Setting up bleed/margin for printing
I have to create a 400 page book with the measurements height:
16cm by 24cm in Adobe InDesign. It is intended for publishing, but what are the bleed and margin measurements I need to follow so that it can be printed correctly?
Bleeds should be a minimum of .125 inches, 9 points, or 3.2mm.
Margins or "safe area" are often set .25 inches, 1p6 picas, or 6.5mm inside the trim.
These are general measurements which I've found will work for 99.9% of the print providers I come across. However, as Bakabaka posted in the comments, each printer can have a different set of preferred measurements. You should ask for general specifications from your printer if that's possible.
For example, some publishers want single pages with no inside bleed/trim. So the bleeds are not the same on all 4 sides of the piece.