The act of extreme nerdy activities; A.K.A., being a nerd openly/seriously. Some may do it unintentionally, but ones said to be nerdcrafting are usually aware of their own nerdcrafting.
"I'm going to google 500 LOTR
pictures and photoshop my face into every character." -Nerd
"That is some serious nerdcrafting." -Nerd's Buddy