There have been many debates about this in other forums. I have found the important thing is to not surprise my painter with hidden holes (that sand can trickle out of after blasting and during the spraying...) Really if the frame is well cleaned out (a question with any frame, production of hand done) then it shouldn't matter much. As long as moisture can't get in! This last bit is the biggy as moisture gets past bearings and posts all the time. Having access and the ability to wash out, dry out and induce Frame Saver keeps the future options open. Andy.