I extended the fenders on my adventure rig
https://feddit.uk/post/45548309
Cutting board extensions is exactly what I did on my first ebike build 12 years ago because the fenders were way too whimpy. Well done sir!
I’m surprised how difficult it is to find just plain plastic/rubber sheets than can be used for this kind of crafts. There’s plenty of plywood, sheet metal, glass and polycarbonate/acrylic available but no plastic. I stumbled upon these cutting board by pure accident while looking for something else.