how to use Minwax high performance wood filler?

I recently got a question from someone who had just purchased Minwax High Performance wood filler and was curious about how best to use it.

I thought, “Why not write a blog post on this?” So here we are! The Minwax High Performance wood filler is an excellent product that comes with everything you need to repair your wood.

It dries quickly and creates a hard surface that stands up well to moisture and wear (including pets!).

This post will cover how to use the Minwax High Performance wood filler and what questions are best left unanswered if you want your project to turn out well.

Can you use Minwax High Performance wood filler without hardener?

Yes, but it’s recommended that you use a hardener to increase the filler’s strength and help ensure a smooth finish.

If you don’t have the time or patience for additional drying time, this could be a deal breaker for you. You should also know that the amount of hardener needed varies depending on how much filler you are using.

How long does it take Minwax High Performance wood filler to dry?

It takes about 24 hours for the Minwax High Performance wood filler to dry. You can sand it after it has dried, but you should wait at least 48 hours before painting over it.

Is Minwax a good wood filler?

Minwax wood filler is a good choice for making repairs or filling cracks and holes. It is suitable for use on both interior and exterior projects, including furniture, cabinets, doors, walls, and floors.

The filler dries quickly to form a hard surface that can be sanded smoothly when dry. It also has excellent moisture resistance so it will not swell or crack during use in humid areas such as bathrooms or kitchens.

The fine texture makes Minwax wood filler easy to apply using a putty knife or trowel (or another tool of your choosing)

How does Minwax wood filler work?

Minwax High-Performance wood filler is a two-part epoxy that cures to a hard, sandable surface.

The first step is to mix Part A and Part B together in equal amounts (1:1). You can use this pre-mixed formula or you can mix your own by combining equal parts of each part.

The mixing ratio will depend on the type of project you’re working on; if it’s large enough, you might need more than one bottle of each component.

Once mixed, apply the mixture with a putty knife or scraper until it becomes sticky and hardens within an hour or so.

Why does my wood filler keep cracking?

If you’ve ever used wood filler, you know that applying it isn’t always easy. Wood filler is a very forgiving product, but if you don’t follow these simple rules when using it, your job will take longer than necessary and the results won’t be nearly as good:

  • Clean surface: Make sure there’s no dust or dirt on the area where you plan to apply your filler. Dust particles can prevent filler from adhering well and make it crack more easily.
  • Dry surface: It’s also important to wait until any moisture in the area has evaporated before beginning work with wood filler—this can take anywhere between 30 minutes and several hours depending on how humid the room is where you’re working at the time (and how rainy or snowy your region was lately). If there’s still water inside of a deep-set crack in drywall after 24 hours (or less), wait another day or two until all moisture has dried out before applying any finishing products like paint or wallpapering over top of them; otherwise, they’ll just absorb into those gaps again!

How do you smooth out wood filler?

You can smooth out the wood filler with a putty knife or a sanding sponge. If you choose to use the putty knife, place a small amount of wood filler on your work surface and spread it around with your finger.

Then, cut off a small piece of the putty knife and smooth it over your filled area until it is level with the surrounding surface.

If you have extra time to spend, there is also an option for smoothing out your wood filler that requires more effort but produces better results: wet sanding with 150-grit sandpaper.

Do you have to sand wood filler?

In the case of Minwax High-Performance Wood Filler, you should sand before applying a second coat.

The filler is already smoothed out and sanding it before adding another layer allows you to have a smoother finish when dry.

If you are using other types of wood fillers, they may not need as much sanding or no sanding at all. You can always use fine grit sandpaper if you want to get a smoother finish

Can you use wood filler on large gaps?

You can use wood filler on large gaps. To fill the gap, use a putty knife to apply the wood filler and smooth it out with the edge of your paintbrush.

Let the wood filler dry completely before sanding it down with 150-grit sandpaper. When you’re done filling in any holes or cracks in your project, prime it with an oil-based primer before painting it with latex paint.


Now that you know how to use Minwax wood filler, it’s time to get started! Follow these easy steps and enjoy the satisfaction of a job well done.

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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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