3 axis contoller for a 2 axis machine

hi im new to here could anyone help me please, i am building my own laser engraver and want to use a 20w laser diode module. my question is can you use a 3 axis control board on a 2 axis machine if the z axis is not conected. also what control board is best for a 20w laser module needs limit switch connections on board.
many thanks in advance

You can use a 3 axis control board having only 2 axis, there are no issue on that. A good controller is the MKS DLC32

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