Article: You can use the backboard of your frame as a template. Use an X-acto knife and a metal ruler to make clean, crisp lines. Use a ruler to make your lines, and cut the foam core using a straight-edge razor. Take 1 piece of tape stick it to another piece of tape facing the opposite direction, to create a crossed “X” shape. Stick this to your foam board, so one end of the “X” sticks to the board and the other’s adhesive side is facing upwards. Place your artwork over top, sticking it to the other side of the “X”.  Make sure you cannot see any of the foam core after you place your art on top! Acid-free tape will keep your artwork in good condition for years to come. You can attach it with another “X” of tape. Measure your matboard from corner to corner to help you center it, if you need to. Place your art and foam core in the middle of your mat board, and smooth over the surfaces so the tape adheres to the matboard. Line up your acrylic spacers inside your frame’s inner edge, and cut the spacers using wire cutters. Then, simply unpeel the covering from the adhesive side of your spacers and adhere your spacers directly to the glass of your frame.  Your spacers will help your art fit tightly inside your frame. You should have 4 acrylic spacers, 1 for each side. You should be able to easily place the art inside of the frame. Then, place the backing to the frame over your artwork, and replace the back hinges using your fingers or a dull side of a knife. Your artwork should appear to be “floating” above your mat board.
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Cut a piece of matboard to the size of your frame. Cut a piece of foam core .25 inches (0.64 cm) smaller than your art. Mount your art to the foam core using acid-free artist's tape. Tape your foam core in the center of your mat board. Measure and cut acrylic spacers to the size of your frame. Put your floating artwork inside of your frame.