Yeah a bandsaw.
I mean ... he could use table top 6" bench sander to do it... but nah... that wouldn't be as hard nor risky. He could just buy an old school boring bar.. they're on eBay last I looked ,but nah.. let's transform the bench press into something else than what it's designed to do and cross our fingers . ..and that's fine , be can do it..but **** ..when I see this "i'm going to teach the teacher's" **** and the sore comebacks I'm reading? ****'em.