How to Make a Signal Mirror

WHAT	HOW	WHY
Basic Operation	Method	Reason
Gather tools and materials	2 mirror pieces: 1-4x4x1/4 and 1-2x2x1/8 (any other sizes may be used, the procedure is the same). Pencil with eraser, pocket knife, super glue, 6" ruller or straight edge, permanent marker. Note: Edges of mirrors should already be sanded. CAUTION: Be careful when cutting mirrors to avoid cuts on sharp edges!	To have all equipment and supplies ready for signal mirror project.
Mark location of sighting holes	Make an "X" with the pencil in the center of each mirror by laying the ruler or straight edge diagonally across opposing corners.	To locate center of mirrors.
Remove coating from back side of mirror.	With a rotating motion, scratch through the coating on the back side of mirror with a pocket knife or razor blade.	To make a small pin-hole to sight through. (BE CAREFUL OF SHARP BLADE!)
Clean sighting hole.	Rub across hole with pencil eraser - make sure it is clean.	To remove residue.
Sight hole alignment	Lay mirrors back-to-back and check hole size and clearness. The smaller the hole the better - about the size of a pin head.	Changes cannot be made after gluing.
Apply glue	With large mirror face down, run a small bead of super glue in a continuous loop, half way from center to outside edges.	To keep glue away from edges and sighting hole. (EYE IRRITANT. BONDS SKIN INSTANTLY. READ CAUSION ON CONTAINER!)
Glue mirrors together	Hold large mirror reflecting-side down and small mirror reflecting-side up. Place one edge of small mirror on top of large mirror and with a hinging motion, look down through the sighting holes as you slowly rotate the pieces together. Hold for 30 seconds.	To bond mirrors together.

NOTE: Your local glass stores may be willing to donate scrap pieces of mirrors for this project.

Last Revised: May 25, 1998