Finishing is the part of a guitar build that separates "I assembled a kit" from "I built a custom instrument." After helping thousands of builders through their first finish, I can tell you the number one mistake is rushing. The number one success factor is patience. This guide covers every finish type we have seen our builders use, with honest difficulty ratings based on real results — not marketing claims.
The finish is where a DIY guitar kit becomes a one-of-a-kind instrument. From simple oil rubs that take an afternoon to elaborate epoxy art that takes a month, the range of finishes you can apply at home is wider than most builders realize. This guide covers every major finish category with realistic difficulty ratings, material costs, and tips from the Guitar Kit World community.
A guitar finish is the protective and decorative coating applied to the bare wood of a guitar body and neck. It serves two purposes: protecting the wood from moisture, sweat, and physical damage, and defining the instrument's visual identity. The finish you choose is the single most visible and personal design decision in any custom guitar build.
Natural and Oil Finishes
Natural finishes are the fastest and most forgiving option for any builder. They enhance the wood's natural grain and color without hiding it.
A color-shift finish in progress from the Guitar Kit World community.
Oil Finish (Tung Oil, Danish Oil, Linseed Oil)
Difficulty: Beginner (easiest finish to apply)
Cost: 15 to 30 USD (one can covers multiple coats)
Time: 2 to 4 hours active work + 24 to 48 hours drying
Look: Satin, natural, feels like bare wood under your hands
Best for: Figured woods (flame maple, quilted maple, zebrawood)
Oil finishes soak into the wood rather than sitting on top of it. The result is a thin, natural-feeling surface that highlights grain patterns. Application is simple: sand the body to 320 grit, wipe on a coat with a lint-free cloth, let it soak in, wipe off the excess, and repeat 3 to 5 times. Mistakes are nearly impossible because you can sand and re-apply at any point.
Time: 3 to 5 hours active work + 48 hours drying between coats
Look: Semi-gloss to gloss, more protection than oil alone
Best for: Builders who want a natural look with more durability
Wipe-on poly gives you the ease of an oil finish with the durability of a film finish. Apply thin coats with a lint-free cloth, sand lightly between coats with 400 grit, and build up 4 to 6 layers. The result is harder and more scratch-resistant than oil alone.
Stain Finishes
Stains add color while preserving the wood grain underneath. They are the middle ground between natural finishes and opaque paint: you get color control without hiding the wood.
Water-Based Stain
Difficulty: Beginner to intermediate
Cost: 10 to 25 USD per can/bottle
Time: 1 to 2 hours per coat + 2 to 4 hours drying
Look: Transparent color, grain visible, even tone
Best for: Single-color transparent finishes on uniform-grain woods
Water-based stains are easy to clean up, low odor, and forgiving. If the color is uneven, sand back and re-apply. Always follow stain with a clear coat (wipe-on poly, spray lacquer, or spray poly) for protection. For veneer-topped kits, see our veneer staining guide.
Time: 4 to 8 hours active work + multiple days for drying
Look: Darker edges fading to lighter center — the classic guitar look
Best for: S-style, T-style, LP-style kits with attractive grain
A sunburst uses layered stain applications: the entire body gets a light base color, then darker stain is sprayed or brushed around the edges and blended toward the center. Our sunburst finish tutorial walks through the process step by step. Burst finishes look stunning on ash-bodied kits where the bold grain pattern shows through the color.
Paint Finishes
Opaque paint finishes give you unlimited color options and the widest creative range. They are also the best choice when the body wood has plain or uninteresting grain.
Spray Can (Rattle Can) Finish
Difficulty: Intermediate (technique matters)
Cost: 30 to 60 USD (primer + color + clear coat cans)
Time: 6 to 12 hours active work + 1 to 2 weeks total (drying/curing)
Look: Solid color, metallic, or candy — near-professional results with practice
Best for: Solid colors on basswood or other plain-grain bodies
The spray can approach is the most popular paint method among kit builders because it requires no special equipment. Sand the body, apply 2 coats of primer, 3 to 4 coats of color, and 3 to 4 coats of clear. Wet sand with 1000 to 2000 grit between final coats for a smooth surface, then polish for gloss. See how to paint a solid body guitar for the full process.
The keys to a good spray finish: light coats (no drips), consistent distance (10 to 12 inches), warm and dry conditions, and patience between coats. Most beginner mistakes come from spraying too thick or not waiting long enough between coats.
Time: 6 to 12 hours active work + 1 to 2 weeks curing
Look: Factory-quality even coats, fine atomization
Best for: Builders who want professional-grade results or plan multiple builds
An HVLP (High Volume Low Pressure) spray gun produces finer atomization and more even coats than a rattle can. The investment in equipment makes sense if you plan to build multiple guitars or want the smoothest possible finish on a special build.
Specialty and Creative Finishes
This is where kit builds go from instruments to art pieces. These finishes are limited only by your imagination.
Time: 4 to 8 hours active work + 24 to 72 hours curing
Look: Deep, glossy, three-dimensional color effects
Best for: One-of-a-kind art pieces, galaxy and ocean themes, abstract art
Epoxy finishes produce stunning, deep, three-dimensional color effects that no other finish type can achieve. Pigments, glitters, and metallic powders are mixed into clear resin and poured or brushed onto the body. The resin self-levels for a smooth surface and cures hard and glossy. See Jason's epoxy build for a real-world example of what is possible.
Time: 3 to 6 hours active work + drying time for clear coat
Look: Collage, textile, printed graphics — anything you can laminate
Best for: Non-traditional aesthetics, comic art, map designs, photo collages
Decoupage involves adhering paper, fabric, or printed material to the body surface, then sealing it under multiple coats of clear finish. This technique allows literally any image or pattern to become a guitar finish: comic book pages, sheet music, maps, fabric patterns, custom printed graphics, or photos.
Hand-Painted Art
Difficulty: Advanced (requires painting skill)
Cost: 20 to 80 USD (acrylic or enamel paint + brushes + clear coat)
Best for: Artists who want a truly one-of-a-kind showpiece
A guitar body is a canvas. Acrylic paint on a primed body, sealed under clear coat, produces a durable art piece that also happens to be a playable instrument. This finish is where artists and musicians overlap — and where GKW community builds get the most attention on social media.
Finishing Tips From the GKW Community
These tips come from builders who have been through the process and learned what matters most:
Sand thoroughly before any finish. Start at 120 grit and work up to at least 320. The finish only looks as good as the surface underneath it.
Seal the grain on open-pored woods (mahogany, ash) with a grain filler before applying clear coats. Without this step, the finish sinks into the pores and looks uneven.
Test your finish on scrap wood first. Every GKW kit ships with enough material that you can use an offcut or the cavity covers to test stain colors and spray technique.
Temperature and humidity matter. Spray finishes work best between 65 and 80 degrees Fahrenheit with low humidity. Cold or humid conditions cause blushing (white haze in the clear coat).
Patience is the real skill. The most common finish mistakes are rushing between coats. When in doubt, wait longer.
Not every finish suits every wood. Here is a practical pairing guide:
Basswood: Plain grain — best with paint, stain, or creative finishes. Oil finishes look flat on basswood because there is not much grain to highlight.
Mahogany: Open pore, warm color — beautiful with oil, stain, or transparent finishes. Fill the grain first for a smooth glossy finish.
Ash: Bold, dramatic grain — ideal for transparent stains and burst finishes. The grain pattern provides the visual interest.
Alder: Moderate grain — versatile, works with any finish type.
Flame / quilted maple veneer: The star of transparent finishes. Stain brings out the figure dramatically. Oil and wipe-on poly showcase the 3D effect of figured maple.
Zebrawood: Striking striped pattern — best with clear or tinted oil to let the natural contrast show.
Frequently Asked Questions
What is the easiest guitar finish for a beginner?
An oil finish (tung oil or Danish oil) is the easiest finish to apply successfully. It requires no special tools, no spray technique, and mistakes are easy to fix by sanding and re-applying. You can complete an oil finish in an afternoon.
How much does it cost to finish a guitar kit?
Finishing supplies cost 15 to 150 USD depending on the method. Oil finishes are the cheapest (15 to 30 USD). Spray can finishes run 30 to 60 USD for primer, color, and clear coat. Specialty finishes like epoxy art cost 40 to 100 USD for materials.
Can I change a guitar's finish later?
Yes. You can sand off an existing finish and start over. It adds several hours of work but is entirely doable. This is one advantage of a DIY build — you can refinish the guitar whenever you want a new look.
What finish gives the most protection?
Polyurethane (spray or wipe-on) provides the hardest and most durable protective coating. It resists scratches, moisture, and chemicals better than oil, lacquer, or nitrocellulose finishes. For a working instrument that gets gigged regularly, poly is the most practical choice.
Does the finish affect tone?
Thick film finishes (heavy poly, thick lacquer) can slightly dampen acoustic resonance. Thin finishes (oil, thin nitro) allow more wood vibration. On an electric guitar where pickups dominate the amplified sound, the tonal difference between finish types is subtle. Choose your finish for looks and durability, not tone.
Nathan T.
8 min read
Nathan T.
8 min read
