i have endured the progressive pain of dgenerative spinal disease since first diagnosed in '85. my hubs built my table for me. no calculations ..just what height was comfortable for me to work. i need to limit bending over because of excruciating pain. so ...he had me stand & measured where the top of table needed to be to accomadate my cutting & my standing to sew. i stand to sew, prolonged sitting causes extreme pain. whomever is building your custom table might try doing as my hubs did. i am short, and my table is a little low for some of the people who have sewn with me, but it's perfect for me.