What are the proper procedures and techniques for laser cutting ACRYLITE® Resist sheet?

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What are the proper procedures and techniques for laser cutting ACRYLITE® Resist sheet?

ACRYLITE® Resist 65 acrylic sheet can be fabricated using the same machinery that is used on ACRYLITE® extruded (FF) acrylic sheet. Fabrication techniques are nearly the same. Minor modifications may be necessary due to the sheet's unique properties. Its greater impact resistance and special formulation require special care in certain machining operations. In general, equipment should be stable, vibration free and show a minimal amount of tool wobble (run-out). For best results, follow the recommendations below and refer to the information prepared for ACRYLITE® extruded (FF) sheet for additional information.

Laser Cutting and Engraving

ACRYLITE® Resist 65 sheet can be successfully laser cut and laser engraved. Typically CO2 lasers are employed in sizes ranging from 25 watts to 400 watts per laser head. The primary benefit of using a higher powered laser is to increase cutting speed. Additionally, larger lasers often come equipped with an air or gas assist and a vacuum table. Both of these options help to remove vapors generated during the cutting operation leading to improved results. When laser engraving, start with the same operating parameters as used with continuously manufactured or extruded acrylics. The resulting engraved designs will have a relatively clear appearance (the same as with continuously manufactured and extruded acrylic sheet). The engraved images will not be as white as those achieved when engraving cell cast acrylic sheet. When laser cutting ACRYLITE® Resist 65 sheet, it is especially advantageous to have a vacuum table and gas assist option. The gases generated during the laser cutting operation can deposit on the edges of ACRYLITE® Resist 65 sheet and form a tacky film. Efficient removal of vapors minimizes this problem. The tacky deposits can be removed by wiping the laser cut edges afterwards with VM&P naphtha, which can be obtained at most hardware stores.
Fabrication manual: Laser Machining

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