Steps // How to Build a Mirror From Case Molding
1 ×

Turn Case Molding into a Mirror Frame

 
Step One // How to Build a Mirror From Case Molding

Turn Case Molding into a Mirror Frame

Illustration by Jennifer Stimpson

Cut list:

¾-inch plywood: one @ 53 by 41 inches
¼-inch hardboard: two @ 2½-by-41 inches
¼-inch hardboard: two @ 2½-by-48 inches
3-inch fluted door casing: two, cut to size
3-inch fluted door casing: two, cut to size

Download the illustration and cut list for this mirror project.

 
2 ×

Cut the Pieces

 
Step Two // How to Build a Mirror From Case Molding

Cut the Pieces

cutting the pieces
Photo by Wendell T. Weber

To size the plywood mounting board, add the casing widths to your mirror's dimensions and subtract 1 inch from each side. The casings, resting flush on hardboard spacers, will overlap the mirror on their inside edges. Use a circular saw to cut the plywood and hardboard. Position the mirror and spacers on the plywood so that the spacers are flush with the plywood's perimeter.

 
3 ×

Attach the Mirror and Hardboard

 
Step Three // How to Build a Mirror From Case Molding

Attach the Mirror and Hardboard

attaching the mirror and hardboard
Photo by Wendell T. Weber

Apply wood glue to the hardboard strips and clamp them in place. Apply mirror glue to the back of the mirror in a zigzag pattern, and nestle it inside the hardboard strips. The hardboard strips should lie flush with the surface of the mirror and create an even plane for the molding to be installed.

 
4 ×

Install the Corner Blocks

 
Step Four // How to Build a Mirror From Case Molding

Install the Corner Blocks

installing the corner blocks
Photo by Wendell T. Weber

Set the blocks at the corners of the frame so that the outer edges extend slightly—and equally—beyond the plywood and the inside corners overhang the mirror. Glue and nail the blocks in place through the plywood, being careful not to nail into the mirror.

 
5 ×

Attach the Molding

 
Step Five // How to Build a Mirror From Case Molding

Attach the Molding

installing the corner blocks
Photo by Wendell T. Weber

Cut the fluted pieces to fit between the corner blocks, and set them in place overhanging the mirror by 1 inch. Glue, clamp, and nail the moldings to the assembly through the hardboard and plywood. Plug the fastener holes with wood filler, then sand and paint the frame.

 
 

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