Keeping your mirrors clean and aligned is very important for good laser etching and cutting. Here are some videos on the subject and I will include links down below where you can purchase supplies.

Please note: I am an eBay partner and Clicking on some images will take you to eBay where you can purchase the item shown.

lens cleaner wipesLens wipes for cleaning mirrors and lens.

Replacement mirrors

GaAs lens.

ZnSe lens

Inspection Mirror

Snap ring pliers

Valve Lap Tool, Used to lift/hold mirrors from the back