So this weekend I'll be making a 4 tiered square buttercream cake that has tapered tiers. The tier sizes are 12,10,8, 6. The 12 will be tapered to a 10, the 10 will be tapered to an 8, the 8 will be tapered to a 6 and the 6 will be tapered to a 4. My question lies in the best support system. Since the tiers are offset, can I use SPS? It seems like the legs might be too close to the edge of the cake and I don't want to displace too much cake and cause it to blow out, crack or anything of that nature. Here is a picture of the cake the bride wants and it will basically be the same but with Daisey's instead of Calla Lillies. Any help is appreciated!
If you use SPS, and completely offset diagonally (the photo shows twisted -- almost offset), the internal pillars wouldn't pierce through the tapered bottoms of each lower tier. I don't think you can get a 4" SPS plate, but if you could...
the 4" plate's pillars would be 1 1/2" away from the 6" base tier below,
the 6" plate's pillars would be 1 1/4" away from the 8" base tier below, and
the 8" plate's pillars would be 3/4" away from the 10" base tier below.
I don't think you can get a 4" SPS either, so I was just going to use bubble straws for that one. But I was concerned about the other 2 larger layers. Thank you for your response though! This cake has been keeping me up at night all week!