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Gentlemen,

I´m a hobbyst and I´ve heard about fiber lases.
There are modules on sale on eBay, some are big and rated at 40W optical power.
Most of them have a fiber connector.

But how do I...

Hello, everybody.

My name is Amir, I live in Brazil and I´m an electronic engineer.

I intend to build my laser cutter/engraver, hope to get some knowledge here.

My intention is to build PCB...