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How can I get a curve on screw shape/line ? Is it possible in Blender ? I made the mesh above in the picture by screwing an hexagon (circle with 6 edges).
But this way, it is hard to work on its edges without deforming it. So far result:
My aim is to make like metal part in picture below. So it would be easier with curve modifier.
Try adding bevel and taper to the spiral curve like this (of course smooth shading and subsurf will help).
starting with a setup like this:
you can get something like that shape using bevel, bevel object and taper to the shown curve circle:
You may achieve it using Extra Objects (Curve) add on, then beveling a curve and edit it with a proportional editing.
Activate the add on in User Preferences (Ctrl+Alt+U).
Go to Add-->Curve-->Spirals.
Play with a spiral's settings in a Tool Shelf (T).
When you're done keep extruding the bottom segments of a curve to create vertical part of a corkscrew. Add a Bezier Circle and use it for beveling the curve.
Finally enable the proportional editing, select the very end segment of a spiral, then press Alt+S to adjust its bevel radius. Use Mouse Wheel to adjust the influence of proportional editing. To make the end of the spiral sharp select the last curve's segment and press Alt+S, 0.
