This guide is based on techniques shared by Matt from Next Level Carpentry. It focuses on practical methods for preparing paint-grade wood, ensuring a smooth, durable, and professional-looking finish.
Wood defects like knots, dings, and cracks are common challenges, but with the right approach, they can be repaired effectively. Matt’s detailed video covers all the essential steps for achieving flawless results when painting wood surfaces.
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What is Paint-Grade Wood?
Paint-grade wood is selected specifically for projects where the final surface will be painted rather than stained. This allows woodworkers to use boards that may have cosmetic flaws without sacrificing the strength or functionality of the piece.
Matt points out that while paint-grade soft maple is an affordable option, it often includes defects that need to be corrected. Choosing the right boards from the start helps minimize the amount of repair work required later.
Preparing for Repairs
Before beginning any repairs, careful preparation is critical. Matt demonstrates how to identify different types of defects and choose the best repair method for each.
For minor surface imperfections, quick-drying wood fillers may be sufficient. However, for larger or deeper flaws, Matt recommends using automotive body filler, commonly known as Bondo, because of its strength and ease of sanding.
A solid carbide burr is one of Matt’s go-to tools for prepping repair areas. It allows precise control, shaping the defect into a smooth, gradual transition zone rather than leaving harsh edges that could show through the final paint.
Filling the Defects
With the area properly prepared, the next step is filling the imperfections. Matt shows how to mix Bondo to the right consistency, ensuring a reliable and easy-to-sand patch.
Application involves pressing the filler firmly into the defect to create a strong mechanical bond. Matt slightly overfills the area, making sure there’s enough material to sand down flush with the surrounding surface once cured.
It’s important to allow the filler to cure completely before attempting any sanding. Rushing this step can result in soft spots or uneven blending.
Sanding for a Seamless Surface
Sanding is one of the most important phases in the repair process. Matt uses sanding blocks with various grits to level the filler and feather the edges into the surrounding wood.
For initial shaping, a cheese grater or surform plane helps remove excess filler quickly without damaging the surrounding material. This method also reduces the risk of over-sanding, which can leave depressions around the repair.
Progressively finer sanding smooths the area and prepares it for finishing. Patience here ensures the repair is invisible after painting.
Applying Final Touches
Once the bulk sanding is done, Matt often applies a skim coat of wood filler over the area. This step helps catch any tiny imperfections that might still be visible.
The skim coat is sanded lightly after drying, leaving the surface perfectly smooth and ready for primer. Proper priming helps further seal the filler and ensures even absorption of paint.
Matt emphasizes that attention to these final details makes the difference between a good-looking repair and a truly professional one.
Why Proper Repairs Matter
Skipping or rushing the defect repair process often leads to visible flaws that can ruin the look of a painted surface. Matt’s techniques show that taking the extra time to properly prep, fill, sand, and finish yields much better results.
Good repairs also add longevity to woodworking projects, helping surfaces resist wear and weathering over time. Whether you’re building furniture, cabinetry, or trim, mastering these repair skills can raise the overall quality of your work.
Learning from an Experienced Craftsman
Matt’s extensive carpentry background brings real-world techniques to the workshop. His process isn’t just about looks—it’s about creating surfaces that hold up well and maintain their beauty under regular use.
Following his advice helps new and experienced woodworkers alike gain confidence in producing professional-grade finishes on paint-grade projects.
Watch the full video and subscribe to Matt’s channel: