If you need to cut MC (metal-clad) cable but don’t have a Roto-Split tool or MC cable cutter on hand, don't worry—you can still get the job done with some basic tools and careful technique. This guide shows you how to do it safely, cleanly, and without damaging the inner wires.
How to Cut MC Cable Without a Special Tool
🔍 What Is MC Cable?
MC cable (metal-clad cable) is a type of armored electrical wire used in residential, commercial, and industrial installations. Its tough metal sheath protects the internal conductors, but makes it more difficult to cut without the right tools.
🧰 Tools You Can Use (That Aren't MC-Specific)
Even without a specialty MC cutter, these common tools can help:
| Tool | Function | Availability |
|---|---|---|
| Hacksaw | Cuts through outer armor | Common |
| Diagonal Pliers ('Dykes') | Snips armor and wires | Very common |
| Utility Knife (with caution) | Light scoring of sheath | Common |
| Screwdriver + Pliers | For prying and bending open armor | Common |
| Metal File | Smooths sharp edges | Recommended |
⚠️ Avoid using your teeth, kitchen scissors, or trying to 'twist break' the cable barehanded. It’s unsafe and damages the cable.
⚠️ Before You Start: Safety First
Turn off the power at the breaker box
Test the cable to make sure it’s de-energized
Wear cut-resistant gloves and safety glasses
✂️ Step-by-Step: How to Cut MC Cable Without a Special Tool
1. Mark Your Cut
Use a marker or masking tape to mark the cut location clearly.
2. Score the Armor with a Hacksaw
Secure the cable on a workbench or hold it firmly.
Use a fine-tooth hacksaw to lightly score the armor—don’t cut all the way through.
Only go deep enough to weaken the outer sheath.
3. Bend the Cable to Snap the Armor
Gently bend the cable back and forth at the score line.
The metal sheath should begin to separate or crack along the score.
4. Twist and Remove the Armor
Use pliers to grab the loose sheath and twist it off.
Be careful not to nick the insulation on the inner conductors.
5. Cut Internal Wires
Use diagonal pliers or wire cutters to trim the individual wires.
6. Smooth the Edges
File down sharp edges of the cut armor to avoid cable damage.
Insert a red anti-short bushing to protect conductors inside the armor.
✅ Final Tips
Work slowly—better safe than fast.
Practice on scrap cable if possible.
Always add anti-short bushings after cutting armored cable.
🧠 Can You Use a Dremel or Angle Grinder?
Yes, if you're experienced with power tools, a rotary tool (Dremel) with a metal-cutting wheel or even a small angle grinder can cut through MC cable easily. But:
These generate heat and sparks
Not ideal for tight or indoor spaces
Always wear full safety gear
🛠️ Better Long-Term: Get the Right Tool
While this guide shows how to manage in a pinch, frequent MC cable work is much easier and safer with a Roto-Split tool or a dedicated MC cable cutter. They:
Make cleaner cuts
Prevent conductor damage
Save time in bulk installations
📌 Summary
You can cut MC cable without a dedicated tool—but it takes patience, safety awareness, and the right substitute tools. This DIY approach is great for one-time jobs, but for regular work, consider investing in a proper cutter.
