The SPADs (simple plastic airplane designs which I really like) all use the cutting boards, and a lot of them were designed for the combat. I used a cutting board on a control line one that I made, and broke it when I didn't quite pull out of a horizontal 8, and it broke. It tore off the tank too, and if there was a throttle it likely would have ruined the servo arm as well. I made a new one out of 1/4" Lexan because I didn't have a large enough piece of cutting board. The Lexan flexes so much, that bubbles form in the fuel line. I am sure it would break in a crash though, but hopefully I won't test that out again. Maybe nylon motor mount bolts? if they don't back out or break from running. I had been thinking of using aluminum bolts to hold on mufflers, not that I crash that much, but I have got a lot of used ones with broken flanges on the motor, especially Supertigers with the big heavy muffler they use.