For any product design, initial idea has to be converted into a  cad design/ 3 model which can be used by manufacturer or 3 d printers to create the product. Since, complexity of each part varies from one to another, hence the cost and deadline will also vary depending upon the complexity. Manufacturer ask for  3d model in step file format which is possible only through use of specific engineering softwares. I am using solidworks. I can provide step file format along with solid works file for future development of product. Secondly, for 3 d printing, stl file format is preferred. I can provide stl file with perfect scale. 3 D MODEL IS MUST FOR ANY PRODUCT DESIGN.

Once a product is set for production, you may require 2 d technical drawing of manufacturer standards suitable for production. I can provide that as a separate part of this job. 

For advertisement, for showcasing idea to investor, or for creation of brochure, you may require high quality image of a product. I can provide a very realistic render just like a real life product which you can use it even before the actual prototype is made :) That is the real benefit of 3 d design.

I am a mechanical engineer and can provide you consultation on best suitable material for your product depending upon its application. I also perform stress analysis, finite element analysis, etc for different loading conditions. Please consider this in a separate package

I need complete description on working of product, features of product, design constraintsfor example: i need 1 liter of bottle with maximum height of 300mm, etc. You can provide a sketch with rough measurement, rest I will handle :