In this video I restored a German axe from "Helko Werk". I already restored an axe a year ago and I wasn't going to make another video about restoring another axe but the incredible work of a friend ...
Normally, you have a choice with PCB prototypes: fast or cheap. [Stephen Hawes] has been trying fiber lasers to create PCBs. He’s learned a lot which he shares in the video below. Very good ...
They were then stained with hematoxylin for 3 min, differentiated using hydrochloric acid in ethanol for 10 s, briefly rinsed, and subjected to a bluing solution for 15 s. After a final wash with ...