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How do you cut acrylic with a saw?

Published in Acrylic Cutting 3 mins read

Cutting acrylic with a saw requires using the appropriate saw type and blade, along with proper technique to avoid cracking or chipping the material. Both jigsaws and circular saws can be used, depending on the thickness of the acrylic sheet.

Choosing the Right Saw and Blade

  • Jigsaw: Effective for acrylic sheets up to 6mm thick.
    • Blade: Use a metal-cutting blade with reduced depth and fine, sharp teeth (5-6 teeth per cm). The finer the blade, the better the cut.
  • Circular Saw: Suitable for acrylic sheets of all thicknesses.
    • Blade: Ensure you use a blade specifically designed for plastics.

Cutting Acrylic with a Jigsaw

Here's how to cut acrylic using a jigsaw:

  1. Secure the Acrylic Sheet: Place the acrylic sheet on a stable surface and clamp it securely to prevent movement during cutting.
  2. Mark the Cutting Line: Use a marker to clearly indicate the cut line on the acrylic sheet.
  3. Set the Jigsaw:
    • Install the appropriate metal-cutting blade, ensuring it's securely fastened.
    • Adjust the jigsaw speed to a medium setting.
  4. Cutting:
    • Start the jigsaw and slowly guide it along the marked cutting line.
    • Apply gentle, consistent pressure. Avoid forcing the saw, as this can cause the acrylic to crack.
  5. Finishing the Cut: Allow the blade to come to a complete stop before removing it from the cut to prevent chipping.

Cutting Acrylic with a Circular Saw

Cutting acrylic with a circular saw is similar to cutting with a jigsaw but generally provides a cleaner, straighter cut, especially on thicker sheets.

  1. Secure the Acrylic Sheet: Place the acrylic sheet on a stable surface and clamp or otherwise secure it.
  2. Mark the Cutting Line: Use a marker to clearly indicate the cut line.
  3. Set the Circular Saw: Install a blade designed for cutting plastics.
  4. Cutting: Guide the circular saw steadily along the marked line, maintaining a consistent speed and pressure.
  5. Finishing the Cut: Complete the cut smoothly and carefully remove the acrylic piece.

General Tips for Cutting Acrylic

  • Slow and Steady: Cutting too quickly can generate heat, causing the acrylic to melt or crack.
  • Proper Support: Ensure the acrylic sheet is well-supported near the cutting line to prevent vibration and breakage.
  • Cooling: If the acrylic begins to heat up during cutting, pause and allow it to cool down. You can also use a lubricant, such as water, to help dissipate heat.

By following these guidelines, you can successfully cut acrylic sheets using a saw and achieve clean, professional-looking results.

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