Mounting the frame to the mass wall.....

figure 1. ---------------------------- figure 2.

After drilling a hole through the wooden frame with an 8mm bit i had to drill a wider hole enough for the the nut to fit in the frame {as shown in figure 1.} so that the mounting surface will be flash to the wooden frame {as shown in figure 2.}

A good idea that I found very handy is to saw a groove in the threaded stud so you could use a screw driver to screw in the stud through the frame into the mountings.{as shown in both figures below}









Needless to say I used a washer and a spring washer to tie up firm and without worrying that by time it might get loose. {as shown in both figures below}