Hi everyone, I have 2 questions about cutting CF preperg: 
1) what would be the best way to cut complex shapes out of an uncured CF prepreg sheet? I have access to kevlar scissors and an electric shear, but they aren't ideal when I'm trying to cut inclusions within the fiber (let's say like cutting a donut in the fiber - cutting a hole in the middle is difficult with shears). Is there anything like a boxcutter for CF prepreg? 

2) For post cure cutting of a laminate/part, what would be the best or least damaging way to cut its shape, without compromising on structural properties? Currently using a dremel saw max with a diamond blade, does a decent job but my part delaminated under loading, so was wondering if there was anything better (like water jet maybe?)

Thanks!