When using TotalBoat FixWood epoxy putty, there is no specific maximum thickness limit for application. However, it is recommended to apply FixWood in stages for voids deeper than 1 inch. This approach allows for sufficient working time as larger volumes cure faster due to the nature of epoxy products. While FixWood exhibits minimal shrinkage, applying it too thickly may lead to potential cracking upon hardening.

For optimal results when applying thick layers, it is advisable to wait 6 hours between stages. Lightly sand the area with 80-grit sandpaper before adding another layer of FixWood. One risk of thick applications is the possibility of the epoxy becoming hard but brittle if excessively thick, even if applied gradually in stages.

Concerns regarding exothermic reactions and excessive heat generation are generally not significant issues when applying FixWood at these thickness levels.