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Resin The Next Little Thing for 3D Prtg

A tiny robot figurine made with Patrick Hood-Daniels cobbled together resin printer.

3D printing promises to bring users digital visions into the physical world. Thats literally what happens with an alternative to the mainstream 3D tech called stereolithography (SLA). Utilizing the same kind of projector often used for PowerPoint presentations and movie nights, these devices turn liquid into finely detailed objects.

The technology garnered attention at the recent Maker Faire in New York City, with models ranging from pricey and highly polished to extreme DIY.

Typical 3D printers, such as theCubify Cube, use a process called fused deposition modeling (FDM), in which a nozzle extrudes melted plastic filament, meticulously tracing out every detail of the object its making. SLA printing turns the process on its head. Instead of starting with a solid raw material, it starts with a liquid and turns it solid.

MORE:5 Coolest 3D Printers of Maker Faire 2013

The process uses a liquid, called photosensitive resin, that hardens into solid Polyester, vinyl ester epoxy or urethane when exposed to certain frequencies of light. Some resins react to visible light and have to be stored in black containers. Others react to ultraviolet light and have the same handling rule as for vampires: Alls well if you keep them out of the sun.

The big benefit of SLA printing is the ability to make objects very small, very detailed or both. The resolution of the print job on an FDM printer is limited by the thickness of the plastic coming through the nozzle. Good home printers, such as theMakerBot Replicator 2, get down to 100 microns (one-tenth of a millimeter, or 0.0039 of an inch). That may sound good, but the individual layers in a print job might still be visible, and surfaces wont be totally smooth. With a resolution of 10 microns or better (depending on the resolution of the projector), resin printers produce much finer detail, and items come out smoother.

That makes SLA printers a good tool for jewelry makers, for example, who can design a detailed piece and use the resin print to make a mold.

MORE:Find the Best 3D Printer for You

But that precision comes at a price. Standard fused deposition modeling printers that use plastic filament can be as cheap as about $500 for a kit full assembly required and slightly more than $1,000 for a fully built model (though some models can be twice as much). In comparison, B9 Creators eponymous all-metal resin printer, which emerged fromKickstarterlast year, costs $2,990 for a kit or $4,995 assembled. At Maker Faire, though, one hacker was showing off a DIY model that could cost well below a grand.

Texan Patrick Hood-Daniel, owner , displayed a wooden prototype that held a projector in place with a couple of bolts. The resin vat was just a small metal container. But even that rough setup turned out items that meet or beat the detail of jobs from an FDM printer, including a bowl that appeared to be woven of fine filament and a tiny Google Android figurine not much larger than a pencil eraser.

The device Hood-Daniel displayed is just and experiment. Hes still mulling over offering a an actual product. Hood-Daniel said that if he does, he would aim to put together a polished kit costing about $400 though it would require a project that could cost an extra $200 to $400.

But for now, its a proof of concept. I just wanted to see if it was possible, he said.

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Sean Captain is a technology and science writer, editor and photographer.

got to love how you got the thumb down when that is one of the better if not the best printing method, only problem is the print size they went with for the 100$ version.

while SLA printing is an easy concept, easy to implement, the cost of resin is too much.

SLS 3d printing is the next big thing.

it depends on the cost of the laser. sls is great and all, but required a more powerful laser than sla.

honestly, even sls wouldnt find its place in a home because of the mess it would make, however, the peachy printer just made the resin a non issue with a messes.

we will probably know next year which one will be the best, personally i am hoping for sls because the powder would make a wide WIDE range or materials a viable option for prints, and hopefully be cheaper than current markup (50$ a kilo of pls or abs, but pellets are 5$ a kilp)

Of course hardware that a hacker makes would be much cheaper at the same quality than other hardware. That is because the hackers research & development and patent royalty costs would be nearly zero because they would probably just steal all the intellectual property via reverse engineering and industrial espionage.

Nay! The next big thing is the old, old thing. Thats right, all that paper you have lying around, you can now use to make 3D stuff:

And no, if you watch the video youll know that this isnt flimsy stuff like paper-mache, but something far more durable, resembling wood. Cost of materials is low (and freely available for most people), but the same downside for nearly every 3D printer today: the cost of the printer itself. Still out of reach for most people. But theyre working on that. I have confidence that one day itll be affordable enough. Til then, the Peachy Printer looks like a swell alternative. Hope they succeed.

It was a pleasure to see that guy thinking clever ways around all those little things he needed to get done!

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200 grit sandpaper, wet item and sand down the rough items

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Youve seen a lot of resin jewelry tutorials, Im sure, but have you seen something like this? A great combination of wood and colored resin together for a beautiful pieces that looks

Never gonna make these propably. so difficult D:

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