Faza,
Ask El-timbo what putty/filler he uses. Hes the man when it comes to excellent cabinet jobs.
I have only seen people use spray bog, in a can from super cheap auto and its grey in colour. but i reckon Tim will have a better product.
p.s - what are u going to do with the inside of the cabinet.? see what tim does with his. it gives the BEST results and looks so much better than a unfinished look. 
Brett
Funny i went over Tims funhouse restoration about an hour ago seems like he uses plastibond for everything will head to bunnings in the morning
As for the inside of the cabinet i will wait and see how it cleans up, may have to purchase some of Ninos famous nifti give it a clean and sand and then decide whether to paint or clear.
