12 Volt Charger/ 12 Volt DC Power Suply

I've made this 12 volt DC suply for testing stuf that I made.
I used 220 V to 12 V transormer and simple Graco's compound.
If you are not expert dont try this at home the 220 volt is more than enough to kill someone.
For base I used old PC power suply I dril holes for switch, and LED.
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You will need:
-Power transormer (220V to 12V)
-4 diods 
-Switch 
-Led
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Tools
-screwdriver
-pliers
-wire stripper
-soldering tool
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