Hello!
So I decided to build my first laser (and yeah, I made that first mistake I choosed high power...)
I bought PLTB 450 diode ->
Brand New OSRAM 450nm 1.4W Blue Laser Diode/TO18 Package/PLTB450| eBay
Heatsink ->
1845 House Glass Lens TO18 5.6mm 405nm 445nm 450nm 473nm Blue/Violet Laser...