Howdy,
I always see quilting on fondant, but can it be done on buttercream too?
Also, if you are cutting the diamonds out for a harlequin cake, is there a trick to making sure you don't end up with an off column, too big or too small?
Thank you guys, your expertise never ceases to amaze me. 
Christy
yes quilting can be done on buttercream.
when doing the harlequin, measure the circumference of the cake and divide it by the size of diamond you want then you may need to adjust the size of the diamonds to get it to fit equally around. do the same for the height of the cake also.
And always switch off your pattern. Do one row, do a row next to it, and jump to theother side of the first one you did, then back and forth like that.
You can definitely quilt a bc cake here is one of my pics.I have another pink box cake that might show better.
http://cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1820981
as for the harlequin i sometimes have the first and the last column off. I call this the back of the cake 
. nobody has said anything yet
hth
Thank you guys. Again, your generous response astound me. I'm so glad that I found this website.
Quote by @%username% on %date%
%body%