# Safety Instructions

## General
- **ALWAYS SETUP AND TURN ON** the gas extractor and chiller (on the left side both switches)
- always wear safety gear (glasses)
- you don't want you material to melt -> higher chance for FIRE when stringing
- check the gas/steam emission when cutting
  - if to much gas/steam, adjust the settings (less power or more speed)
- know where the fire extinguisher is
- never leave laser while lasering and check from time to time/no headphones

## No Go Materials

**Don't use following materials:**

|Material|DANGER!!|
|--------|------|
| **PVC (Poly Vinyl Chlorid)/vinyl/pleather/artifical leather**| Emits chlorine gas when cut <br><br> ruin optics and corodes metal!|
| **Thick (>1mm) Polycarbonate/Lexan**| Cuts very poorly, discolors, CATCHES FIRE!!! <br><br> long stringy clouds on cutting -> will ruin optics and mechanics|
|**ABS (Acrylonitrile butadiene styrene)**| Melts instead of vaporize / Hydrogen Cyanide Gas on cutting -> UNSAFE|
|**HDPE/ milk bottle plastic**| Catches fire and melts|
|**PolyStyrene/PolyPropylene Foam**| CATCHES FIRE VERY EASILY!|
|**Epoxy**| can't cut -> burns/ smokes Cyanide!!|
|**Fiberglass**| Emits fumes (glass can only be etched and epoxy only smokes)|
|**Coated Carbon Fiber**| emits noxious fumes!! (carbon fiber can be cut, but not when coated)|
|**Any Food**| Not food-safe -> many toxic gases where in the laser for a longer time|
|**Material With Sticky Glue Backing**| Coats/ cracks lens when CUT; also hard to remove from the lens!|