How do you fill in deep holes in wood?

Whether you have a new project that requires filling in large gaps or cracks in wood, or if you’re trying to repair an existing piece of furniture, there are many different products that can help.

We’ll go over a few different types of wood fillers to help decide which one is best for the job at hand!

How do you fill in large holes or gaps in wood?

There are several different types of wood filler that you can use to fill in large holes or gaps in your wooden furniture.

The most important thing is to make sure that you select one that is compatible with the material on which you’re working, as well as the type of finish you plan to apply afterward.

Fillers come in pails and tubs, tubes, and cartridges; they are applied using putty knives or trowels by hand or power tools such as routers and sanders.

Once you’ve selected a filler and have it ready to go, put some tape over the area around where it will be applied so nothing gets into unwanted areas while it dries (you don’t want anything getting stuck!).

Once this has been done successfully without any problems whatsoever (say no more!), start applying your chosen adhesive product with a putty knife until there’s enough covering all sides of each hole/gap at least halfway up its height for maximum strength when drying time passes by quickly but slowly enough for everyone involved parties involved.

What product fills in holes in wood?

The first step to filling in deep holes in wood is to determine what product will be most effective. There are several options that can be used for this purpose, including:

  • Water-based wood filler (polyurethane)
  • Epoxy
  • Polyester resin
  • Plastic wood

How big of a gap can you fill with wood filler?

How big of a gap can you fill with wood filler? The answer depends on the type of hole you’re trying to fill, but generally speaking, a small gap can be filled with just one application of wood filler.

If your gap is larger than 1/4″, it’s recommended that you apply two or three layers to ensure that the surface remains smooth.

The amount of filler needed for each application will vary depending on how large or deep the hole is—the idea is always to use as little filler as possible while still achieving a strong bond with your surrounding material.

What to use to fill holes in wood outside?

  • Wood filler. The most common option for repairing holes in wood is a wood filler, which can be used to fill both small and large holes. These come in white or natural colors and dry quickly, so you can reapply paint as soon as it’s dry if you’re working on a piece of furniture.
  • Wood putty. Wood putty is another common option that can be used to fill small holes and scratches in wooden surfaces like cabinets and doors, but it won’t work on larger areas or deep scratches like those found on floors or walls. It’s also helpful for repairing furniture with damaged veneers because it won’t show through once painted over.
  • Wood caulk: If your project involves filling deeper gouges such as those made by nail guns or other power tools, then using caulk may be your best bet since this spackle product will expand when applied around corners without cracking or flaking off like some other materials might do under pressure from moving parts (e.,g., hinges) over time.”

Is it better to use wood filler or caulk?

Caulk is a better choice for smaller gaps. It has a higher viscosity than wood filler, which means it won’t run down the sides of your project if you get it too close to the edge.

Also, caulking is more flexible than filler and can fill deeper dents and holes in wood.

If you have a large gap to repair then wood filler might be your only option.

How do you fill a large gap?

If you have a large gap, you’re going to want a filler that is flexible and resilient. This will allow the wood filler to fill in the space without cracking or shrinking.

It should also have a strong bond with your wood surface so it will stay in place over time.

A good quality filler should be water resistant as well, so it doesn’t crack when exposed to moisture in its environment (if this happens after sanding and painting).

Finally, when choosing a filler for large gaps on your project: make sure it’s easy for you!

How do you fill a 2 inch hole in wood?

The best way to fill a large hole in wood is with a wood filler that’s designed for large holes. These filters are usually two-part epoxies, one resin, and one hardener.

They will be labeled as such on the packaging and have instructions on how to mix them together.

When you’re ready to apply the filler:

  • Mix the two components of your epoxy thoroughly according to package directions
  • Use a putty knife or similar tool to scoop up some of the mixed epoxies and apply it into your large hole
  • Continue until your entire hole is full with thick layers of epoxy—you want all parts around and inside your hole filled completely so there’s no space left between them (this might take more than one application!)
  • Let dry overnight—check back in 24 hours if possible before sanding down any rough edges left from this process!

What is the strongest wood filler?

When filling holes in wood, there are three main things to consider:

  • The filler should be made for the type of wood you’re working with. Some fillers only work on softwoods, while others will dry hard enough to take sanding and polishing. Some can be stained, some cannot. If you don’t know what kind of wood your project is made from, contact the manufacturer or supplier and ask; they should have that information readily available.
  • The size and shape of the hole or gap will determine how much filler you need—and therefore how long it takes for that particular type to dry completely enough for sanding and polishing (if you plan on using a finish). For large gaps that won’t be visible after finishing—such as between two pieces of furniture side-by-side—you can use an off-the-shelf compound like Liquid Nails (available at hardware stores) since it dries very quickly (in just a few hours) so that sanding and staining can happen sooner rather than later; however if what’s under those adjoining pieces happens to be large chunks missing out on all four sides then this won’t do anything except make one solid mass instead two separate ones separated by space which would require more material in order not just fill but also adhere everything together again properly so as not create weak points where stress could cause damage later down road when either piece.


There are many different types of wood filler products and the best one for you will depend on the size and location of your hole.

If you’re looking for something that will fill in small holes or gaps, then a two part epoxy might work well for you. You can also use this type of filler outdoors because it’s waterproof!

However, if your project requires something stronger than epoxy then we recommend using polyurethane since it has great adhesion properties and doesn’t shrink when it dries out like some other fillers do when exposed to moisture levels above 70% RH (relative humidity).

Photo of author

Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

Leave a Comment