Gutter Clamp - INVISIBLE SCREWS

For mounting a gutter directly to a (brick) wall, I designed a bracket which can be 3Dprinted. The main reason for designing and printing this bracket myself, was to create a bracket with invisible screws.
I found the solution in a two piece bracket. Part 1 must be mounted to the wall with two screws and part 2 fits by easily twisting it 90° on part 1. The screws disappear between the parts. See pictures.

For the best result you can put in some paper between both parts (invisible) to minimi