When Henry Ford pioneered the technique of mass production, I doubt he ever imagined it being put to the use of making sex toys. Yep, contemporary manufacture of sex toys is done in an assembly line environment, just like any other mass market consumer good. Even for realistic models made from porn star molds, the manufacturing process for the dildo doesn't change.
Dildos can be manufactured from a variety of materials, the most common being rubber and variants thereof. Silicone, jelly rubber, and latex are among the most common materials used on the production line and in their liquid forms, they're easy to handle. Every factory will have a vast quantity of molds for each dildo they carry, so that whether the production order calls for ribbed, studded, or even monster dildos that are 11" or longer, the order will be able to be filled in short order.
China has become a popular nation for manufacturers to set up their dildo and sensual accessory production facilities; labor costs are dirt cheap and the distribution networks are in place to get products shipped quickly to the United States and other points abroad. On the production line, the workers will be provided with the liquefied material that the particular dildo model is made of and it'll be poured into the product mold. Depending on the grade of rubber used, it might take several hours to harden or you just might have to let the material set overnight. Once that's take care of, the brand spanking new dildo is ready to be packaged, secured onto shipping palettes, and shipped out to wholesalers worldwide.
Adult toy manufacture really doesn't differ any from manufacture of any other consumer good. Economies of scale play a great role in dildo manufacture; it's always cheaper to have a central production facility where mass quantities can be made for bulk shipping. While you're not likely to see a dildo factory in the spotlight on The Discovery Channel anytime soon, you can be sure that dildo production closely resembles any other assembly line process.
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