DFW40
10+ year member
CarAudio.com Veteran
I make triangles out of mdf with a 90 degree angle. Then I take wood glue and slop it on and set the triangle wherever it needs to go, then I take a glue gun and go around the edges to hold it in place while the glue dries. This way you do not need to mess with getting the screws in the exact spot or wood splitting etc. It is really easy and fast to do and once the glue dries it is set/