Mastercool 70040 — All-In-One Swaging Punch (1/4", 5/16", 3/8", 1/2", 5/8") Nickel-Chrome Finish

Professional All-In-One Swaging Punch: Five Sizes in One Heat-Treated Tool

The Mastercool 70040 all-in-one swaging punch is a professional tool for expanding copper tubing to create slip-fit connections. With five common sizes (1/4", 5/16", 3/8", 1/2", 5/8") in one compact tool, the 70040 enlarges one end of copper tubing to accept a piece of original size tubing, allowing you to solder them together like a fitting. Heat-treated for durability and finished with nickel-chrome plating, this is the economical, space-saving solution for professional swaging work.

All-In-One Design: Five Sizes in One Tool

The all-in-one design features five swaging sizes in a single compact tool. Instead of carrying five separate punches, the 70040 provides complete swaging capability in one tool that fits easily in your tool bag. This design saves space, reduces cost, and ensures you always have the right size for the job.

Why This Matters: Swaging work often requires multiple sizes during a single job. The all-in-one design means you have all five common sizes immediately available, eliminating the need to search for individual punches or carry multiple tools.

Heat-Treated for Durability

The tool is heat-treated for durability, ensuring it maintains its shape and swaging accuracy even after thousands of operations. Heat treatment hardens the steel, preventing deformation under the impact forces of swaging work. This is a professional-quality tool built to last through years of daily use.

Nickel-Chrome Finish: Corrosion Resistance

The nickel-chrome finish provides corrosion resistance and a professional appearance. The plating protects the tool from rust and oxidation, ensuring long service life even in damp workshop environments.

Five Common Swaging Sizes

The 70040 swages five common copper tubing sizes:

• 1/4" O.D. — Small refrigeration and plumbing lines
• 5/16" O.D. — R410A and larger systems
• 3/8" O.D. — Common suction lines
• 1/2" O.D. — Commercial suction lines and plumbing
• 5/8" O.D. — Large commercial systems

Key Features

• All-In-One Design — Five sizes in one compact tool
• Heat-Treated Steel — Durable, maintains accuracy
• Nickel-Chrome Finish — Corrosion-resistant, professional appearance
• Five Sizes — 1/4", 5/16", 3/8", 1/2", 5/8" O.D.
• Punch-Type Design — Impact swaging for reliable expansion
• Space-Saving — One tool replaces five separate punches
• Professional Quality — Built for daily use

Technical Specifications

• Model: 70040
• Type: All-in-one punch-type swaging tool
• Sizes: 1/4", 5/16", 3/8", 1/2", 5/8" O.D.
• Construction: Heat-treated steel
• Finish: Nickel-chrome plating
• Application: Copper tubing swaging
• Operation: Impact with hammer

Complete Swaging Tool Range

The 70040 is part of Mastercool's complete swaging tool range:

All-In-One Tool:

• 70040: All-in-one swaging punch (5 sizes: 1/4" to 5/8") — this model

Complete Sets:

• 70048: Set of 5 swaging punches (1/4", 5/16", 3/8", 1/2", 5/8" O.D.)
• 70049: Flaring bar and set of 5 punches (1/4", 5/16", 3/8", 1/2", 5/8" O.D.) in box

Individual Punches:

• 70041: 1/4" size / 1/8" length
• 70042: 5/16" size
• 70043: 3/8" size / 1/4" length
• 70044: 1/2" size / 3/8" length
• 70045: 5/8" size / 1/2" length
• 70046: 3/4" size / 5/8" length
• 70047: 7/8" size / 3/4" length

Perfect For

• HVAC technicians creating slip-fit connections
• Plumbers working with copper tubing
• Refrigeration installations requiring swaged joints
• Mobile service operations needing compact tools
• Workshop installations with professional standards
• Any copper tubing work requiring swaged connections

What is Swaging?

Swaging is the process of expanding the end of a tube so another tube of the same size can fit inside it, creating a slip-fit connection. This is commonly used in:

• Refrigeration Line Sets — Connecting field-fabricated lines
• Plumbing Repairs — Joining copper tubing without fittings
• HVAC Installations — Creating custom-length line sets
• Tight-Space Repairs — Where couplings won't fit

How to Use Punch-Type Swaging Tools

1. Cut Tubing Square — Use tubing cutter for clean, square cut
2. Deburr Inside and Outside — Remove all burrs with reamer
3. Select Correct Size — Choose swaging size matching tubing O.D.
4. Position Punch — Insert punch into tube end
5. Impact with Hammer — Strike punch firmly to expand tubing
6. Check Fit — Test fit with mating tube; should slide in smoothly
7. Clean and Flux — Clean surfaces and apply flux
8. Solder Joint — Heat and solder like a fitting

Tips for Professional Swaging

• Clean Cuts — Square, clean cuts are essential
• Complete Deburring — Remove all burrs before swaging
• Firm Impact — Strike punch firmly for proper expansion
• Check Fit — Mating tube should slide in smoothly but not loosely
• Clean Before Soldering — Remove oxidation and debris
• Proper Flux — Use appropriate flux for copper
• Heat Evenly — Apply heat evenly around joint

Why Choose the Mastercool 70040?

• All-In-One — Five sizes in one compact tool
• Heat-Treated — Durable, maintains accuracy
• Nickel-Chrome Finish — Corrosion-resistant
• Space-Saving — One tool replaces five punches
• Professional Quality — Built for daily use
• Economical — Less expensive than buying five separate punches
• Complete Coverage — Five most common sizes

70040 vs 70048 vs 70049: Which Swaging Tool?

Choose 70040 (All-In-One) When:

• You want the most compact solution
• You need all five sizes in one tool
• Space in tool bag is limited
• You want the most economical option

Choose 70048 (Set of 5 Punches) When:

• You prefer individual punches for each size
• You want dedicated tools for frequent swaging
• You need replacement for lost individual punch

Choose 70049 (Flaring Bar + 5 Punches) When:

• You need both flaring and swaging capability
• You want organised storage in box
• You're setting up complete tube preparation kit

Common Swaging Mistakes to Avoid

• Not Deburring — Burrs prevent proper fit and cause leaks
• Wrong Size Punch — Must match tubing O.D. exactly
• Insufficient Impact — Weak strikes create incomplete expansion
• Over-Swaging — Excessive expansion creates loose fit
• Dirty Tubing — Clean before swaging and soldering
• Poor Soldering — Swaged joint must be properly soldered

The Economical All-In-One Swaging Solution

The Mastercool 70040 all-in-one swaging punch is the economical, space-saving solution for professional copper tubing swaging. With five common sizes (1/4", 5/16", 3/8", 1/2", 5/8") in one heat-treated, nickel-chrome finished tool, the 70040 delivers complete swaging capability in a compact package. One tool replaces five separate punches, saving space and cost whilst ensuring you always have the right size for the job.

Five sizes in one. Heat-treated steel. Nickel-chrome finish. Professional all-in-one swaging punch.