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> F'N magic - awesome way to remove rust, Only about 100K
Mikey914
post Mar 9 2016, 12:32 AM
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Looking for a way to clean some of the steel mold other than soda blasting found something really cool


https://www.facebook.com/therpf/videos/10153929475067243/
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jd74914
post Mar 9 2016, 01:00 AM
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Its a pretty cool video. Watching it and doing a little research, I'm surprised it's not more popular. Laser ablation works really well (a high intensity beam pretty readily removes just about anything) and is quite simple. I know some people who use it for cleaning CMAS from thermal barrier coatings.

The guy writing in the comments section on Facebook about it's working is probably correct. Their website says it's a diode pumped SS laser so it likely is a Nd-YAG. It would probably actually be pretty simple to build one of these; you might even be able to use one of those cheap Chinese diode lasers off eBay and a plane-convex lense or plane-convex/spherical lense pair from Thorlabs. You just have to be careful with any reflected radiation and wear the correct glasses. Based on the color of scatter off the metal I'm guessing this laser is operating at 355nm which is invisible but can really mess you up. Conveniently, regular Plexiglas safety glasses work pretty well.

I want to try it with my big Nd-YAG lasers at work now. (IMG:style_emoticons/default/laugh.gif)
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