AI have read through all the threads on topsy turvies, and I think I have confused myself. I am planning a 3 tier for this weekend, for my sons 1st birthday (so not a paying customer). I am not to concerned about serving numbers, I already know there will way too much cake but I am more interested in adding it to my portfolio. I plan to start with 6, 8 and 10 inch round cakes. from there I am going to carve the tops (they will be 4" tall to start with and I will flip the top). I think I will also hollow out the top for the next tier to sit in. my real question comes from the sides. I plan to carve these to taper in, but I am unsure of how far. if the top tier has a top diameter of 6" is a base diameter of 5" enough of a slope for the tapering? that will also give me difference of 3" between the base of the top tier and top of the middle tier. I believe from reading through all the posts that a 3" difference is recommended? I thought maybe 6" down to 4" but then I was worried it might be too unstable (I plan to give him the top tier as his smash cake). hope you guys can help me clear up my confusion :)
On the topsy turvy that I made, I carved a 2" difference top to bottom. With a 6" cake you only carve an inch and half difference to maintain the stability of the cake.
To maintain the correct dimensions use a two inch smaller cake board for the bottom and use them as guides. Such as for an 8" diameter cake use an 8" cake board on top and a 6" cake board centered on the bottom. Carve the difference away with the bottom board up then turn over when you are finished carving. It will make the carving much easier.