how to use sawdust for wood filler?

Do you Have trouble making your new woodwork fit together like a professional? You’re not alone—a lot of people have trouble with this.

The good news is, it’s easier than you think! By using sawdust as a wood filler, you can make sure that your joints are smooth and seamless. Just follow these simple steps:

What can I mix with sawdust to make wood filler?

Sawdust and glue

When you mix sawdust with glue, the result is a lightweight filler that dries as hard as wood. This combination works well for filling holes and gaps in furniture, but it doesn’t have much strength compared to other fillers. It’s also difficult to sand down once it has dried.

Sawdust and polyurethane

This combination is similar to the one above, but using polyurethane instead of glue will give your filler more flexibility once dry.

It will be easier to sand down after drying than an all-sawdust filler would be and will provide better adhesion when sanding, which makes it perfect for patching larger areas on your furniture pieces

Can you use wood glue and sawdust to fill gaps?

No. Don’t use wood glue to fill gaps in wood or for any other purpose, especially not as a filler. Glue works by bonding with two surfaces that are held together under pressure, but it is not strong enough to withstand the repeated stress of being pressed into gaps and cracks.

Sawdust doesn’t work well as a filler because of this tendency toward failure under pressure, either; it will crumble easily in your hands as you try to apply it and make the problem worse than ever before!

Can I make my own wood filler?

You can make your own wood filler. You will need to use sawdust and glue or polyurethane to make it, but the consistency of the filler depends on the consistency of the sawdust.

If you want a very soft wood filler that will not require sanding, then use coarse sawdust. If you prefer a hard-setting wood filler that can be easily sanded, use fine sawdust.

Can you make wood filler with sawdust and polyurethane?

No. While you can mix the two together and let it sit for a while before applying it to the wood, polyurethane is not a glue and will not stick to the wood.

Polyurethane is also not a filler; it will not fill gaps or cracks in your furniture or walls.

What to use to fill cracks in wood?

  • Using a wood filler: You can use a wood filler to fill cracks in your wood. The key is choosing the right kind of filler for the job, and there are several options to choose from.
  • Using sawdust as your filler: Sawdust is a popular choice because it’s cheap and comes in a wide variety of colors, so you can match it closely to the color of your existing finish. It also dries hard, which makes it useful for filling large gaps or deep gouges that need more than just basic filling power.
  • Using glue as your filler: Glue is another option for filling holes in woodwork; however, use caution when deciding whether or not glue is appropriate for this project! You may not always want to use glue because it can be difficult (and messy) to remove once applied – especially if your repair was done hastily without proper preparation beforehand.”

How do you fill large gaps in wood?

If you have a large gap to fill, such as a hole in the wood or between two boards, you can use one of these techniques:

  • Putty knife. You’ll want to dampen the putty knife before using it. Then rub the sides of the putty knife over the edge of your gap until it’s completely filled.
  • Damp cloth or sponge. Choose a cloth that’s damp enough to take some moisture out of your sawdust mix but not so wet that it will soak through your wood too much when you apply it with pressure—this is where trial and error come into play! Add more sawdust if needed and repeat until your gap is filled all around (don’t forget about any gaps on top).

How big should a wood filler gap be?

Look at the size of your gap and measure it. Then look at the amount of sawdust that you have available, and figure out how much filler you need for this particular gap.

If it’s a large gap, you’ll probably need more than a typical amount of sawdust to fill it up. If it’s small, then maybe just some sandpaper will do. But if it’s in between—a medium-sized gap—you can use normal amounts of filler and sandpaper (or whatever else).

How do you make wood look seamless?

This is great news for both DIYers and professionals alike. The most important thing to remember is that the filler has to match your current wood color.

So if you’re trying to make a seam appear seamless on an oak floor, don’t use pine sawdust or pine glue—it’ll just look off. It’s best to go with something like walnut or cherry.

The second most important thing is that it’s important not only how well you blend in your filler but also how evenly it applies across the surface of your project.

A good rule of thumb: start by applying it in small sections (6×6 inches), then build up from there as needed until all seams are filled appropriately.


As you can see, sawdust is a great alternative to polyurethane. It’s easy to find, it’s cheap and it can be used in many different ways depending on what type of project you are working on.

The best part about using sawdust as filler is that it does not require any special tools or equipment other than what you already have in your garage!

Whether you plan on using this method for small repairs around the house or something more extensive like building furniture from scratch; just remember that patience is key when applying anything new because there will always be some trial and error involved with anything new we try out.

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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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