What type of cake are they using on food cake challenge or ace of cakes or extreme cakes? I watch these shows an the cake seems firm and is not crumbling. I try an cut my cakes at home just to get the tops of them off an I have crumbs galore.
Maybe they are using more firm cakes, like a pound cake...I saw one once and when they had the tasting I remember one saying it was a pound cake.... SOrry I can't be of more help.
Pound cake, I would bet my life on it. And I would also imagine they are pretty cold, if not nearly frozen, that helps to lessen crumbs when carving.
could be maderia, its very firm.
i have read though that they dr the cakes to be more firm, and so not quite as appetising to eat. its a trade off on what you want i guess!
What might be causing your problem is not the cake as much as the knife you
are using. It might not be sharp.