02-07-2020, 02:13 AM
antfos It would pay to take note of Squeadk's suggestions, as he used to do all this for a living. If you are still determined to use springs (you would still need some high-density foam and sofrt foam as well as the necessary hessian, furniture webbing etc, a lot of work & expense - it may reassure you that many Seven bodies built here in Australia used the spring set-up. Or when the Float-on-air cushions soon gave up they were enevitably eplaced by springs with no problems. Good Luck & Cheers, Bill in Oz