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Portable Gas Cutting Machines: Cigweld’s COMET Platecutter & COMET Pipecutter

When you need straight, repeatable cuts on plate or pipe, a portable gas cutting machine saves time and reduces rework. Cigweld’s COMET Platecutter and COMET Pipecutter are built for tough Australian workshop and site conditions, giving you consistent cuts without the cost or footprint of a complete CNC system.

Why Choose a Cigweld Portable Gas Cutting Machine?

Instead of freehanding every cut, a Cigweld portable gas cutting machine provides controlled travel and steady torch positioning. In a nutshell, this translates to:
  • Straighter cuts and cleaner bevels
  • Less grinding and starting your work over from scratch
  • Consistent travel speed over long passes
  • Easier repeat jobs for production work
Pair your machine with COMET cutting nozzles matched to your material thickness and gas process.

COMET Platecutter: For Plate Cutting & Bevelling

The COMET Platecutter is a motor-driven carriage that runs on a track for straight-line, bevel, and circle cutting on a plate. Once you set the direction and travel speed, the machine delivers smooth, controlled movement, so your cut quality depends less on operator fatigue. Typical uses include:
  • Strip cutting plate for fabrication
  • Preparing the bevel edges for welding
  • Repetitive production cutting where accuracy matters
The compact chassis, robust drive, and torch, designed for COMET high-speed cutting nozzles, make it a solid choice for workshops that regularly handle plate work.

COMET Pipecutter: For Pipe Cutting & Bevelling

The COMET Pipecutter cuts pipes only. It mounts on a chain wrapped around the pipe and travels the circumference, keeping torch angle and stand-off steady for square, consistent cuts. Common applications include:
  • Pipe spool fabrication and fit-up
  • On-site pipe cutting during installation or shutdowns
  • Process and mechanical services pipe work
For anyone cutting pipe regularly, the COMET Pipecutter helps standardise your cuts, speed up fit-up, and reduce weld correction.

Choosing the Right COMET Portable Gas Cutting Machine

Choose the machine that matches the work you do most often:
  • Mostly plate work? Choose the COMET Platecutter.
  • Mostly pipe work? Choose the COMET Pipecutter.
  • Do both? Many shops operate a plate cutter in the workshop and a pipe cutter for site work, utilising the same COMET gas equipment and cutting nozzles for both.
Read more  

Portable Gas Cutting Machines: Quick FAQs

A portable gas cutting machine is a compact, mechanised carriage that carries a gas cutting torch. Instead of cutting freehand, the machine controls the travel speed and path along a track or around a pipe, helping you produce straighter, more consistent cuts and bevels with less effort.

  • The COMET Platecutter cuts straight lines, bevels, and circles using a track system.
  • The COMET Pipecutter mounts on a chain around the pipe and travels around the circumference to cut and bevel the pipe.

Both are portable gas cutting machines, but each performs a different type of work: plate cutting versus pipe cutting.

COMET portable gas cutting machines are associated with fabrication shops, maintenance and shutdown work, construction, pipe spool fabrication, and general industrial cutting. They are ideal anywhere you need repeatable straight cuts, bevels, or accurate pipe cuts, without setting up an extensive CNC system.

These machines typically perform oxy/fuel cutting of carbon steel. The actual thickness range depends on the size of your cutting nozzle, the type of gas used, the gas pressure, and the travel speed. Always refer to the cutting data for your cutting zozzles, and follow the recommended settings for the material thickness.

COMET portable gas cutting machines are designed for oxy/fuel cutting processes, such as oxy-acetylene or oxy-LPG, when used with suitable torches, nozzles, and gas equipment. Always check the product documentation and site requirements, and ensure that regulators, hoses, and flashback arrestors have the correct rating for the gas you are using.

Yes — the torches supplied with COMET portable gas cutting machines are designed to suit COMET high-speed cutting nozzles (such as Type 41 and Type 44). Using genuine COMET cutting nozzles and compatible gas equipment helps you achieve better cut quality and reliability.

COMET portable gas cutting machines are compact and designed for easy movement around the workshop or between jobs. With their robust construction and simple controls, they are well-suited for site use, provided you have a stable work area, an appropriate gas supply, and strict adherence to site safety procedures.

Start with the recommended travel speed for your nozzle size and plate thickness (refer to the cutting data). Watch the kerf and slag while cutting:

  • If slag is building up and not clearing, you may be travelling too fast.
  • If the cut face is very rough or the kerf is excessively wide, you may be too slow.

Make minor adjustments until you achieve a smooth cut face and consistent slag flow.

Basic maintenance includes keeping the track or chain clean, checking drive wheels and gears for wear, inspecting hoses and connections for leaks, and keeping the torch head and cutting nozzle in good condition. Follow the maintenance schedule in the product manual and replace worn consumables promptly.

Always follow standard oxy/fuel safety practices:

  • Use correctly rated regulators, hoses, and flashback arrestors
  • Check all connections for leaks before lighting up
  • Wear appropriate PPE, including eye and face protection, gloves, and flame-resistant clothing
  • Keep flammables clear of sparks and hot slag
  • Ensure adequate ventilation and follow site hot-work procedures

Refer to the product instructions and your workplace safety requirements before operating any portable gas cutting machine.

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