umm adding thinner does alot,IT THINS IT!!! and as for having to go through a dryer it depends what kind of ink your using if your using U.V. it must go througha dryer with ultra violet lites,but as far as the ink i have its for printing vinyl stickers and air dries and is passed trough a dryer just to speed the process,as to go to cutting faster to ship out faster,and as far as putting it a marker works great for me lots of drips and its super opaque,and please dont call me kid because i am not..hense knowing all of this,is because its my job! im not saying any of this to be a dick,just mabey a simple correction?(for lack of better words)