At this stage you are ready to make your invention. This might be a full size model or a prototype.
Source: Tool., Inc
One of the essential early steps in the inventing process is creating a prototype--which, simply defined, is a three-dimensional version of your vision. This article walks you through some of the steps involved in making your prototype.
This article includes an extensive guide and tips on not only have to make your prototype, but how to test and refine it to make your product better.
This guide talks about the different types of prototypes, as well as giving a guide on how to create your own prototype.
This article has great tips on how to make prototypes of your product out of household items, especially if you have mechanical parts in your product that require wiring.
