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The agony (and no ecstasy) of a 3-D printer

This was the result of Seth Stevenson’s attempt to create a bottle opener.

Slate/Juliana Jimenez Jaramillo

This was the result of Seth Stevenson’s attempt to create a bottle opener.

We keep hearing that 3-D printing is the future. Very soon, it seems — like maybe in July or so? — we'll all have Star Trek-type replicators in our homes. "Computer," you'll say, as you nibble a pastry, "please fabricate me a comfy new couch." And lo, a sectional recliner with integrated cup holders will instantly appear.

How close are we to this scenario, really? Companies have been racing to create printers that combine reasonable cost, compact size and user-friendly operation. But it's not clear that anyone's hit that sweet spot yet.

To get a sense of the current state of at-home 3-D printing, I borrowed one of the latest models. Not one of those industrial jobbies that get used by big companies, but rather a "desktop" printer.

When the Solidoodle 4 — retailing for $1,000, and vaguely resembling an obese microwave — arrived at the Slate offices, I eagerly unpacked it. I threaded the spool of filament (like a bobbin of yarn, if the yarn was made of ABS plastic and the bobbin was the size of a paint can) into the printer's nozzle. I connected the printer to my laptop's USB port. I fired the thing up, with a whir and a hum. I assumed I'd soon be awash in an endless supply of newly conjured 3-D stuff.

But the moment I attempted to print my first object, I realized that this device isn't really designed for the average, moderately tech-savvy consumer. It's made for people who possess either a) infinite patience, b) a preternatural attention to detail, or, preferably, c) a post-graduate degree in mechanical engineering.

For example, the program you download to your computer so you can control the printer is full of buttons labeled with phrases like "Go Dump Area" and "Flow Multiply" and "Kill Slicer" and — somehow both reassuring and worrisome at the same time — "Emergency Stop."

I decided it might be prudent to call Solidoodle tech support. An extremely helpful fellow named Joel walked me through the setup. He instructed me to heat the extruder (or as I'd been calling it, the nozzle) to 215 degrees. Then he had me click over to Thingiverse.com and download a simple design for a bottle opener.

Confusingly, he asked if I happened to have a can of hairspray on hand. "Maybe like Aquanet?" he suggested.

I inquired of a nearby colleague, but she was not in possession of any hair care products. Luckily, this turned out to be noncrucial. Joel explained that the hairspray becomes necessary only if the object you're printing is sliding around on the printer bed — some Aquanet, applied to the bed, helps stick things in place.

Winging it without any styling aerosols, I sent the bottle-opener program from my laptop to the printer, clicked "Run," and watched with glee as the Solidoodle sprung to life. The nozzle darted to and fro, extruding a thin stream of plastic with what appeared to be solemn purpose. I bid goodbye to Joel, confident I'd figured this thing out. And I watched as layer after layer of carefully laid filament slowly formed an amorphous, incoherent plastic blob.

Okay, a less than total success. But I wasn't deterred. And I refused to call Joel again. I began to play around, moving the extruder on its x- and y-axis with a click of my mouse. I turned the heat back on and coaxed it up to 215 degrees. Then I noticed that my filament was snapped, and I had to rethread it. But a small piece was stuck inside the nozzle. I called Joel.

"Do you have a sequential set of Allen wrenches?" he asked. "Preferably in metric? I'm pretty sure it's a 1.5mm screw, but you might want to have an assortment."

I turned to my colleague again, but she was no more help with Allen wrenches than she'd been with the hairspray. "Okay," said Joel, "you can try to melt it out. Heat it to a really high temperature but try not to damage the machine or hurt yourself."

Using a pair of extra-long tweezers that came with the printer, I was able to half-melt, half-yank the filament out, rethread it and try again. Once more, the printer cheerily jumped into action. This time I'd set the bed too low, so the plastic drooped from the nozzle with no platform to land on. Instead of a bottle opener, I ended up with a scraggly bird's nest.

Now absolutely determined to print some sort of recognizable object, I raised up the bed, heated the nozzle, and downloaded a program that builds a tiny robot figurine. This time, everything seemed to work correctly. A pair of little robot legs took shape. And then the printer just halted, for no discernible reason, leaving a sad, half-formed robot body, almost poignant in its abandonment. I call it Robot, Interrupted.

I spent some time attempting to suss out where I went wrong. But after a while, I gave up. I mean, let's say I got the printer working again. Best case scenario, I've melted no one's eyes and I've got a new robot figurine. Woohoo. And $1,000 for the printer plus $43 for each spool of filament is a hefty price to pay for a functionless, semidecorative piece of plastic I could buy for like 23 cents.

What's more, the printer was loud enough that office colleagues were beginning to complain about the racket. It was emitting a smell not unlike that of burning hair.

All of which points to some fundamental problems with the current state of desktop 3-D printing. Right now, there's basically nothing you can make that you actually want or that is cost effective. It's all trinkets and gewgaws. The most popular patterns at Thingiverse are pen holders and elephant figurines and flimsy, unattractive iPhone cases.

Until there's a killer app for the desktop 3-D printer, I can't see any reason for the average person to buy one. And I can't yet imagine what this killer app would be. What could you manufacture at home in a manner that's cheaper and more efficient than could be done in a giant factory?

I could be wrong. Perhaps today's 3-D printers are akin to the cellphones of 1987. Over time, we'll graduate from the Motorola DynaTac 8000X to the iPhone 5s — smaller, faster, more capable, and, eventually, indispensable. But I'll bet you a pile of extruded plastic goo that I'm right.

The agony (and no ecstasy) of a 3-D printer 03/19/14 [Last modified: Wednesday, March 19, 2014 4:55pm]
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