Measure the length of the blade from tip to tip. Find the center and mark the spot with a washable marker.
Place one of the pieces of the Guard Dog blade guards onto the front of the blade. Mark the spot on the blade that matches with the center point of the blade. Cut the guard at this point using a box cutter or craft knife.
Place the second half of the Guard Dog blade guard onto the back of the blade. Mark where the blade meets the center. Measure 1/8th of an inch toward the back of the guard and cut the guard at this point.
Repeat this process for the second skate.
Attach the connecting springs. Screw the springs in place using the pre-cut holes in the guards. One end of the springs attaches to one piece of the guard and the other end joins the two pieces together.