More optimal anode slots in every respect

Control the volume of carbon
removed from the anode

Boost efficiency of slotting
and electrolysis processes


Sawnode offers more than just slotting saws.
We are your partner for optimal slotting.

For slots of the same depth, thinner slots reduce the volume of carbon removed from the anode and increase the amount of aluminum produced per anode.

A thinner and deeper slot increases the efficiency of the electrolysis process. More aluminum is produced with the same amount of carbon removed from the anode.

Sawnode saws deliver thinner and/or deeper slots. As your partner, we work with you to determine the optimal ratio for your needs so we can manufacture a custom saw and boost your performance.

Get the optimal ratio if you currently use saws to cut slots or are planning to.

A slot that’s thinner OR deeper, or one that’s thinner AND deeper.

Sawnode has totally redesigned the anode slot saw

The patented Sawnode blade marks a major breakthrough for aluminum smelters. You have to see it in action to truly appreciate the advantages it offers.

  • Unique cutting concept using thinner self-blocking segments
  • Totally redesigned blade for greater rigidity

The new segment/blade combo eliminates vibrations that limit the width-to-depth ratio achieved with conventional saws.

If you’ve already achieved the maximum anode depth, Sawnode saws can deliver thinner slots.

If you already cut thin slots, Sawnode can make them deeper.

In either case, our objective is to optimize your slots by making them deeper and/or thinner based on your specific needs.

With Sawnode, you get the most out of your anode slotting.

An optimal slot ratio makes all the difference.

  • Considerable reduction in the amount of carbon removed during slotting
  • Higher effective utilization percentage for slots
  • Longer anode service life
  • Reduced bath effects
  • Optimization of anode exchange surface
  • Better alumina dissolution
  • Increase in Faraday effect—and related profits

In addition to providing an optimal slot width-to-depth ratio, the mechanical features of the blade offer a number of advantages during operation.

  • Preserves the integrity of the anode block
  • Extends saw service life
  • Reduces maintenance costs

Much quieter operation

Every time Sawnode saws are installed, people immediately notice—and appreciate—the significant decrease in the level of noise.

Opération silencieuse

In plants where two slotting machines were placed next to each other, the one with Sawnode saws was virtually silent next to the one fitted with our competitors’ saws.

Enjoy substantial gains in operations and profitability when you switch from press-forming to cutting with Sawnode

Press-formed or mechanical slots: A decision not to be taken lightly

When it comes to making slots in anode blocks, whether via press-forming or cutting, there are two key factors: the amount of carbon left in the anode and the effective depth of the slots.

Typical slot results by method on an anode 625 mm high (depth x thickness):

  • Press-forming:
    ± 300 mm x ± 18 mm
  • par Sawnode
    ± 400 mm x ± 10 mm

Results :
26 % less carbon removed
25 % deeper slots

Plus, the direct and indirect advantages mechanical slotting offers at the various anode production, handling, and use stages make it a very attractive option.



  • Narrower slots, thereby increasing the amount of consumable carbon in the bath
  • Flexibility with regard to slot orientation
  • Flexibility in terms of slot placement and geometry
  • More even anode block density
  • No additional stress on slot edges
  • No damage caused by unmoulding
  • Reduction in scrap rate
  • No moulds to clean


  • Additional equipment needed
  • Need to recover carbon dust
  • Saw maintenance



  • No additional equipment
  • Reduced handling of anode blocks
  • No need to recover carbon dust


  • Slots very wide, up to 25 mm
  • Major carbon losses
  • Limited slot depth
  • Slot orientation dictated by the direction in which the anode is pushed through the mould table
  • Uneven carbon density in anode
  • Stress on the slot edges
  • Greater air permeability of anode
  • Risk of damage when unmoulding
  • Risk of cracks along the vertical axis of slots
  • Difficulty cleaning moulds

Choose Sawnode for increased profitability

Sawnode technology is the choice for greater direct and indirect profitability over the short and long term.

With deeper, narrower slots, anode blocks will perform better in the aluminum production bath and deliver noticeable advantages. Moreover, a number of other issues must be taken into account throughout the process, from baking the block to reusing unused portions of it. Ultimately, economic, human, and environmental challenges must all be factored in, and Sawnode technology is designed to integrate seamlessly into the comprehensive logical vision of a plant.

For new aluminum smelting plants

  • All the benefits of optimal slots
  • State-of-the-art equipment

For existing aluminum smelting plants

  • All the benefits of optimal slots
  • Increased profitability of existing equipment
  • Rapid return on investment

Greater flexibility for operators

  • Option of increasing electrical current to produce more aluminum during electrolysis
  • Option of reducing electrical current to produce the same amount of aluminum at a lower cost

Logo Alusaw

Value that primary aluminum smelting plants can depend on

Over the last 30 years, Alusaw has emerged as the reference in the sawing of aluminum ingots and plaques. In Quebec, all aluminum smelters that use this type of saw choose Alusaw.

Its development was a major industry breakthrough that has boosted performance and reduced operating costs.

Alusaw saws, which can measure up to 2.2 m in diameter, deliver results largely superior to those of conventional high speed steel saws and even other carbide blades on the market.

Download a PDF version
of the Alusaw brochure


Impeccable quality to boost the bottom line


The extremely hard carbide grades used in the cutting tips deliver optimal results.


The special steel used to manufacture our saws makes them more resistant to the wear and tear of sawing. Many Alusaw blades are still going strong after 20-plus years of service.


The rigidity and flatness of the blade yield a better cut finish and quieter cutting.

Minimal maintenance

The riveted segment assembly makes repairs quick and easy on saws that would otherwise be deemed unusable.


We can manufacture blades to a wide range of specifications, including saw diameter, thickness, and teeth. This allows us to deliver custom blades adapted to your equipment, taking into account the power available as well as the desired cutting time and finish.

Sawnode, a subsidiary of Outillage Industriel Québec

Outillage Industriel Québec (OIQ) is a saw equipment specialist that has been selling tools and machine tools to machine shops since 1952. OIQ has been serving the primary aluminum industry for over 25 years.

The Sawnode subsidiary handles the development, marketing, and technical support for Sawnode saws.

Sawnode is also the international distributer of Alusaw saws.

Alusaw, value that primary aluminum smelting plants can depend on

The first Alusaw saws were developed in the late 1980s—and they proved to be a groundbreaking innovation in the fabrication of circular saws for cutting aluminum ingots. By using new materials, both for the saw blade itself and for the saw teeth, we were able to create a first high performance carbide segment saw.

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