Designing Your Acoustic Guitar: A Step-By-Step Guide

how to paint a design on an acoustic guitar

Painting a design on an acoustic guitar is a great way to revitalise its look. Before painting, you should remove the guitar strings and consider taking off the neck and electronics. Then, you should sand the guitar to remove the clear surface and any old paint. After sanding, use a mineral oil paint thinner to remove dust and oils. Next, apply a spray primer and use painter's tape to cover areas you don't want to be painted. Finally, you can paint your design using acrylic paints.

cypaint

Prepare the guitar for painting

To prepare an acoustic guitar for painting, you should start by removing the strings and any other parts that you want to protect from primer and paint, such as the pick guard. You should also consider whether you want to refinish the back of the neck. If your guitar has a bolt-on neck, this can be easily removed by unscrewing it. If your guitar has electronics, you may need to remove or cover them. It is a good idea to take photographs at this stage, so you have a reference for reassembly.

Next, you will need to strip away the old paint and surface of the guitar. An orbital sander is the best tool for this, but if you don't have one, you can use a backing block or wrap coarse-grit sandpaper around a sponge. Sanding sponges are best for curves and crannies. If you plan to strip the cavities, use small strips of sandpaper and sanding sponges. If you are going to repaint the sound hole rosette, sand this area too.

Once the old paint has been removed, use a mineral oil paint thinner to remove any dust and oils from the bare wood. Apply a thin layer with a microfiber cloth to one side of the guitar and leave it to dry before repeating on the other side.

Now your guitar is ready for priming. Use painter's tape and paper to cover any areas you don't want to be covered in primer. Then, apply a spray primer to the guitar in light passes.

cypaint

Sand the guitar

Sanding a guitar is an important step in achieving a smooth and blemish-free finish. It is a process that requires patience and attention to detail to ensure the best results. Here is a step-by-step guide to sanding your guitar before painting:

First, it is crucial to prepare your work area. Clear the space and protect your guitar by placing it on cardboard or, ideally, carpet. This helps prevent any scratches or damage to the guitar during the sanding process. Ensure that any grit, screws, or metal shards are removed from the area to avoid accidental scratching.

Next, choose the right sandpaper for the job. It is recommended to use at least three grades of sandpaper: rough, medium, and fine. For the initial sanding, start with 120-grit sandpaper. This heavier grit is perfect for removing any scratches, bumps, or dents on the guitar's surface. While it may not provide a detailed finish, it sets the foundation for the subsequent sanding steps.

After addressing the prominent imperfections, switch to 220-grit sandpaper. This finer grit will help remove the minor scratch marks left by the previous sanding step. Remember, with each finer grain sandpaper, you are essentially removing the scratches from the previous grit.

Once you have finished sanding with 220-grit paper, move on to 320-grit sandpaper. This grit will help smooth out the guitar's body even further. After sanding with 320-grit paper, dampen the timber slightly with a rag. This step will help lift any loose grains, allowing you to sand the surface flat.

When sanding, always work with the grain of the wood. Sand in the direction of the grain, back and forth, but never sideways. On curved edges, sand in only one direction. Additionally, always use a hard sanding block on the flat surfaces of the guitar. A flexible sanding block can be used for guitars with plenty of contours.

By following these steps, you will effectively sand your guitar, creating an ideal surface for painting and achieving a smooth and professional finish.

cypaint

Prime the guitar

To prime an acoustic guitar for a new paint job, you must first prepare the guitar's surface. Start by removing the strings and any other parts you don't want to take the time to cover, such as the pick guard. If you want to refinish the back of the bolt-on neck, you can remove it by unscrewing it. Remember to take photos of the guitar before disassembly for reference during reassembly. Cover any remaining parts with painter's tape and paper.

Next, sand the guitar to remove the clear surface and any old paint. You can use an orbital sander, a backing block, or sandpaper for this step. If you're using sandpaper, wrap it around a sponge to effectively sand the curves and crannies. Be careful when sanding an acoustic guitar, as they have hollow bodies with thin pieces of wood. If you plan to repaint the sound hole rosette, be sure to sand that area as well. Stripping the cavities will create a more professional finish and allow you to apply shielding paint.

Once the guitar is sanded, use a mineral oil paint thinner to remove dust and oils from the bare wood. Apply a thin layer of the oil to one side of the guitar with a microfiber cloth, let it dry, then apply it to the other side.

Now you're ready to apply the primer. Use a spray primer and cover the guitar with light passes. Once the primer is dry, you can start painting your design.

cypaint

Paint the design

Painting a design on an acoustic guitar is a great way to give your instrument a unique, personalised look. Here is a step-by-step guide to help you through the process:

First, you need to prepare the guitar for painting. Remove the strings and any other parts you want to protect, such as the neck and pick guard. If you're refinishing the neck, now is a good time to do so. Take photos throughout this process to make reassembly easier. Next, you'll want to sand the guitar to remove the old finish and create a surface that will hold the new paint better. Use an orbital sander if you have one, or a backing block or sanding sponge if you don't. Be careful when sanding the thin wood of an acoustic guitar, and pay extra attention to any curves and crannies. If you're planning to repaint the sound hole rosette, don't forget to sand this area too.

Once you've finished sanding, use a mineral oil paint thinner to remove any dust and oils from the wood. Apply a thin layer with a microfiber cloth to one side of the guitar, let it dry, then do the same on the other side. Now you're ready to start painting! Use painter's tape to mask off any areas you don't want to get paint on. If you're using a spray primer, cover the rest of yourself and your workspace, as well as any exposed parts of the guitar, before starting. Apply the primer in light passes to avoid drips and runs.

Now it's time to add your design. You can sketch it out with a pencil first or dive right in with paint. If you're using acrylic paints, as many guitar painters do, you can combine them with water to create a wash effect. Be as creative as you like! Once you're happy with your design, finish it off with a clear colour coat to protect your artwork. There are two main types of clear coat to choose from: polyurethane and nitrocellulose. Polyurethane is stronger but may affect the acoustics due to its thickness, while nitrocellulose is thinner and easier to apply but more susceptible to damage. Whichever you choose, be sure to work in a well-ventilated area and wear a respirator mask. Apply the clear coat using even strokes to ensure a smooth finish.

cypaint

Apply a clear colour coat

Once you have your design ready, it's time to apply a clear colour coat to your acoustic guitar. This step is important as it will protect your artwork and ensure the guitar's longevity. There are two types of clear colour coats that you can use: polyurethane and nitrocellulose paint. Each has its advantages and disadvantages.

Polyurethane clear coats are widely available and low-VOC poly finishes are considered safer for both the user and the environment. They provide a strong and solid finish. However, some people believe that the thick coating can affect the acoustics. When applying a polyurethane coat, use the same even stroke method as you would with regular paint.

Nitrocellulose clear coats have gained popularity due to their thinner layers, allowing the guitar to resonate better. Nitro finishes are easy to apply, but they are susceptible to damage. Additionally, nitrocellulose finishes are high-VOC and may be restricted in certain states.

Regardless of the type of coat you choose, always apply it in a well-ventilated area and wear a respirator mask to protect yourself from inhaling any fumes. Before applying the clear coat, use a mineral oil paint thinner to remove any dust or oils from the guitar's surface. Apply a thin layer with a microfiber cloth to one side, let it dry, and then repeat the process on the other side.

Frequently asked questions

You will need sandpaper or an orbital sander, paint thinner, a guitar, paint, primer, and a respirator mask.

First, remove the strings and any other parts you don't want to paint over. Then, use sandpaper or an orbital sander to remove the old finish and smooth the surface. Next, use a paint thinner to remove any dust or oils, and finally, apply a primer.

You can use acrylic paint or spray paint.

You can use a spray primer and apply it with light passes.

You can use a brush, roller, or spray to apply the paint. If you're using a spray, be sure to do it in a well-ventilated area and wear a respirator mask.

Written by
Reviewed by

Explore related products

Share this post
Print
Did this article help you?

Leave a comment