Hi Friends

This is my third macro
Blend linear curve ...

input:
-curve-1
-curve-2
-factor for Blend C1
-factor for Bend C2
-start point on first curve
-start point on second curve
-bulge blend first curve
-bulge blend secon curve
-choise C1 or C2

output:
-blend Curve
-joint Curve

I think I'm a flexible enough tool to help
in classic planar drawing
Later they tried to create Blend Curve 3d macro
surely it is much more complicated to do so
to this link the files:
http://www.mediafire.com/file/d29l84ugddrvykz/M-Blend_Curve.rar
Good in-depth
Have a nice Weekend to all
alberto