Laser Room/Precautions

Safety

Hazards: fumes, fire, noise, lacerations.
Wear hearing protection when the exhaust fan is on, as it's loud enough to cause hearing damage.
Check the debris tray before and after. Debris buildup can cause a fire as the laser cuts through the workpiece and enters the debris tray.
Do not cut unknown or unapproved materials. If the material is not on the approved list, ask for permission on Slack.
Heat can build up when doing multiple passes on wood, causing the material to ignite. If you're cutting thick wood and it doesn't go through in three passes, stop.
Always use a vector grid when cutting all the way through.
Don't wear loose hair, clothing, jewellery, etc. as they can become entangled in the belts.

for all	Safety The manuals for our lasers all say that should not be run without supervision. One actually spells out the reason: "There is a significant risk of fire ... if the machine should experience a mechanical or electrical failure while operating." Should we update or clarify our rules so unattended laser cutting is not allowed? There seems to be some ambiguity there for now. Ttenbergen (talk) 00:05, 2024 August 19 (CDT)

Never circumvent the interlocked enclosures on our laser cutters
Our laser cutters all contain lasers that would be considered Class 4 and subject to significant training and restrictions.
The laser cutters implement an interlocked safety enclosure that shuts off the laser if the enclosure is opened. This reclassifies the machines to a Class 1 laser for the purpose of the actual cutting laser that is interlocked.
However, the laser cutters end up being Class 2 laser because of the red dot pointer laser that can operate even with the lid open.

When using Big Blue, Little Blue, and Big Red: Clean the lens before the start of your session. Monitor the lens throughout - cutting messy materials like rubber may require recleaning. Note that Big Red has one extra mirror that needs to be cleaned in addition to the one in the head.
When using Giant Blue, check the lens frequently for debris buildup and clean as required.
Always use a lens tissue when cleaning the lens - bare Q-tips are mildly abrasive and wear away at the coatings on the lens
Break down waste before bagging (pieces should be smaller than 6" x 6"). Blunt any sharp edges so they don't break the bag.

for all	that is a bigger garbage issue... see Todo