2b: The three
stages of Kristal
Klear. These win-
dow panes are
1/4” square.
Top left is the
first attempt.
Top right has too
much material
applied, and both
attempts show
trapped air bub-
bles. The third try,
at bottom right,
has cured for
about 2½ hours,
and will eventu-
ally be clear.
the edge of the frame and draw it across from one side to the
other. It gives you a fair amount of working time. Kristal Klear
can be washed off while it remains cloudy. When it sets up, it
will be clear, and will not yellow over time.
Making the windows takes a bit of practice, so don't expect the
first try to be perfect. Some openings are just a bit too large for
the liquid film to stretch. The more material you get in there, the
longer it will take to set up and turn clear. A tool wider than the
standard toothpick can help.
At $4 for a small bottle, it's not a big risk to try out.
An alternative technique for bigger openings is to save flat
pieces of the thin clear plastic that is everywhere in packaging,
2b
