I agree with @pontiac428. Usually, these are set up with various safety or limit switches all in series. So if any of them go open circuit the machine shuts down. So you can wire in parallel to defeat it, but it means you have to access the wires and then have dangling wires/parts or do more work. I also agree that it is sometimes nice to be able to defeat the interlock. I have been thinking about making the fingered part to fit in to the one on my lathe.
But, I saw a little kid get is shirt sleeve caught in a motor belt of his father's machine and it pulled him right in ... so that the flesh of his arm was caught up. Not nice to see. Fortunately, he was only bruised up and not cut up, but still hurt and very scared. So work with a cover! It is not always just yourself that you have to look out for. Also, it is not always an issue of getting caught in the gears etc. Sometimes debris, such as grease or belt fragments, flies off and can get into unprotected eyes .... even of shop visitors.
But, I saw a little kid get is shirt sleeve caught in a motor belt of his father's machine and it pulled him right in ... so that the flesh of his arm was caught up. Not nice to see. Fortunately, he was only bruised up and not cut up, but still hurt and very scared. So work with a cover! It is not always just yourself that you have to look out for. Also, it is not always an issue of getting caught in the gears etc. Sometimes debris, such as grease or belt fragments, flies off and can get into unprotected eyes .... even of shop visitors.