Prusa i3 MK3 Sorbothane or Felt Feet by Brigandier

Last crawled date: 3 years ago

THIS IS AN OLD DESIGN that I am keeping up to point to better things. These have been superseded by steelfab's design here: https://www.thingiverse.com/thing:3082188 - in his words in chat, "OMG - it is just like Brigandier's and jltx 's feet (for the MK3) had sex. Not tested yet. But I preferred Brig's method of attaching them and JLTX's design and low profile." Thanks to everyone who has liked and used this design, and thanks to steelfab for iterating on it and improving it!
UPDATE: Lipped version added for up to 1" diameter pads! General consensus is the lipped version sucks, but someone requested it so it's here. If you're using something with adhesive, the non-lipped version is strongly recommended. It will give you a perfectly smooth bottom surface to adhere to.
UPDATE 2: Fusion 360 files added for those of you who want to adjust this to your own pad sizes or screw head sizes. Please find both flat and lipped versions.
The stock rubber feet on the Prusa i3 MK3 are horrible vibrating monstrosities, creating heavy vertical lines in the Y axis of prints. Testing on the Prusa forums have shown that having no feet at all is better than having the rubber option on.
I have created these special replacement feet to allow 1" sorbothane hemispheres to be attached. Sorbothane is an amazing material and much more suited for this application than rubber. Please Google it if you aren't aware of its properties.
This should also work for the thick circular felt feet you can find in most stores, if you'd rather go that route (i.e., maybe for a Prusa mounted to a cement block).
UPDATE 3: After the sorbothane feet had a chemical reaction with the finish of the desk I had the printer sitting on (they melted and fused with the lacquer!), I swapped to 1" felt furniture pads under these. The machine is a bit louder, but I am getting better results than with the sorbothane.
If I had to describe the sorbothane effect, I would say they are better at absorbing vibration than the stock rubber ones; however, they are still reactive, and they still take some time to do work (they just do it faster than rubber). The effect is that length of time the ringing is happening is decreased, but IT IS STILL HAPPENING. With the more rigid felt pads, the machine doesn't have the ability to bounce. This ends up being louder, but has a much better effect on eliminating artifacts.