Belt Tensioner X Axis Anet A6

thingiverse

The original belt tensioner by vernierroger is a clever design. However, I experienced difficulties fitting its internal components into my A6 X carriage. Furthermore, I was unclear about which hardware (nuts and bolts) to use in order to assemble it properly. I reworked the design using vernierroger parts as a starting point. To make everything fit better, I added more space for the internal components. Additionally, I modified the assembly process so that spare nuts and bolts from my A6 printer could be used instead of purchasing new ones at the hardware store. In detail: - The "edited frame" remains unchanged. - I made slight modifications to the tendeur/stretcher (which I call "pulley block") in order to accommodate the nuts and bolts that I wanted to use. For the pulley axle, I used a spare M3x30 flat head bolt cut down to approximately 15 mm of thread along with an M3 nut. Another M3x30 flat head bolt was used for the tension bolt, accompanied by a nut jammed against its head. The tension bolt was then pushed into the slot on the pulley holder (it's a tight fit, but it needs to be so that it doesn't rotate). I also reduced the height of the pulley block slightly in order to prevent it from binding against the top and bottom plates. Once printed, I filed the sides of the pulley holder just a bit so that it slides smoothly. - I modified the "knob" so that you can place a hidden M3 nut inside of it. Start the print and wait until it's about 80 percent complete. At this point, put the nut inside. When it starts making the hex-shaped space for the nut, get ready. Pause the print when the space for the nut is about 2mm deep (about the thickness of a nut). As the print head moves away, place an M3 nut into the cavity and then restart the print. The print head will come back and print the remainder of the knob around the nut. I made a video to help explain this process, but unfortunately, it's not very good quality. Hopefully, it will still be helpful in demonstrating my explanation. https://youtu.be/07crnQ8DOuU Since the nozzle oozes some filament while you pause, you may get a small defect in your print. To minimize this, give the filament a little shove into the print head when it's on its way back. It also helps to slow down the feed rate on the printer when you do this process, so that you don't miss the opportunity to place the nut. To do this on an A6, turn the controller knob counterclockwise while it's displaying the main information screen. - I created a new part called "Middle Plate". It's a replacement for the acrylic plate that holds the original idle pulley. I made it thinner so that there is more space for the pulley block to be installed in the carriage. In addition to the printed parts, you will need: 2x M3x30 flat head bolts (Anet A6 spare) 2x M3 nut (Anet A6 spare) You will gain 3x nuts and 1x bolt from the parts that you take out.