I wouldn't do it even for a very good friend. "Good" friends don't take advantage that way. You, as the quilter, have a right to say you won't do the quilt without compensation, and look up the charges for longarming. Most longarmers would charge for clipping the threads, etc. I know one that charges for 1 needle per quilt, and if a lot of detail and large quilt she'll charge for 2 or 3!!!! Don't let this happen...YOU'LL never be happy.