Patio Umbrella Bracket

Remix for mounting a patio umbrella to ~1.25" railing. The square profile of this bracket measures 32 x 33mm, and requires an M3 x 35mm bolt and nyloc. It takes some moderate deformation to fit the back-side tabs over the rail, so keep that in mind when choosing your material. I used Makergeeks Raptor PLA, and it has worked superbly. The two brackets have been in use out in the elements since early July, and I have seen no issues, thus far.