This is my first time doing a 3-tiered cake (10,8,6). Usually for a 2-tiered cake, I use single cardboard cake circles for each layer. Do I need to double the circles for a 3-tiered to support the weight? And can I still use plastic straws for support?

I only use one cakeboard in between the cake tier...but for the base I use a cakeboard that is equilivant to 3 or 4 cake boards. I would think that you would need more support than plastic straws. I would use wooden dowel rods. That's what I always use for a 3-tier cake.

I would put 5 dowel rods in the 10 inch. I would put 4 dowel rods in the 8 inch cake and none in the 6 inch, except for the tall dowel rod that goes thru all three tiers (including the cake boards).

Hope this helps..

I'd use SPS.

Oh, come on, you all knew I'd say that.