I am making a Texas Sheet Cake (2 - 12x18 Cakes) So that make the cake all together 24x36....This is to feed over 100 people... 
Has anyone made something this big??? What cake board did you use, I don't have anything big enough.... Please Help, I need advice 
Thanks
Soula
I had this same type of request & did this cake:
http://www.cakecentral.com/cake-photo_1190329.html
My hubby went to Lowe's and got plywood and cut it to the size I wanted. Since it was wood, I covered it in contact paper first and then fanci foil. It worked like a charm!! To transport, I bought one of those "under the bed" plastic storage containers from walmart and it fit in there perfect.
The only difference is for 100 people I used two 14" square pans. My hubby made my board to be 18" x 32". I made mine going off of wilton charts that say one 14" square pan feeds 63 people. So since you are wanting to feed more people, I don't know if my info will help all that much but thought I would post in case it might!! 
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