Saw aluminum

Like any other metal, you can also saw aluminum. However, it is a soft metal, in addition to other properties of aluminum, which must be considered when sawing. Below we have summarized for you what to consider when sawing aluminum.

Properties of aluminum

The working and processing of aluminum differs significantly from that of other metals. It is above all the properties of aluminum that lead to:

  • special softness of the aluminum
  • Formation of an oxide layer
  • low melting point

Sawing and cutting of aluminum with suitable equipment

Specialist companies have suitable machinery and equipment for professional sawing and cutting of aluminum. Aluminum sheets are folded there, for example, at the bending bench. Metal saws, which are cooled, are suitable for sawing even large blocks.

The plasma cutter can also cut large aluminum components. For complex cuts and shapes, the water cutter is then used. This allows you to cut even the finest cooling fins into an aluminum component.

Sawing and cutting of aluminum by the handyman

Do-it-yourselfers usually do not have any of these devices, as the purchase is costly. In addition, usually only a few parts would be sawed or cut. Thus, these high costs are not amortized. For this reason, the following tools and machines are usually used for sawing aluminum in do-it-yourselfers:

  • Cuttermesser
  • shears
  • jigsaw
  • Circular saws (table or circular saw)
  • angle

The use of stainlee knife and tin snips for aluminum

With the Stainley or Cutter knife only very thin aluminum sheets can be cut, with the tin snips the sheet thickness should not exceed 1 mm. The accuracy of the cuts is rather inaccurate, but ultimately depends on the existing tools and your cutting experience.

The jigsaw for sawing aluminum

The jigsaw is suitable for sheets and thicker profiles (but certainly well below 1 cm). For this purpose, the pendulum must be switched off and the speed or the number of strokes must be significantly reduced. Also, the feed to be made is low, definitely much lower than when sawing wood. You can also use coolant with the jigsaw.

Saw aluminum with circular saws

Most circular saws are actually designed for woodworking, yet aluminum can be sawed to a certain extent. In addition to the corresponding saw blade, a correspondingly low speed must also be selected for the circular saw. Also, the feed must be low here.

The use of coolant is only in a hand-held circular saw with leadership in question, but still remains problematic. For a table saw, you do not need to use the coolant. The table saw motor hangs under the table and the risk of coolant running in and causing a short circuit is just too great. The use of the table saw is therefore least suitable.

Cut aluminum with the angle cutter

The angle cutter is not necessarily the perfect choice. Here are the speeds from home high and very difficult to keep small. The use of coolant is even less to think. But since the already high speed is added here, there is the greatest risk that the aluminum melts at the cutting edge. Be sure to use only metal cutting blades to cut aluminum.

The saw blades for sawing aluminum

The saw teeth should be as straight as possible and have plenty of space for the chip. In addition, saw blades for metal must be used. Multi-blades are absolutely unsuitable for aluminum. Also make sure that no other metals have been sawn with the saw blades. Ferrous metals and other metals can cause a chemical reaction on contact with aluminum. This includes, inter alia, pitting.

The coolant for sawing aluminum

Time and again is to be read by do-it-yourselfers who use alcohol as a coolant. In the professional area it is actually used, but only in compliance with safety regulations. Because the spirit can ignite when sawing aluminum in certain circumstances. Therefore, for sawing aluminum, preferably rely on emulsions for cooling made on a water basis.

The oxide layer

As soon as aluminum is exposed to the air, an oxidation layer forms within a few minutes. This can be desirable, but also disturbing (for example, when gluing, welding or painting).

Tips & Tricks

Depending on how you saw the aluminum, you will need to finish it afterwards. Here's how to grind aluminum, here's how to file aluminum.

Video Board: BOLTR: Makita Mitre Saw | Aluminum Cuts