GEEETech i3X: X-2-B/C Upgrade Kit

thingiverse

Hi, In the GEEETech Acrylic Prusa I3 pro series, the X version is the entry-level one with acrylic idler where B and C versions now have metal ones. But before they had printed ones! Unfortunately, the X version has a 27mm distance between bars, whereas B and C have 22mm. This means owners of the X cannot buy the Metal upgrade kit. With my X-2-B/C kit, owners of i3 can print brand new idlers, carriages, and extruder holders to quite transform their i3X into an i3B or i3C, the mono or dual extruder version. The two idlers look like old printed ones but have 27mm clearance between bars, end-stop support, and X motor centers aligned with i3X ones. In addition to new idlers, I've also refurbished carriages and extruder holders to integrate good ideas GEEETech introduced in metal components: 1. New X-Belt fixing is easier to use than the old one. 2. X-End Stop regulation has been added. 3. Holes for unmounting motors have been included for dual versions. 4. Nut space on extruder holders accommodates screw add-ons. The original i3X X-Motor idler has the motor inverted compared to i3B/C, so you need to reverse the firmware's sense of rotation. Simply find the row "#define INVERT_X_DIR" and change it from false to true or vice versa – that's all! PS: Unfortunately, I couldn't reuse the linear bearings in idlers and carriages from the original i3X and had to replace them with LM8LUU linear bearings designed for i3B/C components. If you "fall in love" with this design, remember it takes time to create, design, and share – so maybe use the "Tip Designed" button on my profile!