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* '''In case of fire''': use the CO<sub>2</sub> extinguisher by the laser cutter first. Do not use the powder extinguisher unless you feel that you can't control the fire. '''Put it in the logbook''': tiny flames while cutting are normal; anything more must be reported. | * '''In case of fire''': use the CO<sub>2</sub> extinguisher by the laser cutter first. Do not use the powder extinguisher unless you feel that you can't control the fire. '''Put it in the logbook''': tiny flames while cutting are normal; anything more must be reported. | ||
* '''Never cut PVC or chlorinated plastic''': you should always know what material you are cutting, and chlorinated plastics should be avoided because they release chlorine gas when cut. [[Laser_Cutter/Instructions#Chlorine_Testing_and_Material_Safety|Guidelines for how to test materials.]] | * '''Never cut PVC or chlorinated plastic''': you should always know what material you are cutting, and chlorinated plastics should be avoided because they release chlorine gas when cut. [[Laser_Cutter/Instructions#Chlorine_Testing_and_Material_Safety|Guidelines for how to test materials.]] | ||
* '''You can't cut metal in the laser cutter''': if you wish to mark the metal, please use [http://hpclaser.co.uk/index.php?main_page=product_info&cPath=2&products_id=17 Thermark/Cermark], or use anodised aluminium. | * '''You can't cut metal in the laser cutter''': if you wish to [[Laser_Cutter/Metal|mark the metal]], please use [http://hpclaser.co.uk/index.php?main_page=product_info&cPath=2&products_id=17 Thermark / Cermark], or use anodised aluminium. | ||
==Using the laser cutter== | ==Using the laser cutter== |