You wrote I can ask any question , because this forum is ... to ask them. I was searching my problem in this forum but did not find the answer (maybe its my fault).
I have a book 8,5"x11"; I want to change the dimensions to 210x297mm with bleed 3mm, and my printer house says that my netto should be 205x285 (I know - it's its ridiculous)
So I am fighting with my printer house, but still have some problems here...
From the start: i have put 204mmx 291mm - with added bleed 3mm (to get 210x297mm) - but the final result was much, much bigger. So, i was trying many times to get the brutto.
And there is my question: WHY I need to subtract 15,5 mmx15,5 mm to get the right size - 210mmx297mm???