Step 1: Tools and Materials
A piece of plate glass, (tempered is probably best if it has any size to it).
Mirror mounting clips (available at any hardware store)
Photo mounting corners
You will also need the following tools:
Tape measure and/or ruler or straight edge
Carpenters level or laser level depending on how well aligned you want everything
Drill/Driver or hand drill and screwdriver
Optional: A glass cutter if you need to cut your glass to a different size. Do not try to cut tempered glass!
Step 2: Locate Studs and Install Mounting Clips
Use your tape measure, straight edge, level, laser, or whatever measurement tools you have at your disposal to lay out the mounting clip locations. Follow the instructions that came with the clips to allow the proper offset to fit the piece of glass you are trying to support. You want the bottom line of clips as straight and level as possible so the glass sits in them right.
Pilot drill a small hole (smaller than the mounting screws) at each clip location to make sure you are hitting a stud. Adjust the alignment if necessary.
Screw the mounting clips to the wall with the screws provided with the clips. The spring loaded clips go at the top and the fixed clips go at the bottom.
Step 3: Test Fit the Glass
Step 4: Mount Photos to Glass
Lay out your photos how you would like them on the glass. Make sure they will clear the mounting clips on the wall. Put a self adhesive clear photo mounting corner at each corner of each photo. Rub it down so it is stuck to the glass well. You want the photos on the back of the glass facing out.
Step 5: Stiffen Photos If Using Larger Prints
Cut pieces of poster board about 1/2" smaller than the photos. Spray some glue on the poster board and stick it to the back of the photo. Smooth it out so there are no wrinkles in the photo. Let the glue set the recommended amount of time.
The Loctite stuff I used is basically sprayable rubber cement. You can peel it off and re-set it as long as you don't wait too long.