> A key aspect of physical hobbies is that there is no backspace key. Getting a hobby lathe has taught me this VERY well. Something about running a machine tha

> A key aspect of physical hobbies is that there is no backspace key. Getting a hobby lathe has taught me this VERY well. Something about running a machine that removes a lot of metal very quickly but where your end goal is to be precise to 0.05mm makes you really double check your next move. Bumping a hand wheel is enough to ruin hours or possibly days of work.