ORIGINAL: cgroen

When I had the second flight on my Viperjet, the canopy was destroyed in flight (pictures a few pages back).
I got a new piece of plastic from Skymaster (quick delivery!), and installed it, no problem.

However, today when cleaning the workshop, I looked at the old plastic, to see if a few pieces could be saved for other purposes, and I noticed that the plastic is VERY brittle at the edge where it was glued onto the canopy frame, just the slightest touch/twist, and it cracks! I cut a piece of it out, and tried on that, holds very well.
So the glue Skymaster uses for fixing the glass to the canopy frame makes the plastic brittle, and I wonder how long the canopies out there will hold ??
Any of you seen similar stuff ?