Loo Seat Pads

A set of four replacement "feet" to fit over pairs of "prongs" on the underside of a dunny seat, the thing you might get nagged at for leaving up, or wet. The originals of these little blighters underneath my most comfortable chair have perished and busted to bits (maybe time for a diet). These four replacements are sprued together so there is only one part to print, which keeps the cost down. You'll have to cut them apart with a saw and clean off the rest of the sprue with a file, sharp blade or sandpaper. The overall dimensions of each "foot" are 40 mm length, 27 mm width, and 9 mm depth. The thickness of the dome is about 2 mm so you could probably reduce the outside dimensions a bit if you need to fit a slightly different space. The prongs that these feet will fit are 4 mm in diameter, 6 mm tall and  15 mm apart, which would be a lot harder to change. 
NEWS UPDATE 2020-04-03 Who needs a saw? I have just had these delivered and I found that they can be separated from each other easily enough just by twisting the join. The holes had to be cleaned/stretched out a bit by abusing a suitably sized screwdriver until they gave a nice but still tight fit on the prongs under my seat. To be a perfect fit the skirt would need to be filed to fit a curve but the design is better left flat so it can suit any slightly different curve.
The texture of the plastic (white natural versatile) is not smooth so I expect they won't stay brilliant white for ever, and I can't say how well they will last exposed to bleach or other cleaners.