5 Finishing Techniques Every Woodturner Should Know

by Jake Bishop

A great finish can make or break a turned piece. The wood might be stunning, the form perfect — but if the finish is dull, uneven, or peeling, the whole project falls flat. The good news is that woodturning finishing is learnable, and a handful of techniques cover the vast majority of what you'll ever need. Here are the five every turner should have in their toolkit.

1. CA (Cyanoacrylate) Finish

CA finish — applied with thin cyanoacrylate glue — has become the dominant finish for pen turners and small spindle work, and for good reason. Done well, it produces a glass-hard, high-gloss surface that rivals lacquer and protects the wood from daily wear.

How to apply:

  1. Sand the piece through the grits to at least 400 (600 for oily species like Cocobolo or African Blackwood).
  2. For oily woods, wipe with denatured alcohol and let dry completely before applying CA.
  3. Apply thin CA sparingly to a folded paper towel or applicator. Work quickly — thin CA sets fast.
  4. Apply 6–10 coats, letting each cure fully (accelerator speeds this up).
  5. Sand back with 400–600 grit wet/dry to level the surface, then buff through polishing compounds to a mirror finish.

Best for: Pens, bottle stoppers, tool handles, stabilized wood, and any project where durability and high gloss are priorities.

2. Friction Polish

Friction polish is the fastest route to a warm, glowing finish on the lathe. It's a shellac-based product that cures almost instantly from the heat generated by the spinning wood — apply it, buff it, and you're done in minutes.

How to apply:

  1. Sand to at least 320 grit with the lathe running.
  2. Apply a small amount of friction polish to a cloth or paper towel.
  3. Hold the cloth against the spinning piece with light pressure. The heat cures the shellac almost instantly.
  4. Apply 3–5 coats, buffing between each with a clean cloth.
  5. Finish with a paste wax or carnauba wax for added sheen and protection.

Best for: Decorative pieces, bowls, and any project where a natural, warm sheen is preferred over high gloss. Not ideal for items that will see heavy daily use.

3. Oil Finish (Tung Oil / Danish Oil)

Oil finishes penetrate the wood rather than sitting on the surface, enhancing the natural color and grain while leaving a low-sheen, tactile finish. They're easy to apply and repair, making them a favorite for functional pieces like bowls and tool handles.

How to apply:

  1. Sand to 220–320 grit.
  2. Apply oil generously with a cloth, working it into the grain.
  3. Let it penetrate for 15–30 minutes, then wipe off the excess thoroughly.
  4. Allow to cure fully (24–48 hours depending on the product and temperature).
  5. Apply 2–3 coats for best results, sanding lightly with 400 grit between coats.

Best for: Bowls, platters, and functional pieces. Not suitable for oily species like Cocobolo or African Blackwood (the natural oils prevent penetration) or for stabilized wood (the resin blocks absorption).

4. Buffing System (Beall or Similar)

A buffing system — typically three wheels running through tripoli, white diamond, and carnauba wax compounds — is one of the most versatile finishing methods in the shop. It can be used as a standalone finish on dense hardwoods or as the final step after CA or friction polish to achieve a mirror shine.

How to apply:

  1. Sand the piece to at least 400 grit (600+ for best results).
  2. Run the piece across the tripoli wheel to remove fine scratches.
  3. Move to the white diamond wheel to refine the surface further.
  4. Finish on the carnauba wax wheel for a high-gloss protective coat.
  5. Use light pressure and keep the piece moving to avoid burning.

Best for: Dense hardwoods like African Blackwood that can be polished to a natural shine, and as a final step after CA finish on any species. Also excellent for stabilized wood, which responds beautifully to buffing.

5. Lacquer (Spray or Wipe-On)

Lacquer provides a durable, clear topcoat that dries quickly and can be built up in multiple coats for a high-gloss result. It's less common in pen turning (where CA dominates) but widely used for bowls, hollow forms, and decorative pieces where a protective film finish is desired.

How to apply:

  1. Sand to 220–320 grit.
  2. Apply thin coats — spray lacquer from 8–10 inches, or wipe-on lacquer with a lint-free cloth.
  3. Allow each coat to dry fully (15–30 minutes for spray lacquer).
  4. Sand lightly with 400 grit between coats to remove dust nibs.
  5. Apply 3–5 coats, then buff with a fine polishing compound for a glassy result.

Best for: Bowls, hollow forms, and decorative pieces. Works well on most domestic and exotic species. Avoid on oily woods without first wiping with denatured alcohol to improve adhesion.

Choosing the Right Finish

Here's a quick reference to match the finish to the project:

Finish Best For Avoid On
CA Finish Pens, stoppers, stabilized wood Large bowls (time-consuming)
Friction Polish Decorative pieces, bowls High-wear daily-use items
Oil Finish Functional bowls, tool handles Oily woods, stabilized wood
Buffing System Dense hardwoods, after CA Soft or open-grained woods
Lacquer Bowls, hollow forms Oily woods (without prep)

The Golden Rule of Woodturning Finishes

Whatever finish you choose, surface preparation is everything. A finish amplifies what's underneath it — scratches, tool marks, and sanding lines will all show up more clearly under a gloss finish than they do on bare wood. Take the time to sand thoroughly through the grits, and your finish will reward you every time.

Looking for premium turning blanks that finish beautifully? Browse our collections: Pen Blanks, Stabilized Wood, African Blackwood, and Cocobolo.

Back to News