Want to help my LAB:   / eslam_eldeknawy  
Thank you so much!

Buy electronic components with cheaper and free shipping  https://www.utsource.net/




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before making any thing PLEASE Read Chemical warnings about
FeCl3 and Hydrogen Peroxide carefully

you can learn more about the machine that appear in the video
from this link : http://www.instructables.com/id/PCBL...

if you have any question don't histate to leave a comment