Shutterstock/Jiranart Aonnoum
Why do loose screws only get looser and not the other way round, even if there seems to be no resistance to the latter?
Geoffrey Clark
Douglas, Isle of Man, UK
I can’t agree that screws always work loose. As a mechanic and general odd-job person, I can assure you that screws and bolts do become tighter – that is why penetrating oils, notablyWD-40, were developed.
I have damaged screw heads and bolts in efforts to release them and had to drill them out. I have had more problems with too-tight bolts and screws than I ever had with loose ones.…
