Hi MS, No trick. It can't currently be done. However, you can get some pretty good results another way. I usually create a side view sweep path for pipline extrusion objects as you've described. Following that, I'll choose 'Free' in the extrusion envelope option. Finally, I'll create some custom cross sections to handle any assymetry in the object and go and adjust the envelope path as required. Final adjustments can be made to object by (this is for safety's sake) duplicating the object and converting it to a vertex model. This way you can go in and adjust individual vertices to your liking. Sorry for the cheesy example but it's all I have time for this morning. Good luck! Mark www.markbremmer.com