What is a good filler for wood?

When you need to fill, repair, or restore wood furniture or walls, there are a lot of questions to consider. What is the strongest wood filler?

What is the best thing to fill holes in wood? How thick can wood filler be applied? Do you use a wood filler before or after sanding? These and many other questions are answered here.

What is the strongest wood filler?

Epoxy resin is the most durable wood filler, but it can be expensive. The two main types are polyurethane and polyester.

Polyurethane epoxy fills in cracks and holes faster than polyester and dries more quickly as well; however, it can sometimes react with moisture in the air to form bubbles or a white powder. Also, depending on the brand you use, you may need to choose between fast-curing or slow-curing (24 hours) options when working with this type of product.

Polyester resin is less expensive than polyurethane and can be tinted if desired. It tends to have fewer reactions with moisture in the air, but it requires about three days for curing—compared to about one hour for curing time for urethanes—and does not have as high a strength rating as its counterpart.

In addition, some users report that they have trouble sanding down surfaces coated by this substance due to its hardness at room temperature compared to other wood fillers such as sawdust or glue.

What is the best thing to fill holes in wood?

If you want to fill holes and cracks in your wood, there are a few options. You can use a wood filler, but it is not the best option (it will eventually crack and peel).

You can also use wood putty, but again this isn’t ideal as it will shrink and expand over time; this may cause more problems than it solves.

The best options are wood patch kits or even just plain old spackling paste without sanding down the surface first. These will last much longer than either of the other choices and won’t cause problems later on!

What is the best filler to use on wood?

To answer this question, we need to define what we mean by “best.” If you’re looking for something that will fill a deep gouge or crack in your project—like if you’re repairing a piece of furniture—a good choice would be epoxy putty.

Epoxy putty can fill large gaps and is easy to shape. For example, if you want to make sure that all the pieces on your table have an even finish, try brushing on some epoxy putty first and then sanding it down after it dries completely. This way, all surfaces will have uniform texture and coloration!

If you need a cheaper option that still gets the job done well enough (but won’t be as permanent), consider using sawdust mixed with glue; this works great if there are just some minor nicks in your wood surface rather than anything major.

You could also apply some regular paint over top of these types of repairs if they don’t hold up very well over time—and remember: no matter what type of repair job meets your needs best right now; there’s always something new coming out onto shelves at stores like Home Depot or Lowe’s these days so keep watchin’ yer back pocket while shopping around because who knows what kind of cool stuff might pop up next year.

How do I choose a wood filler?

Here are the most important things to consider when choosing a filler for your wood projects:

  • Ease of application. When you’re working with wood, it’s important that the product you use is easy to apply and sand. Some fillers can be messy or difficult to work with, so choosing one that is designed specifically for your project will save you time and effort in the long run.
  • Filler compatibility with specific types of wood. If you’re working with a certain type of wood, make sure that there’s a filler available that matches its characteristics—for example, if you’re using cedar boards for furniture building purposes (as opposed to say… mahogany), then look for cedar-specific fillers rather than generic ones made from other materials like epoxy resin or polyester resin (which may have different properties).

What’s the difference between wood putty and wood filler?

The first thing to know is that wood putty and wood filler are both made of wood flour, but the putty has more filler in them.

Wood putty is designed to fill in small holes and dents. It’s a little softer than regular glue, so it can fill in even tight spaces around nails or screw holes.

Wood filler is used for larger holes and cracks—and also for filling gaps between boards on furniture when you need a very smooth finish (so you don’t see the seams).

How thick can wood filler be applied?

The thickness of the filler should be applied in thin layers. If the wood filler is too thick, it will not dry properly; if it’s too thin, it won’t fill the crack.

It is a good idea to start with a very small amount of wood filler and work your way up as necessary.

To apply wood filler, simply squeeze some onto an old t-shirt or rag and wipe it into place along any cracks or holes in your piece of furniture.

The trick is to get as close as possible without actually touching the surface of what you’re working on so that you don’t end up smearing off some of the original stains when applying pressure from above with your fingers—just use enough pressure to spread out that layer evenly across all sides. Then wait for about 30 minutes for things to dry before applying another layer if needed!

How do you fill deep cracks in wood?

To fill a deep crack in wood, use a filler that is thicker than the cracks. Fill the crack with your chosen product and let it dry. Sand the filler to match the surrounding wood before applying a coat of varnish or lacquer.

Do you use a wood filler before or after sanding?

It’s always best to sand first, then apply filler. It’s easier to sand down excess filler than it is to apply more than you need and then remove it later.

However, if you’re using a product like spackle that has no real sanding step and thus no way for you to know how much filler will be necessary for the end, then it might make sense for you to apply your filler before sanding instead of after. Once your wood is entirely filled in with wood putty or whatever else you’re using as a filling agent (if anything), there’s no reason not to skim over top of that area with some 220 grit paper or an orbital sander just enough so that the high spots are removed but not so much as to remove too much material.

That said, our recommendation would still be: start with a minimal amount of white paint; then follow up by brushing on another coat of colored paint on top (ideally something semi-transparent), and finally, use either an orbital sander or hand-sanding paper like 220 grit for removing any excess white paint from around those edges where we want only the colored stuff showing.


Choosing the right wood filler is an important part of your project, and we hope our guide has helped you understand the difference between all these options.

Whether you choose to go with putty or filler depends on your needs, but both can help repair holes and cracks in wood furniture!

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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.

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