I was wondering, I have a cake due next saturday for a church picnic. My plan is to make an 1x15 sheet cake decorated of course, but what I would like to do is make cutting lines on it .. so everyone kind of knows where to take their piece from .. is there a particular way people do this? I just want to score lines through it I guesss .. what is an average size square you would mark? Then would you mark first, then decorate? Any help is appreciated .. thank you so much 
The wedding shower cake with bells and hearts in my gallery was one I did. I used dental floss to cut through the cake (make sure it's plain). I did 2 inch squares. Then I piped the border over the cuts. I told them it was precut when they picked it up. They really liked that and said it was so easy to serve.
If it's a 2in deep sheet cake then a 2x2in square piece is OK. If you are going to mark it into squares, I'd do it after decorating or you won't be able to see the cut marks anyway! Kinda negates the point of making a pretty cake though 
, unless you incorporate those marks into the design by marking out the cake in a grid and decorating each little square - there are some Easter cakes I remeber that were done like that, I'm sure they must be in the gallery, I'll see if I can find one!
I always smooth out my icing then figure out how many squares I need then I use a knife to mark where I need to score in the edge of the cake I eyeball the score across the top. I never drag the knife, just slightly press it into the icing. I get a light indentation and it doesant distract from the design. I usually put a design in each square so no one will get left out of the design.
Good luck!!!!
First you make your pre-marks. The usual slice size is 2x2 or you could do bigger if you like. You can do your marks just at the edge if your good with doing straight lines or mark all the way across if you need something to follow. You need both vertical and horizontal lines. Then you make very small border lines going in both directions. You can use a star tip or writing tip, make shells or zigzags or reverse shells. And last you decorate the squares with rose buds, balloons, drop flowers or etc.
Here you go, this one is by kortega:
http://www.cakecentral.com/cake-decorating-photos_display_22_-36059.html
thank you for the replies everyone ... dental floss is a great idea!
thank you for the replies everyone ... dental floss is a great idea!
Yes, a fellow baker at church told me about it. It's really a clean cut. Hold it tight across the cake, then go straight down, then pull it out one side at the bottom - no crumbs! I did measure my 2" and make tiny marks along the edge with a toothpick.
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