When should I replace the casters on a drafting chair?

Replace drafting chair casters when they show flat spots from rolling on hard floors, when the wheels no longer spin freely, when the stem is bent causing the chair to pull to one side, or when rubber or polyurethane coatings have cracked and are leaving marks on the floor. Casters are inexpensive and easy to replace — they press-fit into the base holes and can be swapped in minutes without tools. OfficeFurniture2go.com can source replacement casters for most commercial chair brands — call 1-800-460-0858.