After pressing only the inside veneers on the top and sides, I work the veneered faces flat with a no. 62 with a cambered iron. I'm also shooting for consistent thickness for the top and side panels, so lots of stopping to check the thickness with calipers. If you look closely in the foreground you can see some numbers written on the panel - those tell me the thickness at points on the top panel. All three panels are now within .002" to .003" of eachother.