When working with wood, there is always the risk of cracks or splits, especially when driving screws or nails into the wood. That’s where wood filler comes in. It can be used to fill in any cracks or divots in a piece of wood. Wood fillers can also be used for open-grain woods, such as are used for flooring, where there is a chance that pores in the wood open up, which also need to be filled. Wood fillers tend to come in two primary forms. The first is a water wood filler, while the second is a solvent-based wood filler. We’re going to have a look at what wood filler is used for, as well as answer some of the key questions one might ask about wood fillers. Let’s get started.