Loft Error With Rails "Net curves intersections are not monotonic"

[BaioS6N7CA]

Hi All,

Trying to make a model with an organic shape using the rails for the Loft, and getting an odd error I haven't found anything on in tutorials/forums. When I use the rails on the X axis (The curvy ones pictured below), each works fine individually but when combined I get the "Net curves intersections are not monotonic". To my knowledge they are intersecting the profiles fine which is the only error I've had in the past, so am kind of stuck. 

On the Y axis the rails give me another error ive never seen, but it might be because the loft is already within those rails so they have nothing to restrain, but thought I would mention that as well. Other than that, would love to hear what you guys think I can do!

[hamid.sh. · Accepted solution]

I did it with two lofts:

[BaioS6N7CA]

Thanks! You guys are wizards, what takes me 20 hours of banging my head on a desk you solve in 20 minutes, appreciate the help!

[g-andresen · Accepted solution]

Hi,

Create the loft with surfaces instead of sketch profiles.

Screencast

günther

[BaioS6N7CA]

This one is probably the original method I was looking to do, which works perfectly! Thank you both, these are really clean and much better than the methods I was using before.