Hello, I am going to bake 4, 8 inch round cakes stacking one on top of the other, I will be doing this 3-4 days in advance, covering with fondant..wondering if I should put a cake board and dowels in the middle so it will not sink down or cause they are the same size does it matter?

Thank you in advance!!!

Most people say put a board in for every 2 or 3 inches of height. Even if the cakes are the same size, without support they could still weigh on each other over those days and cause some bulging at the sides, messing up your fondant. Think of the dowels and board as holding up the weight of the top cakes, protecting the lower ones from being squashed. HTH :) 

Thank you!! ...makes sense 

A 4" high layer cake doesn't require supports -- over 4" does.

AAny cake tier I bake over 4" tall I put insert supports (bubble tea straws) and put each tier on its own cake board.

thank you for the info....so you use straws.. a cake instructor kind of laughed at me when I used them in a cake class, good to know I would rather use straws then dowels.

AFour days prior to the event?

trying for 3 days but I have 4 cakes to do that week. I've was told that keeping it in the fridge and being covered in fondant a cake will keep and stay moist up to a week if not longer...