........I love the single plate stacking system by Bakers Craft and I was assuming I could just cut the pillars 3 inches taller than each tier and put the roses in the gap. Is this too simple a solution? I admit I'm confused when I hear two plates (sps)...in fact I have never understood exactly which "plates" you mean.............
No it is not too simple a solution. It is a wise choice
Plates: plastic plates that a cake sits on. They have 'feet' on them that fit into openings in the pillars.
2 plate system uses one plate on the top of a cake tier w/the 'feet' up; the pillars fit on those 'feet', then another plate fits on the top of those pillars and the next cake tier sits on that.
.............In my early days I used to cut 4 wooden dowels to the height of the bottom layer of cake and put the second cake/ cake cardboard round on top of that . Wasn't that essentially a single plate system?...........
No what you are describing here is supports for stacked cakes.
Here are examples of the 2 plate system in use: