I bought a portable pulsed laser cleaning machine in used condition. It works well for cleaning small intricate shapes and it's super portable! I plan on using it to prep steel for a pipe fence, a welding table and a greenhouse I'm building. Follow along with my journey and see how it works long term. Amazon link to machine: https://amzn.to/3vfB9Bb Enter the following code to get 5% off price through the above Amazon link: TAXAJCRM. #ad (NOTICE: As an Amazon Associate I earn on qualifying purchases) Laser machine link on Shopify: (I earn a small percentage commission for sales through this link): https://zaclaser.com/KIT-652 At checkout be sure to click "discount code" and then type: "KIT-652" into the text field (no quotes). CONCERNING THE SMOKE DESTROYING THE LENS: This machine comes with a little bendable straw that is designed to blow smoke away from the lens. I didn't include it in the video because it obstructed the view of the workpiece and the straw requires an air compressor to generate the air flow. The noise of the compressor and the view being ruined made me think that a quality video was worth sacrificing a lens. By the end of this video there was indeed a foggy spot on my lens due to cleaning the greasy cookie sheet. The sheet spattered some grease onto the lens and the spatter absorbed enough heat to etch the glass a bit. I should have mentioned the straw in the video but I was so excited to get this out there I simply forgot to. If you buy a unit like this use the straw to prolong the lens life. Be safe!!!! Interesting pulse laser lectures: https://www.youtube.com/watch?v=or4T01PaMXE Join this channel to get access to perks: null