9mm X 4.25mm X 1.5mm Washer

thingiverse

I created a 9mm OD washer with a 4.25mm ID hole and 1.5mm thickness, designed for use as replacements or additions to Robo 3D extruder tension screws. To my surprise, the printed part measured a snug 4mm, which turned out to be a welcome bonus. The threads thread on easily and remain securely attached even when released from compressed springs. This is a significant improvement over previous issues with loose washers flying off during use. Now I can experiment with various washer configurations to optimize filament tension, and my results can now be replicated by others! In the photo - yes, that's aluminum underneath those washers! Print Settings Printer Brand: Robo 3D Printer Model: R1 ABS + PLA Model Rafts: No Supports: No Resolution: Whatever you like Infill: 100% or as many perimeters as needed Notes: Although designed for the Robo 3D tension screws, these washers can be adapted for general use. Modify the dimensions to suit your needs and print in PETG or ABS for durability. PLA is also an option, but it's not suitable for high-temperature applications. These washers print extremely quickly at 0.2mm, so I recommend printing multiple copies at once to prevent globbing or warping. On my first attempt, I printed 36 washers in under a minute each, totaling 35 minutes. One last thing: if you use Simplify 3D and encounter warnings about the part being too small or in inches format, ignore them and let it load as is. It will work perfectly fine. How I Designed This I took charge of R&D since the Elves were on vacation. A minor slip with a tiny donut and a piece of filament led to the creation of this plastic disc. Initially, I thought it was a useless byproduct, but then I used it as a makeshift washer for my Robo 3D tension screw, and it worked surprisingly well. I'm kidding - I just had a terrible week with my printer, so I created this in desperation to make progress.