I made a siamese 3x3x3 cube earlier today because I had 2 store cubes I never use anymore. The LLs are easy, (they can always be done in 3 looks), but the f2ls are tricky when you can only use 2-gen algs. I can't seem to find some ways to deal with some of the f2l cases.
If its not an easy case, I place a 1L corner in so it is in the right place but rotated wrong, then I am left with are 8 possible cases, which can all be done with 2-gen algs. Is there a better way anyone uses?