How To Fix Uneven Wood Color After Sanding

uneven wood color after sanding

Sanding is helpful before staining, painting, sealing, and finishing wood to make the wooden surface smoother and to make wood more receptive to stain. The sanding part should do correctly to get an even color and attractive look on the surface.

In my experience, uneven color occurs mostly because of improper sanding. What should we do for the uneven wood color after sanding

Uneven wood color after sanding occurs due to over-sanding the wood vigorously without even pressure on sandpaper. You can fix getting uneven wood color after sanding by repairing and sanding the surface with light, short strokes until the wood is level. Then test the wood color by staining.

but there’s more to know about getting uneven wood color after sanding.

In this article, we’ll explore why uneven wood color occurs after sanding and how to fix that. Plus, we’ll see how to sand wood properly without getting uneven wood color with tips and tricks.

Furthermore, I’ll answer some frequently asked questions as well.

So, let’s jump in!

What Causes Uneven Wood Color After Sanding?

Uneven wood color after sanding mostly occurs due to over-sanding wood, sanding random spots vigorously, and sanding without applying even pressure on sandpaper or sanding block.

Generally, Uneven wood color can be identified after wood staining, painting, sealing, or applying wood conditioner.

Sometimes uneven wood color appears because of wood staining mistakes, but improper sanding also can be a reason for that.

If the wood gets scratched during sanding or if you sand a single spot vigorously surface will become uneven and distorted.

This mostly happens when wood finishing, repaired or when fixing wood scratches.

Plus, sanding across the wood surface can damage the wood and eventually lead to an uneven random color.

Woods need to be sanded parallel to the wood grain to get a super smooth surface.

If you sand the wood surface when it is wet that can cause issues because sanding wet wood can damage the surface and lead to unevenness.

Plus, always use quality fresh sandpapers and tools when sanding to get a super smooth surface with no troubles.

When you’re sanding with a sanding block or sandpaper, applying even pressure is a must to get an evenly sanded surface.

If you randomly apply high pressure on some areas and low pressure on some, the wood will get uneven dumps. Once the wood is stained, there’ll have clear visible discolored patches.

Once you get random color patches after staining or finishing the wood, most people identify it as a wood staining or finishing mistake and try to apply wood stain or finish from the very beginning.

But that’s not the only reason for unevenness. The problem could happen during the sanding step.

Therefore, if you notice uneven wood color after staining, better to remove the stain and sand the surface again properly before applying another coat of stain or finish.

As a summary, here’re the possible reasons that cause uneven wood color after sanding,

  • Over-sanding the wood
  • Sanding single spot vigorously
  • Sanding with uneven pressure
  • Sanding across the wood grain
  • Sanding with low-quality sandpapers
  • Sanding when the surface is wet

So, let’s find out How to fix getting uneven wood color after sanding.

How To Fix Uneven Wood Color After Sanding?

If you already got uneven wood color after sanding, there’re some possible methods to fix that to regain the original color.

Supplies You Will Need

  • A pencil
  • 180 grit sandpaper
  • Color wood stain

Here’re the simple steps you need to follow to fix uneven wood color after sanding,

  1. Highlight the uneven areas
  2. Sand the area
  3. Level the wood
  4. Test the wood color

So, let’s describe all the above steps in detail to get a clear idea about fixing the issue.

1. Highlight the Uneven Areas

First of all, you need to highlight the areas that have uneven colors after sanding. You can do this using a pencil.

Pencil marks help to see the color difference between the darker and lighter areas clearly and give you a good picture of which areas you need to focus more on repairing.

In order to highlight the uneven areas, follow the procedure below,

Draw pencil marks all over the surface without missing any spots. Then, do the sanding on the entire wood surface.

When you’re sanding the wooden surface, the pencil marks will eventually fade away. But pencil marks in uneven areas will remain without disappearing.

After sanding the entire wood properly, you’ll notice some areas still with pencil marks. Those are the areas that are uneven and cause uneven wood color after sanding.

Those are the areas that need to fix and get to the same level as other even color areas.

This is the best and easiest method to identify uneven areas that have a different color than even areas after sanding.

This method is popular among woodworkers for many years.

2. Sand The Area

Now it’s time to repair and fix those uneven areas. Take 180 grit sandpaper and sand the areas that remain pencil marks with short and light strokes without going too hard or vigorous.

Once you see pencil marks begin to disappear, stop the sanding.

Sanding should be done parallel to the wood grain to sand without damaging or scratching the wood surface.

If the wood gets damaged during this step, the total process will be messed up and you’ll have to start from the very beginning by drawing up pencil marks all over the surface.

Plus, it cannot be repaired easily. Therefore, never do sanding across the wood grain.

Plus, make sure to apply moderate even pressure on sandpaper throughout the entire process because uneven pressure on sandpaper never gives an uneven surface and it will give more uneven wood colors after sanding.

Do not force sand press hard sanding block or sandpaper to eliminate pencil marks, deviations, and dips.

They will disappear eventually with light short strokes. Therefore, do the sanding with equal pressure.

The sanding block should always be in a flat stable position during the entire process.

The target is to flatten the surface to remove surface unevenness.

3. Level The Wood

Sawdust, pencil dust, and other wood residues will occur during the sanding process.

So, you’ll have to clean the surface during sanding with a lint-free tack cloth or rag to clearly see how pencil marks fade away with sanding.

Use a sawdust cleaning pipe or soft cloth to remove all the dust and debris. You should repeat the sanding process over and over again until pencil marks are gone in uneven areas.

Flat surfaces have no pencil marks and never touch those areas with sandpaper.

Pencil mark highlighted areas give you a better picture of uneven areas and how deep the areas are with color variations.

Those are the areas that you over-sanded.

Do the sanding until all the pencil marks are gone in highlighted areas.

As soon as the pencil marks disappeared, stop the sanding. Repeat the process until all the areas of the wooden surface are on the same level with no pencil marks on them.

4. Test The Wood Color

After sanding and eliminating all the pencil marks, you can try out a little test with wood stain to see whether there are any uneven color areas on the surface.

Take a paintbrush and apply the wood stain evenly all over the surface without making any mistakes.

Apply wood stain along the direction of the wood grain for better absorption.

After applying the stain evenly, let it dry completely and check for uneven colors. If you did the staining part correctly, there should be not any uneven color patches visible.

This way you can check whether you have fixed the uneven wood color after sanding the issue correctly.

After the test, you can remove the wood stains using mineral spirits. Wood stains dissolve well in a mineral spirit and remove with a tack cloth.

Now you know you to fix getting uneven wood color after sanding perfectly using a simple method.

Tips For Sanding Wood Correctly

  • Sand along the direction of the wood grain to avoid wood scratches and to get uneven wood colors after sanding.
  • Start sanding with less grit sandpaper and increase the grit value eventually to get a nice and smooth surface with fewer issues.
  • Do light sanding for softwoods to avoid the wood getting damaged.
  • Sand with light, even pressure on sandpaper to avoid getting uneven surfaces.
  • When fixing uneven wood color after sanding in wood veneer, stop sanding when the grain pattern starts to disappear.
  • Remove sawdust during sanding with a soft cloth or rag.
  • Wear a good mask and gloves during the sanding process to avoid getting eye and skin allergy issues.
  • Always keep the sanding block flat during sanding.
  • Use quality sandpaper and other materials.
  • Never sand wet surfaces. Let the wood dry completely before sanding.

How Do You Know If You Over-Sanded?

You will see the wooden surface is uneven and distorted appearance with no super smooth look if you over-sanded a single spot.

If you over-sanded the wood, uneven color variations will be visible once you stain or finish the surface.

The uneven wood surface doesn’t stain or finish evenly and is unable to get good protection from outdoor elements like moisture, UV light, and insect attacks.

Over-sanded woods can be fixed by re-sanding the entire wood and taking over-sanded areas to the same level as other areas.

That’s it, folks! Now you know how to repair getting uneven wood color after sanding.

So, let’s answer some frequently asked questions regarding sanding.

How Do You Get Rid Of Sander Marks?

You can get rid of sanders marks by starting sanding with lower grit sandpaper like 80 grit sandpaper and then going for the 180 grit and 200 grit sandpaper.

Sanding marks will disappear and do the sanding along the direction of the wood grain to sand without getting sander marks.

Generally, sander marks occur because of using improper sanding techniques, over-sanding wood, using low-quality sandpapers, sanding wet wood, clogging up sandpaper because of dust and debris, and when the sander is not working well.

How To Fix Sanding Mistakes After Staining?

You cannot fix sanding mistakes after staining without removing the stain coating.

To fix sanding mistakes, remove the stain coat using a dissolver-like mineral spirit and let the wood dry completely, and start with light sanding.

Sand along the direction of the wood grain and always use quality sandpaper with correct techniques to avoid sanding mistakes.

Do not over-sand the surface and keep the surface clean with no dust and debris.

Plus, apply light pressure on the sanding block to do the sanding evenly without getting any uneven color patches after sanding.

Once you did the sanding process perfectly, do the staining again to get the desired look you were looking for.

When To Stop Sanding Wood?

Draw a pencil line on the wood surface before sanding and sanding the entire wooden surface you notice the disappearance of the pencil marks.

As soon as you notice the pencil mark is gone, move to a higher grit. Draw the pencil mark and do the sanding.

Stop the sanding when there is no pencil mark remaining on the surface.

This way, you can prevent over-sanding wood and able to overcome many of the wood sanding mistakes to get a super smooth finish.

Did I cover all you wanted to know about: How to Fix Uneven Wood Color After Sanding?

In this article, we have deeply discussed how uneven wood color after staining occurs and how to fix them using a very simple pencil drawing technique. This is the most common technique among woodworkers that use for more than several decades.

Uneven wood color after sanding can be fixed by sanding the surface with light short grit until the wood is on the level. Sand along the direction of the grain with quality sandpapers and use even pressure on the sanding block to prevent over-sanding and to get an even wood color after sanding.

Furthermore, I’ve answered some frequently asked questions as well.

Hope you have gained good knowledge about sanding wood perfectly without getting uneven wood color after sanding.

Try to sand any wood as your next woodworking project and try to overcome uneven surface mistakes to be a pro at wood sanding!

Walter Parker is a woodworking enthusiast. He is passionate about woodworking projects & plays with woodworking tools having spent over 2 decades as a leader for Woodworking Planet. He wants to make people love woodworking! Read More About Him!

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