A hometown photographer has asked me to assemble a 40x60 frame (from chops) and attach a printed canvas-on-masonite photo, complete with backing and hanging hardware. Due to the size and weight of the masonite photo, how would you fasten the photo to the frame? I'm thinking the typical framer points would not be "robust" enough to hold it well. Also, any ideas on finishing the back for a dust free professional look? I normally use heavy black paper backing...but don't have anything wide enough to use. Any suggestions would be appreciated! Thanks