of the printer. This change also added holes opposite the stepper motor instead of a cutout for extra strength and easier removal/assembly of the stepper motor pulley. Update 5/01/2018: I've added carriage ends to suit 12mm rods, along with a drilling template for the acrylic carriage. Although these components haven't been printed yet, I've tested their fit in CAD software only. The updated design now allows the stepper motor connection to face the rear and features an extra hole for easier mounting of the stepper motor pulley. Print Settings: Printer: Tevo Tarantula Rafts: No Supports: Doesn't Matter Resolution: 0.2mm Infill: 50%