I just commissioned my new Powermatic 3520B after turning on a Delta DL 40 for the past 19 years. What a pleasure: It is solid, stable, quiet, and the variable speed works great. I was about to build a between legs shelf as suggested in the Powermatic manual but am having second thoughts. I’ve been struck with the ease of shavings cleanup without a shelf in the way. I am wondering if I would regret the interference of the shelf if I put one in. Of course I could always use more storage space. Has anyone wished they hadn’t bothered with under lathe storage?