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The MTT Micro 6000 flexible twin tip is a small oxy-acetylene brazing and heating tip, not a MIG part, despite sitting near MIG consumables in many listings. It carries the Uniweld Micro 6000 name in retailer catalogs and is aimed at brazing copper tubing up to about 1 in. It is worth considering if you braze HVAC or plumbing joints with a compatible oxy-acetylene handle. Skip it if you run propane, MAPP or MIG equipment.
MTT Micro 6000 twin tip at a glance
| Item | Per the listing and retailer spec pages |
|---|---|
| Type | Flexible V-style twin brazing and heating tip |
| Fuel gases | Oxygen and acetylene (oxy-acetylene) |
| Handle fit | 71 handle or WH550 handle |
| Brazing capacity | Copper tubing up to about 1 in |
| Materials | Copper elbow; brass mixer and nut |
| Size and weight | About 4.12 x 0.75 x 0.68 in; 2.5 oz |
| Seals | Two O-rings, hand-tightened nut |
| Origin | Listing states made in the USA |
Check the current listing for what is in the box and the latest details.
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What it is and who it suits
A twin tip splits the flame into two outlets that you can re-bend. That spreads heat across both sides of a tube or fitting, so a copper joint reaches brazing temperature faster and more evenly than with a single point flame.
It suits refrigeration, HVAC and plumbing techs, and hobbyists who already own a compatible oxy-acetylene handle. It is not for steel welding or thick sections.
How to check it fits your setup
- Confirm your torch handle is a 71 or WH550 style. Handles with similar names from other makers may use different tip connections.
- Confirm you use oxygen and acetylene, not propane or MAPP. Tip orifices are sized for specific fuels.
- Check your regulators, hoses and flashback arrestors are rated for oxy-acetylene and in good condition.
- Compare the pipe size you work on with the 1 in listed capacity. Larger tubing usually needs a bigger tip.
- Look for a tip chart from the manufacturer for recommended gas pressures. Retailer pages list low working pressures, so do not guess; follow the chart.
Pros and limitations
Pros
- Bendable ends help reach joints in cramped spaces.
- Hand-tighten O-ring nut allows quick tip changes.
- Small and light, so it fits in a tool bag.
Limitations
- Limited to its listed handles and fuel gas.
- Low heat output means it is not a cutting or heavy welding tip.
- Repeated bending can eventually fatigue copper, so bend only as needed.
Safe use and care tips
- Inspect the tip, O-rings and seat for damage before every use.
- Purge and leak test with soapy water. Never use oil or grease on oxygen fittings.
- Acetylene working pressure must never exceed 15 psi (1 bar). Use a flashback arrestor and check valves.
- Light acetylene first, then add oxygen, and shut off in the reverse order. Follow your torch manual.
- Clean the orifices only with the correct tip cleaners, not drill bits.
- Wear shade-appropriate goggles, leather gloves and flame-resistant clothing, and keep a fire extinguisher nearby.
Brazing flux fumes and cadmium or lead-bearing alloys need good ventilation. Never braze on pipes that still hold refrigerant or fuel.
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Alternatives and related guides
- For a heavier tip family, see the Uniweld Type 17 weld and braze tip review.
- For a complete fuel setup, read the Kodilin brazing torch kit review.
- Need a regulator? See the Uniweld RO100 oxygen regulator review.
- For filler metal, see the brass brazing rods review.
Frequently Asked Questions
Is the MTT Micro 6000 a MIG welding part?
No. It is an oxy-acetylene brazing and heating tip. It does not fit MIG guns. Use it with a compatible 71 or WH550 torch handle, oxygen and acetylene, and appropriate regulators.
Can I use it with propane or MAPP gas?
The tip is described for oxygen and acetylene. Propane and MAPP need different orifice sizing and tips, so do not assume it works with them. Follow the manufacturer chart.
What can it braze?
The listing says it can braze copper tubing up to about 1 in. It is intended for small to medium copper work, such as HVAC and plumbing joints. It is not meant for cutting or thick steel welding.
Can I use it for soldering?
It can heat joints for soldering, but the flame is intended for brazing temperatures. A lower-heat torch is usually easier to control for soft soldering, and it reduces the chance of overheating copper.
Conclusion
The Micro 6000 twin tip is a focused brazing accessory for copper tubing work on a compatible 71 or WH550 handle. Verify the handle and fuel first, and buy a larger tip if you braze beyond the listed size.
