I made a cake yesterday and did that rope border for the first time, I used the buttercream recipe with half shortening and half butter. I haven't done a lot of cakes but I have to say this is a first, to happen. I put the border on 4 times. Can someone tell me what I might have done wrong, I am at the point of quiting all together. Right now I don't ever want to do another cake. Please Help!!! 
Thank you in advance for any and all help.... Ya'll are Great!!!!!!!!!!!!!!!!!!! 
Yes, where did you pipe the border, and what tip did you use? If you used tip 21 as the Wilton book instructs, the icing is just too heavy to sit perched on the outermost edge of the cake as it is a huge border (assuming some of your border was hanging off or over the top edge of the cake). I always use a tip 16 or 18 for rope borders.
Piping a rope border also takes quite a bit of time, so in the future, you may be better off using a crisco-only based buttercream rather than one containing butter. If you do use butter, work with very small amounts (yes, lots of reloading the bag) and work quickly! 
I did it on the outer edge of the cake with some of it over the edge.
Cakepro, I had thought that maybe the icing was to heavy. Next time, if there is a next time, I'll try the smaller tip and using only shortening. Thank you all so very much. I love this site, I could sit here all day and read all the good information and fun that is on here. I hope ya'll have a wonderful day 
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