i need acme tread .the sweep option does not work..
I suppose that Roger-Marie want to say that the profile sketch should't be that wide, or wider, as the pitch of the thread. This will cause a "zero thickness geometry".
Pour créer un balayage, il faut un point de rencontre et une esquisse pas trop grande.
To create a sweeping(scanning), is needed a meeting place and a not too big sketch.
thank you a lot for a tip..