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Archive for the ‘Wood Finishing’ Category

How to Finish Mahogany: 3 Great Tips for Finishing Your Woodworking Projects

Monday, June 23rd, 2014

You have dozens, maybe hundreds, of ways to finish mahogany for your woodworking projects. That’s one of the best aspects of the wood; you can do just about anything to it and it’ll look wonderful. So there’s no way to make a definitive declaration about the best finish for mahogany. But I can pass you a few tips, ideas, and tried-and-true techniques that have served woodworkers for many years.

Absorb these three techniques, you might find them useful for your woodworking projects. The video above demonstrates how to fill grain, stain and dye to achieve the following looks and colors in mahogany.

1. How to Make a Deep Red Antique Mahogany Finish Using Dye, Stain, and Filler

deep red mahogany finish on genuine mahogany dye stain

Want a visual? This video demonstrates every step, click to watch:

Of the three process we’ll show you here, this one is the most sophisticated, but it also has the most interesting result of the three. While there are a few steps, it’s a straightforward process that’s not hard to pull off. Even though I’m going to list the exact brands and products I used to create this finish, they’re less important than understanding the process. Other brands will work just fine, too. In short: dye the wood to make it the overall color you want, seal it, fill the grain with something dark (aside from the filler I used, there are several other options too), apply a protective finish on top and polish it.

Products Used:

  1. Solar Lux aniline dye, medium brown walnut color (it dries with a maroon red color)
  2. Old Masters Woodgrain filler
  3. Zar oil stain, Early American color
  4. Denatured alcohol
  5. Zinsser SealCoat
  6. Spray lacquer

Instructions:

  1. Prepare the wood surface as you normally would by sanding to 180 or 220 grit
  2. Prepare the dye by diluting it by 50% with denatured alcohol in a mixing container. Apply the dye, either with a pad or by spraying
  3. Let it dry, then apply another coat of dye. Repeat until you’re happy with the color
  4. Apply a coat of Zinsser Sealcoat after the dye is dry. Work quickly and do not let it drip or pool.
  5. After it has dried, you may lightly and carefully sand the sealer if it developed nibs or bumps. Be cautious not to sand through the dye.
  6. Mix Old Masters Woodgrain Filler with a dark brown oil stain. In this example that’s Zar Early American. Use a 2:1 ratio, 2 parts filler to one part stain.
  7. Apply this tinted Woodgrain Filler with a rag, brush, or scraper to work it into the pores of the wood. Follow directions on the can. Let it dry for about 5 minutes, the wipe it off moving across the grain.
  8. Allow the filler to dry about 4 hours. Do another application if the grain is not filled to your satisfaction.
  9. Apply the topcoat of choice. The sample above is finished off with another 3 coats of Zinsser SealCoat, sanded between each one with 220 grit. And then it’s sprayed with 3 coats of lacquer, also sanded between each coat.
  10. Buff and polish when the top coat is ready.

2. Staining Mahogany The Easy Way

staining mahogany is easy to do

Left to right: Zar oil stain “Merlot” color; Old Masters Penetrating Oil Stain ‘Dark Mahogany” color; Old Masters Gel Stain “Cherry” color.

Coloring mahogany doesn’t need to be as involved as that first process. You’re allowed to just open a can of wood stain and put it on the wood. The results, of course, are far less dramatic and less nuanced, but they’ll still look nice. There are a lot of kinds of oil stains to choose from, but basic penetrating oil stains seem to bring the nicest results from the bunch. Opinion, of course. But the pigment builds up in the pores, darkening them more than the surface wood which highlights the character in the wood.

Not all oil stains are engineered the same way. Gel stain, for example, is most often suited for creating a wood grain appearance on fiberglass doors. That’s why if you were to get up close to the stained piece of mahogany on the right you’d notice that the color appears to be almost like a translucent layer of color riding on top of the wood rather than getting into it. The gel stain has muddied the grain of that piece of mahogany. Gel stain has its place — on a piece of raw mahogany is, arguably, not it.

Genuine mahogany also accepts water based stains just fine. As usual, raise the grain and sand it back before applying the water based stain. If you do want to use a water based stain, I suggest filling the grain with a darker water based filler first. Perhaps Timbermate’s walnut colored filler.

After staining mahogany (and after it dries!), protect it with your preferred top coat like varnish, shellac, lacquer or polyurethane.

Take a closer look at stained mahogany examples:

3. Fill the grain to get a perfectly smooth finish

Harder to see in pictures, but the piece on the left has the grain filled with a mahogany colored filler, the piece on the right does not. Both have a lacquer topcoat.

Harder to see in pictures, but the piece on the left has the grain filled with a mahogany colored filler, the piece on the right does not. Both have a lacquer topcoat.

Your mahogany woodworking project will benefit greatly if you fill the grain first, and you’ll notice the difference between a finish with the grain filled and one without the grain filled. So how do you do it? There is more than one way to skin this cat, so here are two.

1. Woodgrain Filler or another paste filler

We already brought up Old Masters Woodgrain Filler in the first process above. So that’s one product you can use, and it’s easy to work with. The trick with it is that you’re supposed to tint it with an oil based stain because out of the can it’s an off white or cream color. So you tint it, apply it, wipe it off, and once it dries sand it smooth. The sanding could be optional if you wipe it down well enough and you approve of the color that it leaves. Naturally, the stain you tinted the filler with will color your wood — the sanding will clear it up though. If you still want to stain your mahogany a darker color, you can do so. So you get the benefit of darkened pores, filled pores, and the choice of keeping your mahogany its natural color or staining it.

Another way to keep the stain in the filler from darkening your mahogany is to put down a washcoat (a coat of sealer) before the filler.

2. Timbermate, or another water based wood filler

The benefits of a water based wood filler is that it dries much faster and clean up is much simpler than the oil based filler above. You also don’t have to tint it, as it frequently is available in numerous colors. The brand Timbermate offers a mahogany color filler, which is what I’ve used in the sample in the picture above. A darker filler might prove to be a little more interesting, darkening the pores more, but the point is that the filler helps you achieve a glassy smooth finish quickly.

 

 

In this post, we share several tips for finishing mahogany in a way that gets you to the color you want and with a glass-smooth protective top coat.

In this post, we share several tips for finishing mahogany in a way that gets you to the color you want and with a glass-smooth protective top coat.

6 Wood Finishes for African Padauk: Which One Is Best?

Tuesday, June 17th, 2014

The vivid orange color of African padauk wood is, yes, 100% natural. And therefore it has a mind of its own. As a project made with African padauk ages, the orange color of the wood usually turns dark – sort of a maroonish brown – and depending on your taste you’ll either find that objectionable or not. Because this change is largely spurred by ultraviolet light, different wood finishes will preserve padauk’s color to different degrees.

So which wood finish works the best? Which one preserves the color the best? Hard to say – but we’ll hand over the evidence and let you be the judge. We tested 6 different wood finishes on African padauk and set the board outside in direct sun light for 21 days. It’s not a long time, but in direct sun light, the change happens quickly. Here’s what happened:

african padauk board with finishes

The Test

Here's how we conducted the finishing test. The board is divided into sections with a shallow groove, then half of each section is finished. The we placed a 2" wide masking strip across the grain to protect a small control area from light, allowing to compare apples to apples. How does the wood change with exposure to light? Do different finishes protect the color better?

Here’s how we conducted the finishing test. The board is divided into sections with a shallow groove, then half of each section is finished. The we placed a 2″ wide masking strip across the grain to protect a small control area from light, allowing us to compare apples to apples. How does the wood change with exposure to light? Do different finishes protect the color better?

To make a good comparison I needed four parts for each of the six finishes, which you can clearly see in the picture on the right, above: a raw section, a finished section, and then a smaller section of both the raw and finished that would be protected from the light for control samples.

 

See the photo at right.

For these control sections I simply placed a 2″ wide strip of masking tape across each of the six sections. In the end, this allows us to compare each of the six exposed finishes to see how it changes and see how each one may protect the color.

Here’s the process:

  1. Divided the board into six sections by cutting five equally-spaced grooves across the grain
  2. Sanded the entire board to 220 grit to prepare it for finishing
  3. Taped off about half of the width of the entire board (the right side of the board as seen above)
  4. Applied 2 coats of each finish, allowed them to dry
  5. Placed a 2″ wide masking tape strip across each section to create the controls
  6. Placed board outside in bright, direct sunlight

Conclusion

  1. Clear dewaxed shellac preserved the orange color the most in a comparison among these six samples. Basically, the section that’s finished with shellac and exposed to light is brightest of these six.
  2. Tung oil, interestingly, makes the wood pretty dark immediately upon application but it also showed the least amount of change during the 21-day light exposure test.

Is this definitive? No. This is just one test of six finishes – there’s certainly more to be done! But the one lesson to learn here is your project will retain the orange color much longer if you can keep it out of direct light.

See For Yourself

Here’s a better look at how each finish behaved in this test. Click the photos to zoom in.

How to Get a Beautiful Wood Finish on Your Tropical Walnut Woodworking Projects

Saturday, May 24th, 2014

Tropical walnut might be a new wood to you, and that’s okay. This is a type of walnut that grows in Ecuador, Peru and Colombia, and happens to be a close relative of American black walnut. The two woods have similar color, hardness, and general working characteristics – they’re both rather nice hardwoods to machine with power tools and shape with hand tools.

They have their differences, too. More about Tropical Walnut >>>

Tropical walnut has much more straight grain and less curly/swirly and irregular character. And it also rarely includes any pale sapwood in the lumber, which is unlike American black walnut. It’s increasingly more common for American black walnut lumber to have a fair percentage of light sapwood. That’s not to say one is better than the other; it just depends on your tastes, so we’re here to empower you with some on-the-ground facts about the material. If you like the dark color found in walnut and prefer a consistent straight grain and no pale sapwood, Tropical Walnut might be a good wood for you to try.

The video above will show you a couple of machining operations to give you an idea of how nicely this wood works, but it also demonstrates in detail the specifics of applying two kinds of grain filler and top coat. But here’s a summary of the finishing techniques.

Basic Wood Finishes Are Fine, But . . .

Using the basic, simple wood finishes on Tropical Walnut is a piece of cake. You can apply your favorite polyurethane, lacquer, shellac, or water-based top coat and there’s a good chance you’ll be happy. The wood darkens nicely and you’ll see a bit of the natural contrast pop out a bit. But you can improve both of these by filling the wood grain first.

Of course, you’re the builder and it’s your project. You get to choose what you like best, and the glass-smooth finish you get with a well-filled grain isn’t always the look you want. But it’s a good idea to fill grain for projects like table tops and desk tops, or in any finish in which you’re going for a glossy sheen. Grain filler also adds a little bit of dark color to the wood pores, and that results in slightly greater contrast and visual depth in the wood.

So what is wood grain filler, where do you buy it, and how do you apply it? Well, filler can be as simple as the wood dust itself, and the video above shows you how do to that. There are also several kinds of solvent and water based fillers you can buy from a store. In all of these cases they’re pretty easy to apply but they do add more time to your finishing process. Good things come to those who put in the time. Take a look.

Click the images to zoom in.

tropical walnut finishes

Simple wood finishes look great on Tropical Walnut – frankly they all provide just about the same look, there’s no single best choice. Left to right: wipe-on gel polyurethane, satin lacquer, waterbased acrylic. The horizontal board on top is unfinished so you can see the comparison.

With a little side light, you can see how these basic finishes don't fill the grain. The dark spots you see are wood pores. Sometimes this kind of finish is just fine. Sometimes it's not.

Yes, there’s glare but that’s on purpose. With a little side light, you can see how these basic finishes don’t fill the grain. The dark spots you see are wood pores. Sometimes this kind of finish is just fine. Other times it’s not and filling the grain helps you achieve a very smooth finish.

Now compare. Both boards have 3 coats of satin lacquer. The difference should be obvious. The board on the left has not had the grain filled, whereas the grain in the board on the right was filled before the lacquer was applied.

Now compare. Both boards have 3 coats of satin lacquer. The difference should be obvious. The board on the left has not had the grain filled, whereas the grain in the board on the right was filled before the lacquer was applied.

This is Tropical Walnut with a nicely filled wood grain and a top finish of 3 coats of spray lacquer. But any film-forming finish can go on top. Shellac, wax, polyurethane, varnish, etc

This is Tropical Walnut with a nicely filled wood grain and a top finish of 3 coats of spray lacquer. But any film-forming finish can go on top. Shellac, wax, polyurethane, varnish, etc