Ok let me simplify this further for those of you who still do not understand wat yuri is saying.
Lets say you are adding an element to a weap and your success rate is 20%, type /random and a number will pop out. If the number is smaller or equals to 20, your crafting will be successful. This applies to all kinds of craft, eg. items, grinding, dying.
I've personally tried this out some time ago and I have to say it works 9 out of 10 times.
However, I do not get the blue bars %. Maybe Yuri can enlighten us on it further.
ok this is wrong ... or i am reading it wrong.... /random does nothing for crafts it was only mentioned as to show you where the numbers come from.
the concept is correct though
and blue bars are a low % I do not know what they are but you can guess 1-8% at most
Elemental blue bars are lower then temper Blue bars