ROB-O Junior FFF 3D Printer using 80/20s 10/10 (1"x1") extrusion

thingiverse

The provided text appears to be an update log for a DIY printer project, detailing various modifications, improvements, and additions made over time. The updates span from November 2015 to March 2017, covering changes in design, functionality, and performance of the printer. Here's a brief summary of the key points mentioned: 1. **Initial Setup (November 2015)**: The creator mentions mounting the bed power cable and thermistor cable to keep them out of the way, splitting the display into two boards, and modifying active cooling fan ducts for PLA printing. 2. **Later Updates**: - In December 2015, a better Z endstop was implemented, replacing a hall effect sensor with a magnet mounted on a screw that passes in front of the sensor, increasing its reliability. - In March 2017, several subtle changes were made to improve the printer's performance. These include adding v3 of the Z coupler, which uses a threaded design to reduce movement out of true when tightening set screws; and updating the XY motor mount with a bearing holder for a 12mm ID bearing to hold the top of the ball screw. - The creator also mentions switching to a 110v heated bed that runs off the mains and uses a solid-state relay, which provides easier operation and faster heating. These updates demonstrate the ongoing development and refinement of the printer design.