How do I foil and make the cake boards thick ? Not like the ones that is taught at the wilton class. I am looking for the nice thick ones.
At a cake supply store or online, you can get cake boards that are about 1/2in thick and pre-covered in white, gold or silver.
If you want to make your own thicker board, you can stack 2 or 3 regular cake boards. Crisscross the pattern of the corrugated cardboard. Tape or glue them together. You can also use foam core from the craft store. Once it as thick as you want, cover it with foil from the cake supply or craft store.
I've bought a few masonite cake boards (1/2 inch thick) from GlobalSugar art... I did that before I realized I could go to my local home depot and have them cut me the same thing!
I like the thicker boards as it creates a sturdier base for my cakes and also allows for a nice ribbon trim to be glued on.
I've also hot glued 3 cake boards together (that I bought at my local party store) to give me the width/thickness that I needed.
Perhaps you're looking for cake drums. Just google it and many suppliers will appear.
Pre-covered cake drums can be pricey, so for squares you might consider 1/2 inch foam core covered in foil. HTH
Here is a REALLY useful video on how to cut and cover a cake board with foil!