Tevo Tarantula X axis rigidity brackets

thingiverse

Excellent flexibility, the lightweight way. *Only 15 grams for the 2 parts* ** A no-nonsense solution to ghosting artifacts.** **NEW :** You might want to consider this version : https://www.thingiverse.com/thing:2847740 The Tevo Tarantula only holds the X motor and idler pulleys by one side of the X profile, leading to bending of the acrylic brackets when tension is applied on the belt. Motor side being the worst. **Required parts** - Motor side requires 4 M3x35mm allen screws and 4 sets of 3mm spacers,like on the Y axis : https://www.thingiverse.com/thing:2491039 - Idler side requires 2 M5x25mm allen screws, and 4 5mm spacers, also like on the front side of the Y axis : https://www.thingiverse.com/thing:2393545 - Each side needs : 2 M4 allen screws with T-nuts and washers I found the screws on eBay, "M3*35mm A2 304 STAINLESS STEEL ALLEN BOLT" and "M5*35mm A2 304 STAINLESS STEEL ALLEN BOLT" One STL contains the 2 parts kit, but distinct files are also provided for motor and idler sides. Print with 30% infill, with no brim or supports. Not too hot or you'll have to drill the 3mm, 4mm and 5mm holes after print. **Installation of the motor-side** - Start with the fully functional Tarantula and don't remove anything yet. - Remove the M3 screw holding the idler pulley - Fit the M4 screws, with washer and t-nuts on the additional bracket - Fit a M3x35mm screw with a plastic washer and a spacer, then the pulley on the bracket - Insert the belt and align with the motor as well as the X rail (t-nuts have to be horizontal) - Install the second 5.5mm spacer and push the screw to the motor through the acrylic bracket - Gently tighten the M3 screw as well as the M4/t-nuts, just to rotate them in lock position - Insert the 3 remaining M3x35mm screws in the 3 other holes, in order to align the bracket by pushing the end into original screw heads - Align the bracket with the motor and lock the M4/t-nuts. Then remove the 3 M3 screws - We'll continue clockwise with the bottom-right screw, that can be removed **by inserting the 3mm allen wrench through the 3mm hole** of the additional bracket. Remove the washer as well (if present). - Fit a plastic washer on a M3x35 screw, then through the bracket, and place a 5.5mm spacer, then a 9mm tube, followed by a second 5.5mm spacer. - Finally push the screw into the original acrylic part, and tighten gently but firmly (enough to prevent any movement of the stepper motor) - Repeat with the bottom left and finally top left screws - Tighten the M3 screws for good, then the M4/t-nuts.