About this 3D model
20 x 20 x 20 mm, 20 x 40 x 40 mm and 20 x 60 x 60 mm 90 degrees T-Slot brackets. 135 degrees version of them can be found at https://www.thingiverse.com/thing:3733070
20 x 20 x 20 mm, 20 x 40 x 40 mm and 20 x 60 x 60 mm 90 degrees T-Slot brackets. 135 degrees version of them can be found at https://www.thingiverse.com/thing:3733070