What are the characteristics of that bio-plastic? Anyone know? If it holds up to UV and has decent strength, hardness and elasticity characteristics, you could make some really neat items with this (I'm totally with you on the LEGO hero-dad thing, @freggo). But if material characteristics fall short, then it's really just good for prototyping.
Now if they could print in some kind of high-temp ceramic, that would be REALLY cool. Then you could do an inverse-print to make a form-mold, and fill it with whatever liquid-hot plastic or metal material you wanted to make an object. Talk about hero-dad, you could make plastic or metal replacement parts for, well, just about anything. Imagine downloading component 3D image spec files from the manuf., buying a block of spec-X stainless steel or can of spec-Y plastic resin from the HW store, and voila... there's your replacement part.
This would lead to a subsequent market shift. Manufs that refused to publish part-specs because they want the replacement part (or item) revenue would end up getting out-marketed by manufs that don't. If I were the CEO of HomeDepot or Lowes, I would assign a new Veep in charge of replicator replacment parts. This person would be responsible for creating relationships with manufs, defining the in-store presence and required materials, setting pricing, procedures and policies, and then all-of-a-sudden the concept of what a HW store can market and sell undergoes a quantum change.
But they have to figure out how to do ceramic (or whatever material can hold the intended target material) form-molds first. And they need to improve on the 100 micron resolution for any moving or tight-fitting parts. Something on-par with what a CNC lathe can do in the radial dimension would be outstanding.
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