Jigsaw is one of the most versatile power tools in your DIY projects toolbox. Jigsaws are designed to shape and cut materials such as wood, plasterboard, vinyl, PVC sheeting, etc.
Introduction
Jigsaws are indeed one of the most versatile power tools in your DIY arsenal. They can efficiently shape and cut materials like wood, plasterboard, vinyl, and PVC sheeting. But the pressing question is: Can a jigsaw cut metal? The answer is yes! A jigsaw can be employed to cut various types of metal, including metal pipes and sheet metal.
Cutting Capabilities of a Jigsaw
- Soft Metals: Standard jigsaws can easily cut soft metals like aluminum.
- Hard Metals: Heavy-duty jigsaws are capable of cutting through 10 mm steel and 30 mm non-ferrous metals.
For intricate cuts in metal, choosing the right blade is crucial. It is advisable to opt for bi-metal or carbon tungsten blades, especially those with a TPI (Teeth Per Inch) greater than 21, as this significantly affects cutting performance on hard metals.
How to Select the Best Jigsaw for Cutting Metal
When choosing a jigsaw for metal cutting, you should consider the following features:
1. Motor Power
Motor power varies between corded and cordless jigsaws:
- Corded Jigsaws: Typically range from 4 to 7 amps.
- Cordless Jigsaws: Usually have a voltage range of 18 to 20 volts.
For metal cutting, it’s best to select a jigsaw with at least 6.5 amps (or 670W) to ensure smooth cuts.
2. Variable Speed Settings
Most jigsaws offer variable speed features. For effective metal cutting:
- An optimal speed range is between 500 to 3,000 SPM (Strokes Per Minute).
- A slower speed is recommended for harder materials like steel to ensure precision.
Best Jigsaw Blades for Cutting Metal
Selecting the appropriate blade is critical for achieving quality cuts. Here are two recommended types of blades:
| Blade Type | Composition | Best For | Lifespan |
|---|---|---|---|
| Bi-Metal Blade | Combination of High-Speed Steel (HSS) and High-Carbon Steel (HCS) | Hardwoods and metals | Up to 10x longer than standard blades |
| Tungsten Carbide | Carbon and tungsten compounds | Hard materials like ceramic and steel | Generally lasts longer than standard steel blades |
TPI Recommendations for Metal Cutting
- 18 TPI: Suitable for cutting thin-wall pipes and softer metals like aluminum.
- 21-24 TPI: Ideal for thicker and harder metals like steel, providing smoother and more controlled cuts.
Required Tools for Cutting Metal with Jigsaws
When preparing to cut metal, ensure you have the following tools:
- Clamps: For securely holding the workpiece in place.
- Extension Cord: To allow for uninterrupted cutting.
- Jigsaw: Ensure it’s suitable for metal cutting.
- Appropriate Blade: Select according to the material being cut.
- Sawhorses or Workbench: Useful for larger workpieces.
- Clear Workplace: To maintain safety and efficiency.
- Tape Measure, Pencil, Template: For accurate measurements and markings.
Safety Precautions During Cutting
- Personal Protective Equipment (PPE): Always wear safety glasses, hearing protection, and sturdy gloves.
- Footwear: Use reinforced work shoes to protect against falling metal scraps.
Step-by-Step Guide: How to Cut Metal with a Jigsaw
Step 1: Prepare Your Metal Workpiece
- Mark the cut line clearly.
- Securely clamp the workpiece to a stable surface like a table or workbench.
- If needed, use scrap plywood to sandwich thin metal for better support and to prevent distortion.
- If plunge cutting is necessary, drill a starter hole with a diameter of 5 to 8 mm to allow the jigsaw blade to enter.
Step 2: Mount the Appropriate Blade
- Select the right blade for metal cutting and mount it securely in the saw.
Step 3: Check Saw’s Cutting Settings
- Set the jigsaw to the straight-down position, ensuring the orbital setting is at zero.
- If you’re concerned about surface scratches, apply masking tape to the workpiece.
Step 4: Complete Your Cut
- Switch on the saw and let it reach full speed before starting.
- Glide the blade into the workpiece, following the marked line.
- For tight curves, make relief cuts to reduce blade binding.
Step 5: Maintain Cutting Quality
- Periodically pause to allow the blade to cool and apply cutting fluids to reduce heat buildup.
- Adjust clamps and rotate the workpiece as necessary for the best cutting angle.
Final Thoughts
A jigsaw is a highly versatile tool that can be used for various purposes, including cutting metal. By selecting the right blades and following the appropriate techniques, you can achieve excellent results in your metal cutting projects. After reviewing this article, you should have a solid understanding of whether a jigsaw can effectively cut metals.