I need some help with the cakes with wheels and or legs that have some space under them. Like a skate board or toy truck etc..... I know it involves foam core board but I just don't see how to get the lift and support to keep it all together.

Anyone have a tutorial? Maybe youtube?

When I did my firetruck cake, I bought styrofoam (1" thick I think) and cut it about an inch (on each side) smaller than the board the truck was sitting on. I used royal icing to glue the styrofoam to the base board and then more royal to glue the cake board to the styrofoam. I made sure the royal had at least overnight and all the next day to dry before driving with it.

I hope that helps!!! Good luck with your cake!

tah-dip!

a diagram for you

can do central block as already suggested (on right in diagram)

or do little dowels hidden by the wheels (on left)

Is foam core strong enough to hold up most cakes?
If I was doing a skate board would I just run a support from front to back? If I use dowels how are they anchored?
Thanks,

1/2 in foam core (either single sheet or two 1/4 in sheets GLUED together is more than strong enough)

run solid support lengthwise like on right side of diagram.

to anchor dowels -- screw and glue w/ wood or just glue (hot melt) on foamcore