Kossel Mini 4 Wheel Carriage

thingiverse

After assembling my Kossel mini with 1515 extrusions I found that the recirculating ball carriages were overly tight, prompting me to design new carriages utilizing materials readily available or easily sourced locally. Four wheels are preferred over traditional three-wheel designs due in part to my discovery of smaller Prime Line wheels at Home Depot. I do not perceive increased wiggle in this new carriage compared to its rigid and stable predecessor, possibly attributable to excessive tightness. With traxxas mounts being slightly lower than standard, I experienced a minimal loss of build height; I may reconsider elevating them in a future iteration but am currently satisfied with my prints. Moreover, placing the mounts between screws enhances mechanical stability and resistance to print warping. Below is a photo of purchased items at Home Depot, consisting of Prime Line M-6000: twelve wheels for about $12, along with #8-32 1inch screws costing around $2.36 per bag; only twelve screws are required in the build, although eighteen 22mm m3 cap screws and m3 nylon lock nuts were used. To upgrade mechanically without breaking the bank is a significant perk – all for $15 plus tax. The cost increases significantly if you're forced to acquire M-3 screws and nuts individually. Nonetheless, the model can be easily modified to accommodate more commonly found 25mm screws. Hopefully this guide proves valuable to fellow makers out there looking for affordable ways to improve their printer's performance. These prints were executed using PLA at a layer height of 0.3mm with 30% hexagonal infill and three-layer walls. Assembly is fairly straightforward; the included nut traps make tightening secure without any need for manual nut-holding wrench assistance. Next, slide an m-3 standard nut into the slots along the sides before threading in the tension screw loosely, thus preventing damage to delicate parts from improper bridging during print process execution. The wheels are simply attached thereafter. Then, secure the traxxas carriages in place – do not utilize locknuts with your new model, as this hole should serve that purpose itself due to precise manufacturing standards implemented.