This is a cup and hoop storage system that I designed to hold the red snappers on my wife's handiquilter avante sewing machine. I had to put a bit of tape around the tab on the hoop part to get it to fit snugly in the Avante frame and I thought this was a better approach to printing the tab to squeeze fit into the frame itself.
Both parts printed without supports on my MK3S at 0.3mm layers.
The author hasn't provided the model origin yet.