Hello!!
Everytime I do a crumb coat, the edges tear away from the cake and sometimes the frosting does not stick very well. I do not know if it is my frosting consistancy or what. The recipes I use for the cakes seem to fall apart as well, I thought pound cake was a good cake to use for decorating. What is a good kind of cake? And How do I do the crumb coat right?
Thanx!
go on you tube and type in crumb coating cakes and also go to the members list and type in xstitcher and I am sure if you pm her she would be glad to help you, she helped me so much. good luck, I am to new but I can try to lead you in the right direction
Hi and Welcome to CC, aluvs2bake. 
Decoding CC acronyms:
http://cakecentral.com/cake-decorating-ftopict-2926-.html
Everything you need to know to make, decorate and assemble tiered/stacked/layer cakes:
http://cakecentral.com/cake-decorating-ftopict-605188-.html
Above superthread has popular CC recipes for crusting American buttercreams, several types of fondant and doctored cake mix (WASC and other flavor variations) - and so much more!
As to your original question:
Most people crumb coat in order to seal in the crumbs on a freshly baked cake so that the crumbs don't appear on the finished iced surface.
I always crumb coat out of habit.
I lightly ice the cake with buttercream to the point where I can still see the color of the cake. I let it sit or refrigerate it at this point (because the crumb coat acts like a layer of saran wrap).
My icing only lightly crusts, but this just means that when you touch it, no icing comes up on your finger. When I go to put on the finish coat of icing, I get no cake crumbs on the surface this way. Another benefit can be that, especially in hot weather, the finished coat of icing is less likely to slide off of the cake sides.
HTH
Rae
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