We offer a Lifetime Guarantee against any manufacturing defects that lead to cracks / leaks. These forms were designed, built and tested to withstand your resin projects allowing you to hit the form with a soft mallet and not have them break overtime.Our warranty does not cover any defect caused by improper use of our moulds and the products used with them.We recommend using Ecopoxy Flowcast or Super Clear Deep for these molds. We can not honour the warranty if you use table top/shallow pour epoxies.