need help with grooming table

My son built me one out of 4x4 legs, it measures about 2 foot wide by 4 foot long. Has a plywood top, he reinforced the sides with 2x4's. I got a couple of bath mats for the top. He used the hole drill to put the grooming arm into. It works pretty good, it is very heavy, and I don't move it much, it pretty much sits in the basement corner, and I use it to blow dry the big dogs. I regularly groom Berners and Huskies, and it keeps them pretty well put.