I've tried searching CC for this, but couldn't find it.
Does anyone cut their hexagon shaped cakes from square cakes that they have baked? Is it hard? Does it cause problems with crumbling, etc...? What's the ratio for the cuts so that the sides are all the same length? Any other tips?
I would do a template and lay it on the cake and cut it from there. You can do a hexagon from a round cake as well. http://en.wikipedia.org/wiki/Hexagon#Regular_hexagon They show a formula for doing it from a circle.
I've done it. It's a pain in the ass. It's hard to get it all even. For the time and aggravation, I'd seriously just buy hex pans.
I totally agree with FromScratch! I did it once and I won't do it again. I will buy the pans the next time. Getting the ratio right - layer to layer - is the most major obstacle. Plus the cut edges of cake are just too hard to have to ice and keep clean.
Buy the pans - the aggravation is just not worth it!