====== Laser Cutter induction notes ======
 
These are the induction notes for the Laser Cutter. Ask the members after each section if they have understood and if they have any questions so far.
 
===== Health and Safety =====

Explain the hazards to anyone nearby and the mitigations:

  * Class 4 laser. Safety interlock in lid that must not be bypassed.
  * Risk of fire.
    * Do not leave the laser cutter unattended.
    * Point out location of fire extinguisher.
    * Emergency stop on the laser cutter.
  * Hazardous fumes. Let the extractor work for at least 10 seconds before opening the door.
 
Explain the hazards to the equipment itself:

  * Only cut approved materials. Especially don't cut PVC, or other chlorinated materials. Incorrect materials may damage the lenses and/or the laser tube. 
 
===== Before use checklists =====
 
Show which parts of the equipment should be checked before use:

  * Check the extractor is working
  * Check the chiller is on and below 21C
 
===== Operation of the equipment =====
 
Operation of the equipment is done in 2 stages detailed in the sections below. 
 
==== Using the Lasercut software ====

Demonstrate the process of using the PC software.

  - Switch on computer & Log in with password from your induction.
  - Open LASERCUT53 (from taskbar) and enter password again.
  - Import your DXF File (File > Import) & Check dimensionality using the 'size' button (10th down on left toolbar).
  - Set your power and speed settings using the 'layer' pane in the top-right.
  - Unite the lines (Tools > Unite Lines).
  - Set the 'knife origin' position relative to your drawing (5th button from right on top toolbar), then switch back to normal 'pick' mode (6th button from left on top toolbar).

==== Using the laser cutter ====
 
Demonstrate the usage of the laser cutter. Pick a random member to go through the process too.

  - Turn on isolator on the wall to power up the laser. Check chiller and extractor start up, and that the laser datums (moves to the back right corner).
  - Put your material in the laser bed.
  - Download file to laser ('Download' button in bottom right, then 'Del all', then 'Download current').
  - On laser controller move head to desired origin position (press 'ESC', use arrow keys, then press return key).
  - Lock in origin (press return key to bring up "set logic org", then press return again).
  - Set your bed heights (press 'Z', then use arrow keys, then press 'Z' again).
  - Check cut bounding box (press 'test').
  - Press 'start' to make your cut.
  - After the cut, WAIT at least 10 seconds for the smoke to clear before opening the lid or powering down.
 
===== Shutdown and tidy up =====
 
Demonstrate the steps required to put the equipment back into a standard, safe, and tidy configuration:

  * Remove and take home any laser skeletons.
  * Clean up and bin any small pieces.
  * Power down the laser by turning the isolator on the wall.
 
===== Closing points =====

Various information available on the Wiki:

  * Recommended software and how to export.
  * Allowed material list.
  * How to use the Lasercut software.