How cheap can a 3D printer be and still function? Although they seemed plucked out of science fiction, there’s not really that much to these machines. A few stepper motors, some switches, a control board, a heating element, and a nozzle are really all you need. It’s the software, and the expiration of a bunch of patents, that kicked the 3D printing revolution into high gear.
Is it possible to assemble the right collection of components to make a functional 3D printer for less than $100? iNSTONE thinks you can, and they are not wrong.
Monoprice, the king of rebadged 3D printers, has two entries in the sub-$200 printer category. We already dug into the guts of the Mini Delta, a great little delta-style printer, and now it’s time for the Monoprice Select Mini! This is a pretty standard cantilever printer, with the x-axis tied to the print bed and an y-axis connected by a single support to a moving gantry. It’s basic, but solid, with a bare-bones set of features that gets the job done.
There is also a Select Mini Pro which, since this review series started, has been discounted to $199. It does look like it has some nice features that make it wort the extra $11, including an automatic bed leveler, magnetic build plate, and touch screen. The budget for this series is blown, but if Monoprice wants to send us one *hint hint* I’ll be happy to put it through the wringer.
Monoprice is a rebadger, as we explained in the Delta review, and this printer is identical to the Malyan M200, which itself seems to be an improvement on the Infitary R100.
This is the only printer in our series with steel construction, so I have high hopes that it will stand up to the abuse I’m about to heap upon it.
Sharks are often thought of in terms of superlatives, and perhaps no species has racked up as many “mosts” as the Great White Shark, Carcharodon carcharias. This is the star of “Jaws” after all, and probably the species most people who aren’t devoted to being familiar with fish visualize when they hear the word “shark.” Thanks to new research by Marra and friends (2019), we’re becoming familiar with the White Shark on the most basic level of all: the genetic level.
Not every species has had its entire genome decoded, and the White Shark is one of only a handful shark species to get this level of attention. The Whale Shark and the Elephant Shark (actually a species of chimera) have also had their genetic codes mapped, providing a couple of fairly closely-related species for comparison. By comparing the full genome of the White Shark with these other shark species and other vertebrates, the authors were able to identify specific mutations that have stood the tests of time and natural selection. Many of these genes are associated with the very traits that have made sharks such incredible survivors for going on 450 million years.
You can buy a 5-lb bag of polymetallic nodules from the Clarion-Clipperton Fracture Zone on Amazon, right now.
Depending on your vantage point and how long you’ve participated
in the deep-sea mining community, this will either come as a huge surprise or be
completely unexceptional. Prior to the formation of the International Seabed
Authority, there were no international rules governing the extraction of
seafloor resources from the high seas. Multiple nations as well as private companies
were engaged in exploration to assess the economic viability of extracting
polymetallic nodules and tons of material was recovery from the seafloor for
research and analysis. Some of that material almost certainly passed into
private hands.
One of the reasons 3D printing exploded seemingly overnight a decade ago has a lot to do with the RepRap project, an initiative to build a fully open-source and largely 3D-printable 3D-printer. The idea of a machine that could replicate itself was pulled straight from the pages of science fiction, and yet, here were machines–janky, kludgey, barely functional, machines–assembled from parts clearly fabricated by those same machines. They were conceptually impressive, but not a particularly awe-inspiring sight to behold.
And then came Josef Průša and the Prusa Mendel.
Affectionately known as the Ford Model T of the 3D printing world, the Prusa Mendel was the first of the open-source 3D printers that was designed to be easily mass produced. It looked good and it ran great. Released under an open-source license, it was replicated and iterated on a massive scale. That didn’t prevent Průša from building a successful company. The current Prusa i3 MK2 is among the most successful desktop 3D printers in the world, and certainly one of the best.
Clocking in at $197.69, the Anet A6 is the most expensive printer in this review series. It’s also the biggest, with a massive 220mm by 220mm by 250mm build area. It’s an upgraded version of the popular Anet A8, with a larger build volume and a better user interface, but not much else. From reviews, this printer seemed like a solid representation of what you can get at the top end of the menagerie of sub-$200 Prusa i3 clones. It (and its smaller A8 brother) certainly have the fan-base and hacking community to support its reputation.
Anet A6, working hard. Photo by author.
This acrylic-framed beast ships as a kit, so expect to spend half a day putting this printer together.
If you’re going off of dollar per cubic millimeter, this is the best bang for you buck by a wide margin. And that’s about the extent of the good things I have to say about this machine.
Monoprice is an interesting organization. They’re a rebadging company that seeks out unbranded or off-brand products, makes a few tweaks, and then sells them to secondary markets under their own brand. They made their mark in the early 2000s selling good, cheap cables and have expanded from there. You can find headphones, cookware, cables, computer accessories, and, of course, 3D printers, under the Monoprice label. But that doesn’t mean their products are cheap knockoffs. Monoprice has a reputation for finding quality equipment.
The Monoprice Mini Delta is a rebadged Malyan M300. From the specs, it doesn’t look like Monoprice changed anything but the logo, and that’s a good thing. Malyan printers have a great reputation.
This is a delta printer, which means rather than having independent X, Y, and Z-axes, three identical stepper motor arrays work in tandem to control the position of the extruder while the bed itself remains stationary. It uses a Bowden-style extruder that keeps the weight on the printhead down. It has an aluminum frame with steel structural elements. The relatively small circular print area is 110 mm diameter by 120 mm height. Controls are integrated into the printer and it allegedly has WiFi capability through an app.
