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							Helix
 
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Helix
 Ribbon: Home, Draw – Draw >
       Ribbon: Home, Draw – Draw >  Helix
 Helix
 Menu: Draw –
       Menu: Draw – Helix
 Helix
 Command line: HELIX
 Command line: HELIX
Command creates 2D spiral or 3D spring. Helix is used to create springs, carvings, rounded stairs.
Options:
| Base radius | Radius of helix base. | 
| Top radius | Radius of helix top. | 
| Axis endpoint | Endpoint location of the helix axis. The axis endpoint can be located anywhere in 3D space. The axis endpoint defines helix length and orientation. | 
| Turns | Number of turns for helix. | 
| Turn height | Height of one complete turn within the helix. The number of turns will automatically update accordingly when a turn height value is specified. If the number of turns for the helix has been specified, you cannot enter a value for the turn height. | 
| Twist | Direction of helix twist: clockwise (CW) or counterclockwise (CCW). CCW is default twist. | 


Command prompts:
| Specify center point of base: | Specify center (1) point. | 
| Specify base radius or [Diameter]: | Specify base radius (2). Click Diameter to specify base diameter. | 
| Specify top radius or [Diameter]: | Specify top radius. Click Diameter to specify top diameter. | 
| Specify helix height or [Axis_endpoint/Turns/turn_Height/tWist] | Specify the height of helix (4). |