DIY Resin and Burl Wood Bracelets: The CNC Method

Updated at: 25/03/2025

The allure of handcrafted jewelry is undeniable, and the combination of rich burl wood and shimmering resin creates pieces of breathtaking beauty. Traditional methods of crafting these bracelets can be time-consuming and require specialized skills. However, with the precision and efficiency of a CNC machine, the process becomes significantly more accessible and repeatable, allowing for the creation of stunning, consistent designs. Imagine the possibilities: intricate patterns carved into the wood, perfectly poured resin encapsulating delicate details, and the satisfying weight of a high-quality, uniquely crafted bracelet on your wrist.

This article will guide you through the fascinating world of crafting DIY resin and burl wood bracelets using a CNC machine. We'll explore the process from initial design and material selection to the final polishing and finishing touches, demonstrating how you can leverage technology to create truly bespoke jewelry. Let's dive into the step-by-step process, beginning with preparing your burl wood blanks.

Preparation and Safety Guidelines

Tools Needed
  • Resin
  • Burl wood
  • Acrylic cement
  • Hot glue
  • Silicone mold (optional)
  • Plywood (optional)
  • CNC machine
  • Hole saw (optional)
  • Bandsaw
  • Router table
  • Palm sander
  • Sandpaper (80, 120, 180, 220, 400 grit)
  • Sponge sandpaper
  • TotalBoat Thick Set epoxy
  • Black Diamond pigments
  • Tonal Bolts Wood Hoodie
  • Clamps
Safety Guidelines
  • Always wear appropriate safety glasses and a respirator when working with resin and CNC dust. Resin fumes can be harmful, and inhaling CNC dust can be hazardous to your health.
  • Ensure adequate ventilation in your workspace. Resin requires proper curing time and a well-ventilated area to avoid trapping fumes.
  • Use caution when operating the CNC machine. Follow all manufacturer instructions and safety protocols to prevent injury.

Step-by-Step Instructions

  1. Mold Creation

    • Create a mold using acrylic and acrylic cement or a plywood box.
    Create a mold using acrylic and acrylic cement or a plywood box.
    Mold Creation

  2. Prepare Burl Wood Base

    • Glue the burl wood base to the mold's bottom to prevent floating.

  3. Resin Mixing and Pouring

    • Mix resin (TotalBoat Thick Set epoxy) with a small amount of black diamond pigment for a subtle tint.
    • Pour the tinted resin into the mold.
    Pour the tinted resin into the mold.
    Resin Mixing and Pouring

  4. Resin Curing

    • Let the resin cure completely.
    Let the resin cure completely.
    Resin Curing

  5. Remove from Mold

    • Remove the cured resin block from the mold.
    Remove the cured resin block from the mold.
    Remove from Mold

  6. Shape Bracelets

    • Use a CNC machine or hole saw to cut the resin block into a bracelet ring shape. (CNC is described in the video but a hole saw is a faster alternative).
    Use a CNC machine or hole saw to cut the resin block into a bracelet ring shape. (CNC is described in the video but a hole saw is a faster alternative).
    Shape Bracelets

  7. Cut Bracelet Blanks

    • Slice the ring into individual bracelet blanks using a bandsaw.
    Slice the ring into individual bracelet blanks using a bandsaw.
    Cut Bracelet Blanks

  8. Edge Chamfering

    • Chamfer the edges of the bracelets using a router table.
    Chamfer the edges of the bracelets using a router table.
    Edge Chamfering

  9. Sanding and Finishing

    • Sand the bracelets using palm sander and sponge sandpaper (80-400 grit), progressing through different grits for a smooth finish. Wet sanding can be added for extra smoothness.
    Sand the bracelets using palm sander and sponge sandpaper (80-400 grit), progressing through different grits for a smooth finish. Wet sanding can be added for extra smoothness.
    Sanding and Finishing

  10. Polishing

    • Polish the bracelets with Tonal Bolts Wood Hoodie for a polished matte finish.
    Polish the bracelets with Tonal Bolts Wood Hoodie for a polished matte finish.
    Polishing

Read more: DIY Crystal Bracelet: Easy Square Knot Tutorial

Tips

  • Using a plywood box instead of an acrylic mold simplifies the process and eliminates the need for gluing.
  • A hole saw can be a quicker and simpler alternative to a CNC machine for cutting the bracelet ring shape.
  • The bracelets spin freely on the palm sander which helps to provide an even sanding without manual manipulation.

Common Mistakes to Avoid

1. Inaccurate CNC Cutting

Reason: Improperly calibrated CNC machine or flawed design file leads to misaligned resin inlay or inaccurate burl wood cuts, resulting in an uneven or poorly fitting bracelet.
Solution: Recalibrate your CNC machine and meticulously double-check your design file before cutting.

2. Resin Curing Issues

Reason: Incorrect resin mixing ratio, improper curing environment (temperature and humidity), or insufficient curing time can lead to sticky, cloudy, or otherwise flawed resin.
Solution: Strictly adhere to the resin manufacturer's instructions for mixing, curing time, and environmental conditions.

FAQs

What type of resin is best for casting with burl wood in a CNC process?
Epoxy resin is generally preferred for its clarity, durability, and relatively low viscosity, which allows for easier filling of intricate CNC-carved designs in burl wood. UV resin can be used, but requires specialized equipment and careful timing to prevent curing too quickly within the design.