This is my second able about making pcb drill , sander , dremel...etc , after my Frist one .
The best thing is it can drill and sand the pcb so fast .
I think he did said PCB...it means Printed Circuited Board....the dark brown board which he used to demonstrate the tool..
I give you an idea: if you put English captions to the video, those like me who can read English but don't understand when listen it, we would understand much better what you say. You can earn thousands of spectators, we are many millions around the world.
Even an abstract, one or two words in the main moments, could help us.