Maybe, maybe not. It all depends on the quality of the design and materials. There are a lot of different grades of printers and materials and designs you can go with...
The current problem is that the print resolution for home commercial plastic printers isn't at the level yet that most people would deem "acceptable" for toy production. There's still a lot of work that needs to be done after the fact to clean up the parts and make them look like off-the-shelf product. This also makes designing parts with specific tolerances (like for joints, or for removable/holdable accessories) a bit of a crapshoot. There are also resin-type printers that can create much smoother-looking product, but resin isn't an acceptable medium for toy production. These machines are used for rapid-prototyping in the industry, but the raw material itself is toxic, as is the dust it produces when the cured material is sanded, and it's relatively brittle (hence the often broken/glued grey resin prototypes you see at trade shows). All the above hasn't stopped amateur hobbyists from trying, of course, to varied results. But the fact is that the technology isn't at the level yet where it can feasibly replace traditional manufacturing methods, nor is it serviceable for laymen.
There's the Mecha Zone line and Toy Notche's Astrobot started as a 3D printed toy by an Aaron Thomas Home from Mecha Zone Robots Store Products Aaron Thomas I guess it really depends on who's willing to pay for what, and how you 'toy'. I mean, I don't 'play' with toy's per se: I like to collect; delve into the history of - say - pre TF stuff; photograph my collection and converse with people here for the joy of it. Long story short, how durable do you want it to be? Durable like a Hasbro action figure, or does it matter to you if you need to handle it like an expensive collectable? That being said, I've seen some pretty cool stuff that was more... art? than a toy in the traditional sense, but still something I might consider buying (I'm thinking of Valerobots on Etsy in particular. Found out about them because someone of Flickr used one of his/her? bots in a photo as a vehicle - of Acid Rain toys - and made note of it). Of An Agnostical Bent (Acid Rain toy with Valerobot) The reason I'm going into all that is to basically say, sure, why not? I don't know if I would use the word 'should', but I like that people who otherwise may not get a kickstarter off the ground still have a shot at getting their vision turned into reality. And frankly, I wonder how long it will be before the idea of buying something sitting in a warehouse and having it shipped to you will be replaced with having it printed out for you in your home.
I'm asking that because plastic will be banned in the future and mostly toys is made from them. Maybe some material from 3d printer could be a perfect replacement.
That's a bit sensational. Toy-quality 3D printing is still plastic, and plastics are too useful overall. We'll just shift over to bio-plastics.
The only 3D-printed stuff I got to personally see and feel are these 3D figurines with your face on. And to be frank, the technology is still not there yet. The material used is like the dry pottery clay making it not the most durable thing to mess with and the paint is too fuzzy. The surface and texture is not smooth (almost like sand) and sometimes you see it as layers stacked on each other. The technology needs to be improved if we want to get our sharply painted, smooth textured and durable action figures at the press of a button.
