LG Roboking Replacement Brush (L and R)

thingiverse

This is my first successful 3D-printed item! Recently, we purchased an LG Roboking robotic vacuum, which is fantastic, by the way. Unfortunately, the right brush broke off after some use. The design of the brushes features slight differences between the left and right sides. As luck would have it, I only had a replacement for the left side. While waiting for LG support to send me a new one under warranty, I decided to create a 3D-printed replica just to see if it could be done. After several attempts and using some fishing wire, voila! It's not exactly the same as the original, but it seems to get the job done. I'm open to feedback on the design. Note: This replacement brush needs to be scaled up to fit - I'm still unsure about what went wrong with my file. The diameter of the main circle should be 24mm, excluding the protruding brush parts. Also, note that I recently updated the file with a simpler design closer to the original. The initial attempt was too thick and kept falling off when the Roboking started its daily routine! **Instructions:** This replacement brush is based on the original design. Keep in mind that the left and right brushes are directional and feature different centers - the left has a hexagon while the right uses an octagon. Additionally, the original brush is more flexible due to its rubber composition around a metal axle. For this project, I used ABS, but PLA might be a bit more durable in this case. Files: * LG Roboking Right/Left Brush v1.stl: This file is for the right/left brush. * LG Roboking Right/Left Brush v1 Raised Tubes.stl: Same as above with raised tubes for easier access. * LG Roboking Right Brush v1.jas: Cheetah3D source file * LG Roboking Left Brush v1.jas: Cheetah3D source file To print the main brush: Be sure to scale so that the main circle is 24mm. I had to scale my file by 0.394 using my UP! software. Once you have printed the brush: Simply use fishing line as the new brush. On the design with raised tubes, thread lengths of fishing line in loops through each tube until they're full. Loop the lines carefully and try to keep them going in the same direction. When complete, use some glue or acetone to secure them, then cut each loop to leave as much line as possible. Be sure to cut in a way that keeps the loops pointing towards each tube. Check out the pictures for more details. For the v1 design with embedded tubes: You'll need to cut lengths of fishing line and attach them using glue. I did this by winding the fishing line around a piece of cardboard and tying it into three equal bundles, then gluing them into place.