Prusa MK3s Anti Vibration Noise Sorbothane Feet

thingiverse

Feet for the Prusa MK3s should do three things: - Be firmly connected to the printer and not wobble - Isolate vibrations to improve print quality - Dampen noise caused by those vibrations to enhance quality of life In addition, if you use an LACK enclosure, it shouldn't move. The stock feet don't really do these well. The only material designed to do the latter two is Sorbothane. Read about its properties here: https://www.sorbothane.com/material-properties.aspx This scientifically proven anti-vibration and anti-noise material feels like a gummy bear and is used in electronic and industrial equipment, such as 3D printers. This printed foot design with Sorbothane domes should maximize vibration reduction. To firmly attach feet to the printer, use slide-in frame brackets with screws. Print each foot at 100% infill to pass vibrations on to the sorbothane. Each foot is attached solidly to the frame by two M3 12mm screws to framebrackets that slide into the frame channel groove. You'll need to remove the frame ends, but this is easier than fiddling with drop-in framebrackets. The feet provide a round flat area to stick the adhesive-backed Sorbothane 1-inch 50-duro domes. I can confirm these work, especially with six! Just installed! When the Sorbothane dome is compressed, it works best. A too-large or stiff dome won't do its job. If it's too small or too compressed, it can't handle vibrations. Choose a set of specific domes so that the weight supported falls in the middle of the load rating for the Sorbothane, with optimal compression. The combination of dome size (1, 1.25, 1.5 inches) and duro rating (20, 30, 50, 70) tells you how many you need for a particular vibration load (weight). For the printer, we can use either four or six. It weighs about 17 pounds with a spool. After matching 17 pounds to various combinations of size and compression, using six of this type is the best combination to support 17 pounds: - Six 1-inch 50-duro domes support 12-24 pounds. - The 17-pound printer weight falls squarely in the middle of this range. You'll need six feet exactly. For each foot, you'll need: 1 Sorboholder printed 2 Framebrackets printed 1 Sorbothane 1-inch 50-duro dome 2 M3 12mm screws 2 M3 hex nuts (optional) 1 Woodprotectpad printed (two sizes included) Print everything at 100% infill because you need the printer vibrations to carry through them completely to the Sorbothane domes. PETG is preferred due to constant weight on the part. The woodprotect pads serve three functions. There are two sizes of these. Pick which one you like. You might print them if any of these apply: - Sorbothane can stain some surfaces like wood, and you have a wood surface. - Sorbothane is sticky, and you don't want it to stick to your table but the pads instead. - You want to slide the printer around on your table/desk easily. My mod that moves the LCD to the left or right side of the printer with a bracket: https://www.thingiverse.com/thing:3483560 Now you can mount a Logitech or any camera with a screw mount securely to the front frame, as well as place your Pi there for Octolapse: https://www.thingiverse.com/thing:3518161 You might also want to make this so the LCD cable is held better: https://www.thingiverse.com/thing:3485143 My favorite mod replaces just your Einsy door with an integrated Z-axis brace, so your printer has virtually no Z wobble: https://www.thingiverse.com/thing:3476970 Instructions with pics below. Fusion 360 file included for remixing.