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For over a decade, I've been helping people bring their products to life; sometimes that involves sketching, other times it involves 3D CAD files, and other times it's helping them build a prototype and / or get it manufactured. I have the skills, resources, and connections to help you realize your product idea.
I don't mind working hourly or for a fixed rate but fixed rates require an initial deposit equal to 1/3-1/2 the overall project cost.