Bash Ring for 30-Tooth Shimano Deore 5100 Crankset

I found Bash Ring for Shimano FC-5100 Crankset (32t) by i32 (https://www.thingiverse.com/thing:6905994). but it didn’t work with my 30T chainring. This is inspired by that, but I changed diameters, and thickness, removed material around the spider arms, and every other aspect, so I don’t know if it’s really a remix.

The bash ring is held onto the chainring by 4 M3 screws, nuts and washers. The screws fit in the 4 small holes, the other holes are just to save a little material and make the ring lighter. I may change the style of the lightening holes to angled slots, but I don't know when I might find time. I don't actually notice or think about the ring.

Current files are for a 2-piece design. The outer ring can be printed without supports. The mounting plate should be printed with supports, but the supported area will be covered by the crank arm, so you won't need to put any significant effort into removing support material. I removed the tabs that fit into slots in the chain ring. The parts are held in place securely by the 4 screws, and the tabs were causing a creaking noise.

I used 60% cubic infill with 2mm wall thickness. It is heavier than I expected, but feels pretty tough. Parts should import into your slicer in the proper orientation for printing.