3D Spring Help

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VB

OpenGL

I am trying to create a 3D spring (helix, Spiral, ...) with a specific length and number of turns. I have the code written to create a spring using a line_strip, but I want to extend it to be an actual 3d surface (look like a real spring on a car). I figure this can be done using a quad_strip, but not sure what the best way to create this is.

Has someone done this?

  Gl.glPushMatrix()
        Gl.glColor4f(0, 0.28, 0.48, Alpha)

        Dim length As Double = glVectorRotation(point1, point2, False)
    
        Dim coils As Integer = 5
        Dim segs As Integer = 100
        Dim Radius As Single = 2.5
        Dim pitch As Double = length / coils
        Gl.glBegin(Gl.GL_LINE_STRIP)
        For icoil As Integer = 0 To coils
            For iseg As Integer = 0 To segs
                Dim theta As Single = CSng((2 * PI) / segs * iseg)
                Dim z As Single = CSng((icoil + (iseg / segs)) * pitch)
                Dim x As Single = CSng(Radius * Cos(theta))
                Dim y As Single = CSng(Radius * Sin(theta))
                If z > length Then Exit For 'z = CSng(length)
                Gl.glVertex3d(x, y, z)
            Next
        Next
        Gl.glEnd()
GL.glPopMatrix()