About Extension Warehouse: It is an online resource with various plug-ins developed made especially for SketchUp and these extensions help to add some special tools and features to SketchUp. These extensions can be found for any particular application like drawing or 3D printing and some industry specified tools for architecture, interior design, construction and many more. So basically in this Extension Warehouse people can do the following things:

• Users can search extensions by name or as per the functionality.
• They can also install various extensions with a single click of a button.
• Or users can also control all the extensions from easy-to-use location in the My Extension page.

Helix Along Curve extension initially grow with the need of covering some design requires in some personal projects. This plugin also allows creating different types of helix easily and quickly by previously selecting a line or curve which can be opened or closed. The program will automatically guess this and ask to generate a closed propeller in the case of a closed curve.

Here are some different options that can be done with the help of this extension:

• Users can give a value for the start radius of the propeller and another for the end.
• They can also define the number of turns of the helicoids.
• This extension can specify the number of straight parts that invent each spin of the helicoid.
• It modifies the helix construction start angle.
• If users set the level of ‘noise’ then they can add a different random value related to the radius of each turn of the helicoids. Here the intensity of the noise will be greater when the value entered is closer to 1.

• Users can choose between five different options for a parameter called “adherence to the curve” which allows them to know whether the helicoids will follow the curve strictly and suddenly or smoothly.
• There is an option called “Calculation mode” which overview in a simple way multiple internal parameters that would be difficult to understand; in this matter, users can soften the curve a little bit.
• There is a possibility to specify the direction of rotation of the helicoid.
• Users can create the helicoid only with lines or with a circular tube.
• If they choose to create the tube, can define its radius and also can specify the number of sides of the tube.