So the stock rubber feet for the MK3 leaves your printer wobbling all over the place, the hard feet are great but make your printer a lot noisier. There has to be a better solution right?
This is a designed to hold the stock rubber feet in place while stabilising them as much as possible. I have achieved this by designing the foot holder so that only a very small proportion of the foot clears the bottom of the support. The other part to this is that the foot holder is slightly undersized so it compressed the rubber feet slightly. Compressing the rubber feet slightly has made the bottom of the feet more grippy so when you put your printer on a surface the feet grip really well and hold the printer solidly in place.
Important: when you first fit the rubber feet the holder will seem too small, that is how it has been designed, as you tighten them against the frame it should force the rubber foot further into the part and into the correct position with just a small amount of the rubber foot clear at the bottom.
I then secured them using a 3D printed 3030 T nut for M3 fasteners (This is the one that i used. https://www.thingiverse.com/thing:3199057)
Addition hardware required:
8x M3 Machine screws 8-10mm (I used 5mm which were just long enough but a bit fiddly, 8-10mm should make life much easier)
8x M3 Nut's (I used nyloc's)
These have significantly reduced the amount my machine wobbles round and have had a positive effect on print quality while maintaining the quiet printing of the stock feet. I also move my printer round a fair amount so installing these has means i no longer have to worry about the stock feet falling out as i move it round.
Update 1: I have slightly Tweaked the file to allow extra tolerance as i was finding installing them was slightly hard.
Update 2: I have now been running these on my printer for some time and have done a fair amount of printing and testing with them. I have printed a huge variety of things from highly detailed lithographs of the moon that are <24 hour prints to tall skinny rocket nosecones that use the full build hight. With all of the prints i have done i have found that these feet have preformed very well throuught and i am getting really good consistent, high quality prints while my printer continues to be quiet.