My Ooni Fyra 12 has one of the feet that deteriorates. The rubber foot keeps going into the “leg” which means that the oven is no longer level.
I design this foot to the same dimensions as the original one.
I print this foot in TPU and it holds up well. Print the foot vertically (like if it's in the leg) and add support for the top hook.
The author marked this model as their own original creation.