text: Polyester resin has the following disadvantages: 
  # Strong styrene odour
  # More difficult to mix than other resins, such as a two-part epoxy
  # The toxic nature of its fumes, and especially of its catalyst, MEKP, pose a safety risk if proper protection isn't used
  # Not appropriate for bonding many substrates
  # The finished cure is most likely weaker than an equal amount of an epoxy resin