first you have to download the gravgun 1.2 from this link
http://solarmods.googlepages.com/home2223then you have to download the gravity gun form
http://returntoblockland.com/forums/download.php?cmd=viewFile&id=108then go to the grav gun 1.2 folder you wel see add ons folder open it go to shapes
open the 2nd folder you wel see the files copy every thing ,only the thumbs file
you dont need the thumbs file , after you copy paste it any whear you whant
and rename it to "printGun" then copy it agen, then go to :
C:\Program Files\Blockland\base\data\shapes
paste it thare
now run blockland , start a game , get the printer you see that the skin is gravity gun skin
and go to the gravity gun you see the skin