For 3DS...
- some experiance with drawing swords
- draw a sword or get a ref pic (you should not start drawing splines without an idea of the overall blade design yet)
- create the balde spline. Roughtly first, then edit it to the final state
optional for symetric swords:
- onyl draw one half of the blade
- mirror it and weld the verticies
- delete the centre lines
- use "bevel" to extrude and bevel the spline to a solid object
Bevel:
-1st bevel increases the size
-2nd bevel reduces the size to default aggain
-the caps on top (aswell as on bottom) should be generated automatically.(if not, selcet the edges yourself and use the "Cap" tool)
After that edit the verticies of the cap
so the blade doesn't look so simple beveled
and optionaly add some carves or "sawtooth" via booleans.