I have been stalking this sight for over a year and spent a large amount of time in the archives researching this topic. I wasn't able to find anything regarding anyone having issues with Lexan bills becoming brittle and breaking. I made a bunch of lures over the course of a year and sealed them with Epoxy. I never coated the bills besides the connection to the lure. The issue I found was the lure bill became brittle after being on the boat or in the tackle box. Does Lexan become less sturdy over time or is it because of the heat when I was cutting them out using a Dremel disc?