can you use wood hardener on wood filler?

I love woodworking. It’s an incredibly rewarding hobby, and it can be a great way to add value to your home. But sometimes you run into problems that are a little more difficult to solve.

That’s when I turn to my fellow woodworkers for advice!

In this post, we’ll explore some common questions about using wood hardener on wood filler: Can you put wood hardener on wood filler?

How can I make wood filler stronger? What can I add to dry wood filler? Why does my wood filler keep cracking? And much more…

Can you put wood hardener on wood filler?

The answer is yes, you can. If you want to strengthen your wood filler and add more strength to it, then it’s best to add the wood hardener before applying the filler.

You can also use wood filler as a gap filler for gaps between two pieces of wood that are too big for nails or screws.

If you choose to apply the hardener before adding your wooden fillers, make sure that you do not mix them together in large batches because this will cause bubbles in the mixture which could lead to them leaking out later on during application or drying process.

How can I make wood filler stronger?

If you’re looking for a way to make your wood filler stronger, try the following techniques:

  • Use a stronger wood filler. Wood fillers come in different strengths; for example, “fine” is the weakest and most watery, while “coarse” is more resistant to damage and has a higher filler content.
  • Use wood hardener. Wood hardeners are chemicals you apply to wet wood filler that makes it more durable and less likely to crack over time.
  • Use glue or epoxy with your wood filler. Glues will bond together the fibers within your filler so they don’t become dislodged by moisture or movement; epoxies can also do this but may not be as strong or flexible as regular glue when dry. This is especially helpful if your project involves painting over the material later on down the line (for instance, if you’re making an outdoor furniture set).

What can I add to dry wood filler?

You can add wood putty, wood glue, dry wood filler and hardener to the dry filler.

Wood filler is made from sawdust or other ground-up fibers mixed with resin. When applied to the surface of your project, it’s flexible enough to fill gaps in furniture or walls.

It dries quickly and doesn’t require sanding before painting or staining it because it bonds directly to the surface when you apply it.

You can make your own by mixing sawdust with an equal amount of white glue (not Elmer’s). This makes a fast drying compound that you can use as soon as it’s cured without waiting for any moisture to evaporate out of the mixture first like some other types of homemade concoctions might require if they were placed outside during summer months where temperatures reach above 80 degrees Fahrenheit regularly; however, this method isn’t applicable if you need more than just one small job completed quickly since making large batches takes time due mainly because there will be fewer short cuts taken when cutting down on costs by reducing overall production costs per unit sold.”

Why does my wood filler keep cracking?

If a wood filler keeps cracking, there are several reasons why. The first thing to check is the condition of your wood filler.

It may be too dry or too old. If you haven’t used it in quite some time, it should be discarded and replaced with fresh material.

Next, make sure that you’re working in an area that’s neither too hot nor too cold for proper curing of the product.

If it has been exposed to excessive heat or cold, this can also hinder its ability to adhere properly to the wood surface without cracking as well.

It’s also important to ensure that your chosen brand of filler is suitable for use on its intended project; some fillers are meant only for interior projects while others are intended specifically for exterior applications—check the label before purchasing!

How do you mix wood filler with hardener?

The ratio of hardener to wood filler will differ depending on the brand, so always follow the instructions that came with your product.

To mix hardener and wood filler together, simply add small amounts of each to a container until you reach the desired consistency.

Once mixed together, apply a thin layer of this mixture to your project using a putty knife or trowel. Let it dry for 24 hours before sanding down any rough patches or filling in any holes with more wood filler/hardener mixture.

Is wood filler as strong as wood glue?

Wood filler is not glued. It’s a filler, which means it fills gaps and holes in your wood without bonding to it. Glue adheres to two surfaces and forms an adhesive bond between them.

If you use wood filler on the same piece of wood, however, it won’t hold as well because there’s no glue holding it together.

If you want to make sure your piece of furniture stays intact without adding any extra weight or thickness, use drywall screws instead of nails or brads when assembling pieces together (drywall screws are smaller than regular screws).

They’re stronger than nails or brads and will help prevent breakage along the seams where panels meet.

Does wood filler have any strength?

While wood filler is meant to fill in holes and cracks in wood, it’s important to understand that it doesn’t have any strength.

While you can apply a good amount of pressure, the filler will give way before the wood does. This means that small amounts of force won’t break through your fillings no matter how hard you try.

Wood putty is stronger than wood filler because it has more adhesive properties than just being able to fill gaps between pieces of wood.

When using wood putty on furniture with lots of curves and other intricate details, it’s worth being careful not to apply too much pressure or else you’ll risk damaging your piece!

Which is better wood putty or wood filler?

Wood putty is usually a paste that you would use to fill in dents, holes, and other defects. It’s not as strong as wood filler and will not stand up to moisture or abrasion like wood filler does.

Wood filler comes in many forms—powdered or premixed with water—and has to be mixed together before you can use it on your project.

The powder form is the strongest, but you’ll have to mix it yourself from dry components: one part borax (a mineral) and three parts flour (or cornstarch).

This mixture can be sanded and painted over once dry. Premixed versions of wood filler are available at most hardware stores; these products contain water so they’re ready for immediate application without any preparation required beyond stirring them with a stick or brush before applying them directly onto whatever surface needs filling up!


If you’re looking for a strong filler, then wood filler is the one you should choose. It has good strength and can be used to repair cracks in wood.

If you want something that will look better and last longer, then wood putty or putty filler may be more suitable for your needs (although these products can still be used on drywall).

Either way, it’s important to use the right product for the job at hand so that all of your hard work doesn’t go to waste!

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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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