Marcus Chen
Stripping the finish of a guitar with paint stripper is a great way to give a second-hand guitar a new lease of life. This method involves applying a chemical stripper to the body of the guitar, allowing it to sit for a while, and then using a plastic scraper to remove the paint. It is important to work in sections and in the direction of the wood grain to avoid damaging the guitar body. After using a paint stripper, you can sand the guitar body with 240 and 400-grain sandpaper to eliminate any remaining varnish and smooth the surface. Before starting the stripping process, it is crucial to identify the type of varnish on the guitar, as different finishes require specific removal processes. Additionally, always wear gloves and other personal protective equipment (PPE) when working with chemical strippers.
| Characteristics | Values |
|---|---|
| Tools required | Paint stripper, gloves, newspapers, disposable brush, Saran wrap, plastic scraper, sandpaper |
| Steps | 1. Lay the guitar on a stack of newspapers. 2. Paint the stripper on one side of the guitar, following the grain of the wood. 3. Cover the treated area with Saran wrap and let it sit for 15-20 minutes. 4. Use a plastic scraper to lift the paint off the body, working in the direction of the wood grain. 5. Sand the guitar body to eliminate varnish residue and level the wood. |
| Considerations | Wear PPE when stripping the finish. Be cautious when using a heat gun to remove paint, as it can burn the finish. Modern poly finishes may not respond to traditional strippers and may require sanding or the use of a heat gun. |
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What You'll Learn
Wear gloves and lay the guitar on newspaper
When using a chemical stripper to refinish a guitar, it is important to wear gloves to protect your hands and avoid getting the stripper on your skin. Laying the guitar on a stack of newspapers is also crucial to catch any drips or spills during the stripping process. Make sure you have a good amount of newspaper stacked underneath the guitar body, as you will be changing it out frequently. The newspaper will help absorb any excess stripper and prevent it from spreading beyond the work area.
Before you begin, ensure you have all the necessary tools and safety equipment. In addition to gloves, safety goggles and a respirator are crucial to protect your eyes and lungs from the chemicals in the stripper. It is also recommended to work in a well-ventilated area or outdoors if possible. Lay out your tools and safety equipment within easy reach, and have a plan for disposing of the used newspaper and chemical waste responsibly.
When you are ready to begin, pour the chemical stripper into a glass bowl or container. Using a disposable brush, start applying the stripper to one side of the guitar body, working in the direction of the wood grain. Be careful not to use too much stripper, as it can drip off and go to waste. Some stripper may run over the sides, which is normal and will help loosen the paint for the next steps.
After applying the stripper, cover that side of the guitar with Saran wrap and let it sit for at least 15-20 minutes, or as recommended by the product instructions. This allows the stripper to work effectively on the paint. Be mindful not to let it sit for too long, as it can dry up and become difficult to remove. Once the required time has passed, use a plastic scraper to gently lift and remove the paint from the body of the guitar.
It is important to note that chemical strippers can be harsh and damaging to the wood if not used carefully. Always work in the direction of the wood grain and avoid using metal scrapers, as they can gouge the wood. With these precautions and a careful, methodical approach, you can effectively strip the finish from your guitar and prepare it for a new coat of paint or varnish.
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Paint the stripper on one side, following the grain of the wood
Stripping the finish on a guitar with paint stripper is a viable method, but it is a laborious job that requires a certain order of steps to do it correctly. It is important to wear gloves and lay the guitar body down on a stack of newspapers, changing the paper with each new step in the process.
Now, paint the stripper onto one side of the guitar body, following the grain of the wood. Since the grain of the wood in guitar bodies runs from top to bottom and not across, spread the stripper in this direction only. Some of the stripper will run over the sides, which is fine as it will help to loosen the paint for when you get to that section.
Do not push lots of stripper over the sides, as it will just fall off and be wasted. Cover the side you have applied the stripper to with plastic wrap and let the body sit for at least 15-20 minutes, or as recommended by the product instructions. Do not leave it for too long, as it can dry up and become crusty, making it more difficult to remove.
After the required time, take a plastic scraper and start to lift the paint off the body. It is useful to have two scrapers so that you can remove the built-up paint from the first scraper with your second one. Be sure to work in the same direction that you spread out the stripper, never against it. Metal scrapers risk gouging the wood, so stick to plastic.
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Cover the guitar with Saran wrap and leave for 15-20 minutes
Once you've applied the chemical stripper to the guitar, it's time to cover it with Saran wrap. This is an important step, as it helps to contain the stripper and prevent it from drying out too quickly. Make sure you cover the entire face of the guitar that has been treated with the chemical stripper. You don't want it to dry out and become crusty, as it will be more difficult to remove.
After you've applied the Saran wrap, leave the guitar alone for at least 15-20 minutes. This waiting period is crucial, as it gives the chemical stripper time to work its magic and loosen the paint. You can use this time to relax and do something else—watch TV, listen to music, or grab a snack. Just make sure you don't leave the stripper on for too long, as it can dry up and become more difficult to remove.
During this time, the chemical stripper will start to break down the finish. It will penetrate the layers of paint or varnish, making it easier to scrape off later. The exact time needed will depend on the specific product you're using, so always refer to the manufacturer's instructions. Some strippers may require a shorter or longer duration.
While you wait, it's a good idea to prepare your workspace for the next steps. Gather the necessary tools, such as plastic scrapers and fresh newspapers. You'll want to have everything within arm's reach so that you can quickly move on to the next step once the time is up. Remember to wear gloves and other appropriate protective gear throughout the process.
After the waiting period, you can return to your guitar. You should now be able to use a plastic scraper to gently lift and remove the paint from the body of the guitar. Work in the same direction that you applied the stripper, following the grain of the wood. With a little patience and elbow grease, you'll soon have a guitar free of its old finish and ready for a new one!
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Scrape off the paint with a plastic scraper
Once you've applied the chemical stripper and let it sit for the recommended amount of time, it's time to start scraping off the paint with a plastic scraper. It's important to use a plastic scraper, as metal scrapers can risk gouging the wood of your guitar, and many chemical strippers will soften and deteriorate rubber. Having two scrapers on hand is useful so that you can remove the built-up paint from the first scraper using the second one.
When scraping, be sure to work in the same direction that you spread out the stripper, with the grain of the wood. Never work against the grain by going side to side, as this can damage the wood. Take your time and be gentle, as you don't want to accidentally gouge the wood or remove more finish than you intended. Depending on the type of finish, you may need to be more careful in your scraping. For example, if you're working with a modern poly finish, you'll need to be cautious as it can turn into a nasty slurry if traditional strippers are used.
It's also important to note that this process can be tedious and time-consuming, so patience is key. You may need to apply more chemical stripper and let it sit for longer if the paint is particularly stubborn. Additionally, be sure to work in a well-ventilated area when using chemical strippers, and always wear personal protective equipment (PPE) to avoid inhaling any fumes or coming into direct contact with the chemicals.
After you've removed the majority of the paint with the scraper, you may need to switch to a different tool, such as a knife, to get into tight spaces or remove any remaining finish. You can also use a heat gun to soften the finish, making it easier to scrape or peel away. Remember to keep the heat gun moving to prevent burning the finish or the wood underneath.
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Sand the guitar with 240 and 400 grit sandpaper
To strip a guitar finish with paint stripper, you will need to first cut the strings, remove all the screws, and take out the soundboard. This will leave the body of the guitar isolated, ensuring that no part of the guitar is damaged. Next, lay the guitar body on a stack of newspapers and start to paint the chemical stripper over one side, using a disposable brush. Work in sections, always going in the direction of the grain of the wood, never against it.
Once you have applied the stripper, cover the guitar with Saran wrap and let it sit for at least 15-20 minutes. Then, use a plastic scraper to lift the paint off the body. You can now move on to sanding the guitar with 240 and 400 grit sandpaper.
Start with the 240 grit sandpaper to eliminate any remaining varnish and to level the wood, in case it has suffered any scratches during the stripping process. This type of sandpaper is ideal for removing material without taking off too much. Then, use the 400 grit sandpaper to smooth out the surface of the guitar. This grit is less rough and will leave the body of the guitar smooth and ready for varnishing or staining.
After sanding, the guitar will be ready for the finish of your choice. It is important to ensure that the surface is perfectly clean and dust-free before applying any new finish. You can use denatured alcohol to remove dust, as it evaporates quickly and leaves a clean surface. Several light coats of finish are better than one thick coat, so you may need to thin out the first few coats before moving on to regular thickness.
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Frequently asked questions
Wear gloves and work in a well-ventilated area to protect yourself from the chemicals in the paint stripper. You should also cover the surrounding area with newspaper to catch any drips or spills.
You will need a paint stripper, gloves, newspaper, a disposable brush, Saran wrap, and a plastic scraper.
First, lay the guitar on a stack of newspaper and start to paint the chemical stripper over one side of the guitar, following the direction of the wood grain. Cover the area with Saran wrap and let it sit for at least 15-20 minutes. Then, use a plastic scraper to lift the paint off the guitar, working in the same direction as the wood grain.
Paint strippers are typically used for removing polyurethane or polyester finishes, which are common on guitars from industrial factories.
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