I know these have been discussed in the past, but wanted to show the quick and cheap alternative that is working great for me. I took a piece of 1/8" stainless tubing ( doesn't have to be stainless....it's just what I had laying around) and ground a slot in the end of it with the Dremel and a cutoff wheel. It is then chucked up in a hand drill for use. Best to have a drill with variable speed and forward/reverse capabilities for obvious reasons. It only took about 30 seconds to make and it works like a charm.
They say a picture is worth a thousand words so there's one attached below.
Ben