Adjusting the air flow shutter and achieving optimum suction

Whilst some applications require a strong vacuum, others demand powerful suction through the exhaust slots. In order to achieve optimal results, we recommend using the air flow shutter to control the extraction air flow.

How to adjust the air flow shutter

When using a vacuum table, the air flow shutter effectively regulates the exhaust system and the 75mm exhaust connection on the Speedy 300, Speedy 400 and SP500.

By simply adjusting the air flow shutter and reducing the air flow on the exhaust connection, the suction at the table is automatically enhanced. A stronger vacuum allows a firmer hold of films, paper and other thin materials. The cutting quality of acrylic and plastic materials is also significantly increased, as the resulting fumes are instantly extracted. This ultimately provides clear and shiny cutting edges.

Adjusting the air flow shutter

laser exhaust system throttle

Shutter position: closed


  • Full suction at the vacuum table
  • No extraction via the exhaust slots in the processing area

When to use:

  • Ideal for cutting
laser exhaust throttle valve

Shutter position: partially open


  • When the air flow shutter opening is narrow, more pressure will act at the vacuum table, and less fume will be removed in the processing area.

When to use:

  • Ideal for combining engraving and cutting with low dust generation.
laser exhaust system throttle valve

Shutter position: open


  • Suction at the table and in the processing area is normal, as if no air flow shutter were installed.

When to use:

  • Ideal in case of strong dust development, e.g. when engraving stamp rubber.

Further information

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