8: By turning the “sliding” triangle 90°, as shown by the “ghost
image”, you can easily draw or cut something at a 90° angle to
the base line. The 90° angle is formed in the space between the
two triangles directly above the middle finger of my right hand.
8
Here is another trick using the same technique. If you need
to cut a number of strips of masking tape into narrow strips
to mask truck wheel treads, cut a piece of masking tape a
few inches long and stick it to a piece of plate glass or other
smooth surface which won’t ruin the adhesive. Set up your pair
of triangles and then simply cut one strip after another, mov-
ing the sliding triangle along the fixed triangle to create parallel
cuts and thus parallel strips of masking tape.
Making two lines perpendicular to each other is also easy with
a pair of triangles. One method is to align one triangle with the
base line and then simply place the second triangle in a right-
angle position to it. However, I always use a variation of the
The tool shed - 5
MRH-Aug 2013
