I got some hardware and some wood to build a bench but I haven't settled on a design yet. I am going to incorporate a leg vise and a twin screw end vise that I made, and possibly a shoulder vise of some kind. I was going to just glue together a bunch of 3" wide boards stood on edge to do the top. I want about a 30" top. In some of my research I see that some people have some problems with this due to the expanding and contracting causing the top to bow and such. I had an idea to make the top out of vertical and horizontal glue ups. One idea is to glue up 3 different tops out of 6" wide boards then laminate all of those together to end up with a 30" wide 3" thick top. My other idea is laminate 5 sets of 3 6" wide boards together then do a glue up of all of those. Would one of these methods produce a more stable top that is less likely to bow or warp with moisture change? Any thoughts for top construction or anything else for the bench.