Proper way to put print, matting and backboard together

I would like to hear from others how they put the print,matting and backboard together as to tape used, hinges or corners and to also get it to be all achival in the end.

Dennis, I think you will find that using the Gatorboard only is sufficient. But, if you want to add one other layer of protection, especially if you are going the extra mile to make your final product archival, then I might suggest using another small piece of mounting board, but again, it would not be necessary. Hope this helps!

I attach the print to the back of the window mat (acid free) with artist's tape(acid free) along the top edge only. The window mat and the backboard are then fastened with double stick tape (Scotch brand) not allowing the tape to come into contact with the print of course (the tape is used only at the corners and the half way points of the height and width). Gatorboard can be used as the backing board but you can also use acid free foam core which is cheaper and off-white in color. All these items can be gotten at any good art supply store.