While looking to make a 3D Michaelangelo Teenage Mutant Ninja Turtles cake for my youngest son, wanted to use 3/4 PVC pipe for structure support. Didn't want to pay $8/ea flange at local box store since I needed at least 5 flanges.

Created this design. It will hold 3/4" PVC schedule 40 pipe. It has 4 screw holes for mounting to a base.

I printed using Raptor PLA, since it is FDA food grade. Mine will be covered with plastic wrap so I could have used any filament but went with food grade as not certain if plastic wrap will 'come up' and then let flange touch cake.

Printed at 50% in-fill since when I used 100% in-fill the pipe wouldn't fit.