Can TotalBoat Traditional 5:1 Fast and Slow Hardeners be blended to create a customized medium hardener? Eric Boudreau April 01, 2022 14:54 Updated Yes. TotalBoat Traditional 5:1 Fast Hardener and 5:1 Slow Hardener can be blended to create a customized medium hardener speed. Related articles Can chop strand mat be used with epoxy? What is the difference between using a pressure pot or a vacuum chamber when casting epoxy? Can TotalBoat TableTop Epoxy be applied over TotalBoat ThickSet Epoxy? What are the best brushes for varnishing? Should I use a 5:1 or a 2:1 epoxy system? Comments 0 comments Article is closed for comments.