Hello,
I have read with interest your posting about your plastic product. I am avery experienced Product Designer with a mechanical bias and substantial experience in innovative design in plastics. I use Solidworks and cover the requirements you have listed.
I am certainly able to assist you in taking your product through the process to reach production, as I have carried out this exercise several times.
I would give you 3D CAD models so that you can inspect it from all angles. We could discuss and make modifications until the design is right. I detail all features for parting line, avoiding sink marks, draft angles, textures, colours, materials, hardness, etc.
I issue mechanical CAD files in formats that the manufacturers and prototype makers are able to input directly into their systems. I am able to deliver prototypes if required by you.
Please view my profile and client feed-back as well as my portfolio on the same page. You will see that I have several examples of real manufactured products, not just a collection of CAD images.
Feel free to contact me with any questions or to discuss the project.
Regards
Federico