I am stacking a five tier cake covered with SMBC. Do you use the cardboard circles without covering them with anything? My fear is that the SMBC might make the board circles soft and the cake may collapse. Will it be OK if I just double up on the cake boards? Many thanks for any advice!

You're also using dowels or SPS, right?

It won't make your cakeboards soft. I only use SMBC or IMBC & I have done wedding cakes covered in fondant w. IMBC with no problems.

I always use either SMBC or IMBC and no matter what kind of cake I do I always use cardboard circles that are already covered. The biggest cake circle for the base I use 1/2" thickness , for the cakes that are to be stacked I use just one 1/4" thick circle.

thanks for your help!

Leah, I am using dowels...too late to order the SPS.

The cakes will not be covered in fondant just SMBC. Will the cake circles hold? Cake circles will be absorbing the SMBC from the bottom tiers. They are approx. 1/8" thick. Should I double up on the circles and not cover them with aluminum foil or something else ?(afraid a piece might end up in the cake when cut)