My bedroom floor is properly wonky so instead of the wooden blocks that I used to use, I designed this in Sketchup. The base of each of the feet is 80mm so the outside diameter is 90mm with a 5mm wall that sits around them (like a glove).

I've used ORCA Flashforge with Esun PLA+ which seems to support the weight happily. The other end of the bed only needed a 25mm riser so I changed the dimensions in Orca Flashforge to suit