I honestly have NO IDEA!!! Couldnt sleep the other night, so i went downstairs and worked on her - 3 hrs later at 3am i surfaced - honestly thought id been there for an hour tops - At a guess, id say 20 hours so far, but there are bits of it that i havent been happy with and so ive wiped it clean and started again - i want this PF to be IMMACULATE when ive finished