It is important to keep in mind that unlike wax patterns, QuickCast patterns are mostly hollow and are lighter than the slurry solution in which they will be dipped. The buoyant force experienced during dipping places additional stresses on the assembly and can damage it. Flow-coating the slurry over the pattern rather than dipping very large patterns is one way some foundries have found reduces the difficulties of buoyant assemblies. Use care in dipping the assembly. As mentioned in the Pattern Assembly section in this guide, additional gates or runners to the pattern will strengthen the assembly and make it better able to resist buoyancy forces.