What cake boards do you use for full size cakes? I haven't made a full size cake but was thinking if I combine 2 of my 11X15 that would make a full size? Then I started thinking I've never seen cake boards that big. Any ideas and can you combine 2 of the cakes to make a full size. I would be afraid to move it!

they make full sheet boards. If you have a Michael's or a Hobby Lobby check there first. A lot of times you can go to the bakery of your local grocery store and buy a full sheet board and box. A full sheet board would be about 24x18

When you get them from the store bakery, are they free or how much are they?

If you could make sure you could get it back, you could cut one out of thin plywood or MDF. I have one that's for a 1/2 sheet and love it!!

It varies. I would say the average of about $3-$5 depending on where you live, some places may be cheaper.

I make my own cake boards after realizing how much money I spent on them. I'm lucky enough to have access to large cardboard boxes and just trace the cake pan upside down then cut it with a sharp edge knife. If I need it to be sturdy for a heavy cake, I just combine several of them glued together, then cover with contact paper.

Just be careful when you buy the boards from the bakery that they are the same size as your cake pan. I remember reading a post that the sizes the bakery uses (industry standard) are different that the ones used by "hobby" bakers. Just a thought and best of luck.