25mm to 32mm base adaptor rings

thingiverse

These are adaptors for 25mm bases to convert them to 32mm bases. I was asked to make these by a friend of mine who plays an ork army in Warwammer 40k. Apparently due to recent rule changes his formerly 25mm based figures need to be based on 32mm bases. He bought some adaptors but asked me about making some. I based my designs on Mokanaman's design for 32mm, 3.2mm thick base and made modifications with Tinkercad. At first we tried ones beveled to match the 25mm bases, but these required the figure to fit through the hole, which rarely worked. I split the rings, but he preferred a model with that wasn't split and had straight walls to drop the 25mm bases into. As a further improvement, I put a thin 2 layer floor on the bottom of the 32mm base to make it easier to align the 25mm based model into. This was the version he preferred, gluing the adaptor in place. I am including all the versions I made, in case others prefer a different model. It should be pretty clear from the names which one is which.