Laser power modules

https://www.laserdmk.com/130w-260w-laser-pump-source-for-max-fiber-laser-source

https://www.youtube.com/watch?v=mNP-5Oo2aTo.    Skill Make ( subscribed)

pretty cheap on Ebay $9.9

https://www.ebay.com/itm/196993012203?msockid=18a28adebd28608a13779c00bce5611e

laser on 3D printer

https://www.youtube.com/watch?v=dG639pDfDKw.   product not in great details