Looks really great Joe. Knowing how wide the tube is, and how wide the finished pen is, you can now plan your blanks. You can mark the center of the blank on 2 sides and then mark back half the width of the tube on either side of center, basically marking the width of the tube right down the middle. Any squiggles you make inside those lines will remain inside the pen. By doing that on the face, and then a side, you'll have lines on 4 sides. If you scroll outside the lines a little ways, you put a curve line on the outside of the blank, similar to what happens if you splice a thin piece into a blank on an angle. It won't take long and you can totally visualize the end result. A $10 scrollsaw is plenty good for nearly any type of pen scrolling.