Breaking a canopy is a bad day. The good news is that it is not as bad
as you may think. Over the years I have tried every fix possible on
canopies. Here is what works best.

ACRIFIX 2R0190 X 4oz (+ catalyst) - VERSATILE (hardener) available at
Wings and Wheels. Hands down the best.

http://www.wingsandwheels.com/page37.htm

So what you do is this. Take out your dremel and sand/grind two 45
degree groves along both sides of the crack. The carefully wet sand
inside the crack grove with 320 and then 800 and then 1000 until any
tooling marks are removed and the surface is smooth. Tape up the back
if you go through. Then fixture the canopy crack grove up and level.
Apply the ACRIFIX (use the two part and nothing else) liberally. Next
day sand mask off the damaged area and sand the cured material almost
flat using 320 wet and dry. Then work down the grit list to Micro
Mesh. If there is still some crack left on the inside of the canopy
grind out this area from the inside and wet/dry repeat the process on
the inside. This process works very well (as in near perfect) but is
not for the faint of hand. Your on your own with the blue dye.

Try this process on a test plexy part to get some experience. If the
canopy crack is near the edge it normally goes under the gel coat trim
along the canopy edge so go after this when dremeling. Then, when
finished, mask off the canopy/gelcoat edge and paint on new gelcoat
and sand it to perfect.

John Seaborn
A8