Weird things when sweeping

[emimad]

Hello everybody!

I'm trying to make a custom thread (a PG11 nut, nothing special) but I've spent hours to get nothing.

See this strange shape when use the sweep tool whit a previous coil path:

Why is the shape tilting?

Of course, I've seen many antiparalell errors before.

I've followed this tutorial but I don't know why doesn't work for me:

https://www.youtube.com/watch?v=WvCNGR8C2uo

All help and tips are welcome!

[TrippyLighting · Accepted solution]

You need to select the Path + Guide surface as the sweep type:

 

[emimad]

Oh my god! So simple... I feel dull.
Thanks for your rapid response!