I am trying to push a vertical hole through this angled plane. The purpose of the hole is to pass a screwdriver through it to access the screw below. I tried projecting a guide through the angled plane from the center of the hole below. Then drawing a circle above the plate. I then rotated that circle to be horizontal and pushed it through the plate. But it did not merge with the plate and I could not simply erase the surfaces I didn’t want. What am I doing wrong?
The angled plate is grouped and when I try to create the hole I om working within the group.