Tutorial: how to model square spring in solidworks

model files Tutorial: How to model Square Spring in SolidWorks (Requested to me on Youtube)
video tutorial here: http://www.youtube.com/watch?v=Upi4YQw4Ukk

for best view, watch in 1080p resolution.

Points I forgot in the video, they'll make it more clear.

1 "outer edges" mean outside diameter
2 for surface sweep, there are 2 different sketches on same plane,
3 you can also use "up to vertex" for surface extrude, and select the top point of the line in the sketch defining the height of the spring

enjoy! learn and share!!