My friend is making some wedding sheet cakes.
She's baking 16" square, and can Not find where to buy 18" or larger square cake base / boards. I told her I would ask on here, there's an answer for everything
Does anyone have any suggestions?
Thank-you

I'd go to Lowe's or Home Depot and have a piece of plywood cut. Then you can cover it with contact paper.

Yep, or you can also buy mesonite and they will cut it to fit, whatever size you want. Then cover with paper and then the contact paper. OR you can use foamboard (walmart is cheap) and cut it the size you want, just make sure you do 2 or 3 together, since it is a big cake it will be very heavy. HTH

Yep, walmart is great for the foamboard.....

For my bigger cakes I bought a sheet of MDF from Home Depot, it was cheap, less than 6$ and they cut it for me, I got 2 boards out of one sheet.

I'd also go with a giant piece of wood. It'll be much stronger and support that cake better. The bigger the cake, the more they weigh!!

(she can ask the customer or whomever to return the boards)