Based on our record, MFG seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Honestly, I'm not sure about prototyping capability on upwork. I guess a few of the freelancers there would have some capability of making prototypes -- especially if 3D plastic printing would work. Anyway, once you have a design you can put it up at mfg.com and get quotes to prototype it. Source: over 1 year ago
One way to go about it is create a Request For Quote, provide an outline and a set of deliverables and ask for quotes on a site like mfg.com. Source: about 2 years ago
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