I am so sorry to post this again, but I am really desperate. Puleeeze help. I have been using logicpic cake drums and since they are down, I am in desperate need to find something very similar. I noticed someone said they use 3/16 and 1/2 inch foam board and I am hoping it is the same as logicpic but I can't find where to get it. Thanks much.
Foam core is purchased at most any local art supplies or craft stores. It's in the picture framing department and you must then cut it to the size you need.
If you're talking about cake drums - which are what goes under the bottom tier of the cake (the cake board) then those can be purchased from many online suppliers and many cake supplies shops.