It's not a very natural sentence, though it's possible. It means something like, "I do not want you to be engaged in the making of this machine in 24 hours' time". There is perhaps a suggestion that the speaker wishes the other person to have completed the making of the machine before the specified time.
The continuous infinitives are natural in this sentence: I must start getting the meal ready now. I don't want to be cooking when the guests arrive. I want to be sitting sedately in the parlour ready to welcome them.
Interested in Language