Ok, guys! You told me to make a pen without the center ring. Here it is! I think I should have rounded the ends a little. Didn't realize that until I had finished the pen.
I agree. It looks really good. You can do all kinds of things with a slimline. I like to make them look similar to Euros. Back in February there was a contest for the birthday bash for modified slimlines. I don't know why we can't go back & look at the posts from the bash.
Here's a library article showing modifications by Don Ward.
http://content.penturners.org/library/pens/slimline_modifications.pdf