No,I would'nt say at all that I work any longer in one spot I would say that my quality of clay has gone up because it always stays flat. so w/ a good shearing lube its minimal effort once you "break it in".While the other guys in the shop are scared of marring they work twice as hard because of how the clay works absorbing the fallout etc...I can hear the clay scratching the surface many times w/ it staying flat(clay sponge) at all times it allows you to cover more space (that I see) my clay jobs are quicker than the other guys(at work) and I cover more space it works great for us taller guys working on the tops of cars,suv,trucks..etc the just as strong......