How to Fix a Stripped Screw Hole in a Guitar

Why screw holes strip

Guitar bodies are made from a variety of tonewoods, such as mahogany, rosewood, maple, and sapele. These woods are chosen for their acoustic properties, but they are also relatively soft compared to hardwoods used in furniture. Over-tightening a screw, repeated removal and reinsertion, or simply the natural drying of wood can cause the screw to lose its grip. The hole enlarges and the screw no longer holds firmly.

Most stripped screw holes occur in areas that see frequent movement, like strap buttons, pickup rings, or pickguard screws. A loose screw can cause rattles, poor electrical contact, or even damage to the instrument if left unattended. The good news is that repairing a stripped hole is straightforward and requires only basic tools and materials.

Assess the damage first

Before choosing a repair method, examine the hole and the screw. Remove the screw and look at its threads. If the threads are worn or damaged, replace the screw. If the hole is only slightly enlarged, a simple filler may be enough. If the screw is completely loose and the hole is much larger than the screw shaft, you will need a more substantial repair.

Also consider the location and the amount of stress the screw will bear. For example, neck joint screws experience more pull than a pickguard screw. A high-stress joint needs a stronger repair, such as a wooden dowel, while a low-stress location can often be fixed with toothpicks or wood filler.

• Check the screw threads for damage
• Measure the hole diameter compared to the screw shaft
• Assess the stress: high-stress joints (neck heel, strap button) need sturdier fixes
• Determine if the wood around the hole is cracked or compressed

Method 1: Toothpicks and wood glue

This is the most common and least invasive repair. It works well for small holes where the screw still has some grip but you need to add volume. Start by placing a drop of wood glue into the hole. Insert several toothpicks, enough to fill the hole completely. Tap them in gently with a small hammer or the handle of a screwdriver. Let the glue dry for a few hours, then clip the toothpicks flush with the surface using a craft knife or wire cutters.

The toothpicks create new wood that the screw threads can bite into. This is ideal for strap button holes and pickguard screws. For more on strap buttons and locks, see our guide. It is not recommended for critical joints like the neck heel, because the toothpicks are not as strong as a solid dowel. After the glue dries, you can screw back in and the repair will hold for years.

Method 2: Wood filler

Wood filler is a thicker compound that can be packed into a stripped hole. It is best for holes that are too large for toothpicks or where you want a smooth surface for a new screw placement. Choose a wood filler that matches the color of the guitar body, or use a neutral tone that can be painted over. Apply the filler with a small putty knife, overfilling the hole slightly, and allow it to cure according to the manufacturer's instructions.

Once fully dry, sand the area flush with the surrounding wood. Drill a pilot hole for the screw if needed, and then drive the screw. Wood filler is not as strong as toothpicks or a dowel, so it is best for low-stress areas like pickup ring screws or output jack plates. See how to replace a guitar output jack for related repairs. It also works well if you need to move the screw location slightly, as you can fill the old hole and drill a new one nearby.

Method 3: Wooden dowels

For the strongest repair, use a wooden dowel that matches the drill bit size. This is the preferred method for critical joints such as the neck heel, bridge posts, or any place where a screw carries significant load. Drill out the stripped hole to a consistent diameter, slightly larger than the original. Choose a hardwood dowel, like birch or oak, that is the same or slightly larger than the hole. Coat the dowel with wood glue and tap it into the hole until it is flush. Wait for the glue to dry fully, then saw and sand the dowel flush with the surface.

The dowel becomes a new wooden base for the screw. You can then drill a pilot hole and drive the screw as you would into fresh wood. For critical joints such as the neck heel, see how to remove a bolt-on guitar neck for related procedures. This repair is nearly invisible if you match the wood species and finish, and it provides a hold that is often stronger than the original. Because the dowel is solid wood, it resists stripping much better than toothpicks or filler.

You need to be precise with the drill bit size and the dowel diameter. Measure the screw's shaft and drill a hole that is just slightly larger. A tight fit is essential for the glue to bond effectively.

Compare repair methods

The table below summarizes the strengths and best uses for each technique.

Step-by-step repair process

Regardless of the method you choose, the basic workflow is the same. You will need a few basic tools: a clean cloth, wood glue, the chosen filler material (toothpicks, filler, or dowel), a knife or saw, sandpaper, and a screwdriver. Make sure the guitar is stable and the surrounding area is protected from glue drips.

Start by removing the screw and cleaning the hole of any debris. If you are using toothpicks, dip the ends in glue before inserting. For filler, pack it in firmly and smooth the top. For a dowel, drill the hole to a uniform size, apply glue, and insert the dowel with a gentle tapping motion. Allow the repair to cure for at least 24 hours. Then trim and sand the surface, drill a new pilot hole if necessary, and reinstall the screw. Always turn the screw slowly and avoid over-tightening.

If you are working on a guitar with a polyurethane or nitrocellulose finish, take care not to scratch the surrounding area. Use painters tape to mask off the work zone. If the repair is on an exposed surface, you may need to touch up the finish after sanding to keep the instrument looking original.

• Remove the screw and clean the hole
• Prepare the repair material (toothpicks, filler, or dowel)
• Apply glue to the material and insert it into the hole
• Let the repair cure completely
• Trim and sand the surface flush
• Drill a pilot hole if needed
• Reinstall the screw with caution

Prevent future stripped holes

The best way to avoid stripped screw holes is to handle screws with care. Use a screwdriver that fits the screw head perfectly, and apply even pressure while turning. Never over-tighten a screw; once you feel resistance, stop. If you are reinstalling a screw into an existing hole, apply a small amount of wood glue to the threads to help them grab, but do not use glue if you might need to remove the screw later.

For screws that are removed often, like strap buttons, consider using strap locks or threaded inserts. Threaded inserts are metal sleeves that are installed into the wood and accept a machine screw. They provide a much more durable hold and can be replaced if they ever wear out. Installing a threaded insert is a more advanced repair but it virtually eliminates the problem.

Also keep your guitar at a consistent humidity level. Wood expands and contracts with moisture changes, which can loosen screws over time. Using a guitar humidifier in dry climates helps maintain the wood's integrity.

When to call a professional

The methods described here are safe for most screw holes, but certain situations warrant professional help. If the stripped hole is in the neck heel or near a structural joint, a repair that is not perfectly executed could compromise the instrument's playability. If you are unsure about the size of the dowel or the exact placement of a new screw, a qualified guitar tech can do the job with precision.

Additionally, if the wood around the hole is cracked, the finish is damaged, or the guitar is a valuable vintage instrument, it is wise to consult a luthier. They have access to specialty tools and materials and can match the wood and finish perfectly. A poorly done DIY repair can lower the value of a high-end guitar, so weigh the cost of professional service against the risk.

That said, for the majority of stripped screw holes on average guitars, the DIY methods above will restore the instrument to perfect working order. With a little patience and care, you can avoid the hassle and expense of a shop visit.

What to pick for your repair

Questions

Can I fix a stripped screw hole without removing the screw?

No. You need to remove the screw to clean the hole and apply the repair material. Forcing filler or toothpicks around the screw will not provide a secure hold.

How long does the glue need to dry?

Most wood glues need at least 24 hours to cure fully, but check the label on your specific product. For toothpicks, a few hours may suffice, but for dowels, allow a full day to be safe.

Will the repair show on the guitar's finish?

If you match the wood color and sand carefully, the repair can be nearly invisible. For exposed areas, you may need to touch up the finish with a matching lacquer or polish.

Can I use regular white glue instead of wood glue?

Wood glue is specifically designed for wood-to-wood bonds and dries stronger. White craft glue is water-soluble and won't hold as well. Use a wood glue such as Titebond or aliphatic resin glue. For more on wood care, see how to clean and condition a guitar fretboard.

What should I do if the screw hole is in a metal plate or bridge?

If the hole is in a metal component, the repair is different. You may need to re-tap the threads or replace the screw. The methods in this article apply only to wooden screw holes.