Anet A8 custom X-idlers (in OpenSCAD)

thingiverse

November 9, 2018 I'm upgrading this project to develop my custom Prusa i3 type 3D printer (like the AM8) based on 2040 Aluminum extrusion profiles and a 200x300 heated bed. All parts are printed. Use the OpenSCAD file to create your own design, taking into account your frame's measurements and the components you purchase. I've made significant changes, including a belt stretcher, proper right mounts, and a different location for the switch on the left mount. This upgrade includes various types of right X-Z mounts, a change in switch position on the left X-Z mount, and several small fixes. The OpenSCAD file contains 3 modules to create the X idlers (right and left X-Z mounts) and the X-rods for Prusa i3 style printers like the Anet A8 or the Hesine M-505. I designed this assembly to develop a new frame with alternative bed size parameters and adaptation to my acquired materials. In the design, simply specify the outer diameter size of the Z-rod bearing, the tolerance on the X-rod, the length of the rods you bought, the center-to-center distance between the Z-rods, and the center-to-center distance of the Z-rod to the threaded rod (note that there is also a parameter that extends the left mount for frame or electronics box clearance). Also note that there's a boolean operator to remove/insert screw holes for the trapezoidal nut. This will produce the X-idlers. When calling the modules separately, you can generate the STL files yourself. Remember to make changes according to your own design and check dimensions beforehand. For example, all pictures are generated with a z rod thickness of 10 mm and an increased length for the x rods (450 mm long). Leaving out the trapezoidal screw holes requires using a lifting device that contains the trapezoidal nut. This explains why the trapezoidal nut flange is located at the bottom of this design, creating a larger base to rest on the lifting device. The lifting device depicted in the assembly pictures can be found at https://www.thingiverse.com/thing:2588347. The linear bearings developed with https://www.thingiverse.com/thing:2476782. This design uses 2 libraries; install them in OpenSCAD: https://www.thingiverse.com/thing:871140 https://www.thingiverse.com/thing:1305888