Maze ring generator
This is based on Maze cylinder generator. You may use MakerBot Customizer to generate the ring directly if you are not familiar with 3D modeling.
You may change the following parameters to generate a maze ring, a different maze every time.
wall_heightwall_thicknesscylinder_radiuscylinder_heightvertical_blockshorizontal_blocks
Find all my mazes in the collection "maze generators".