So you’ve purchased a race car, motorcycle, airplane, or boat? Congratulations, hotshot. But before your maiden voyage, know this: Your vehicle has important, see-through parts made from an acrylic ...

Q. I have a dirty-looking area on bottom of my acrylic bathtub … and am sure it is from my hard water. The tub is just now being used daily. I know I cannot use regular products like CLR or Lime-A-Way ...