I would like to ask , how to create the elbow part of a metal type ( actually a J-shape Bolt Threaded material) .
I had finished the straight part by simply revolving my required profile. then i was to draw the elbow part but "sweep" doesnt work out
Inventor version? Post the file here.
In what way does Sweep not work out? Have you tried using the Bend Part tool?
If all you want is a "j bolt" you need 2 sketches.. 1 is just a "J" shaped single line sketch.. Then the other sketch is just a circle starting on a plane perpendicular to the first sketch start or end point. Then sweep and voila a "J"
see attached (done with INV 2012)
A Google search on "J Bolts" shows the thread on the straight part only - so no, that isn't what the OP is after.