I made a blend of circles that distribute from big to small and chose the replace with spine command. I have noticed the circles are not evenly spaced in the spine. I have changed adding anchor points but did not work. Is there a way to distribute evenly along a spiral path?
No, it's not possible using a blend since the blend will create equally distributed objects, which with varying sized objects means uneven spacing. What you can do is set up your blend, manually align the shapes yourself then create an art brush to create the spiral.
- Create you blend the way you would like it. (it may be useful to try it on the spiral first, either on a duplicate or then undo back to the regular straight spine).
Expand the blend (Object → Blend → Expand) so that you have a group of distinct objects.
Select all the circles and use the "Horizontal Distribute Spacing" option in the Align panel to get the equal spacing you want.
Drag your now equally spaced circles to the Brushes panel.
Select "Art Brush" and change scaling options to "Scale Proportionally" to prevent your circles being deformed too much.
- Apply your new art brush to the spiral: