Its a simple 90 degree angle bracket I did make it becasue i did need put my table just the wall

I upload the original file of the sketchUp.

For the printing

i recomenede

• No support , but use support of the infil. (i using Cura 4.8)
• Infill of 5% -Nozzel of 0.8
• 3 borderline -quality of 0,32mm