[REPRAPGURU] Reprap 3D Printer Replacement Heater Block Assembly for Prusa i3 also fits MakerBot Replicator 2

This heater block assembly is a perfect match to the current one on the MakerBot Replicator 2 3D printer. MakerBot’s standard-issue heater cartridge fits perfectly into the hole provided, as does the thermistor. This assembly includes the aluminum heater block, MK8 nozzle, stainless steel thermal barrier tube, heater cartridge set-screw, and 2 M6 jam nuts.

Product Features

  • Perfect match to the original MakerBot part
  • Easy to install
  • Get back up and printing, Fast

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3D printing may be cool – but also toxic, study warns

Relatively cheap but extremely useful, 3D printing can produce almost everything from toys to real implants. However, new research shows the technology may have a dark side, as some materials used in the process have been found to be toxic to some fish.

The Environmental Science and Technology Letters journal has published the results of tests carried out by a group of researchers from the University of California, Riverside, under the title “Assessing and Reducing the Toxicity of 3D-Printed Parts.”

READ MORE: Patient gets 3D-printed metal ribs for the first time ever

Interest in the safety of materials used in 3D printing was sparked in 2014, when Shirin Oskui, a graduate student at the University of California, Riverside, used a 3D printed part in her study of zebrafish embryos that subsequently died. 

The accidental discovery led to a full study led by William Grover, a bioengineer and assistant professor at UC Riverside, in which 2.5 cm-diameter plastic disks that had been 3D-printed by two types of machines were placed in petri dishes containing zebrafish embryos.

The team tested the materials used by two of the most popular 3D printers: melted plastic used by Dimension Elite by Stratasys, and liquid resin used by Form 1+ by Formlabs. 

The survival and hatch rates among the embryos saw negative effects in both samples. The embryos exposed to parts from the plastic-melting printer had a slightly lower average survival rate compared to the control embryos.

However, more than half the embryos exposed to the liquid-resin disks died within three days and almost all had perished after a full week. The very few that did survive showed signs of developmental abnormalities after hatching.

“We were pretty surprised [by] this and thought other people should know about it,” Grover said, according to Newsweek.

READ MORE: Breakthrough in 3D-printing? MIT unveils device molding 10 materials at once

However, the researchers have also established that exposing 3D-printed parts made from liquid resin to ultraviolet light reduces their level of toxicity significantly.

The next step in the research will be to study the components of 3D printing materials and try to estimate how harmful they could be to humans.

“Many people, including myself, are excited about 3D printing. But, we really need to take a step back and ask how safe are these materials,” Grover concluded, calling for authorities to reconsider present regulations on 3D materials and work out new strategies for their safe disposal.

For now, the researchers advise disposing of materials used in 3D printing at hazardous waste centers.

This 3D printer is also a scanner and laser engraver

It’s a pretty awesome time to be a maker. There are desktop CNC machines, circuit printers, laser cutters and 3D printers, plus all kinds of microcontrollers to cheaply turn anything into a functional, connected device. The new FLUX machine, which went live on Kickstarter today, attempts to group some of those desktop devices into one without making you pay more.

FLUX’s trick is a modular head that can be switched out to adapt it to different jobs. It can convert from a 3D printer to a laser engraver to a 3D scanner. And more applications are in the works, including food and ceramics 3D printing and unnamed ideas being worked on by FLUX’s partners.

The FLUX printer's head is modular, allowing it to be swapped out for different applications.

The FLUX printer’s head is modular, allowing it to be swapped out for different applications.

I noted last year that combining 3D printers and scanners is an inevitable step. Few of us are qualified to scan a broken object, import it into a CAD program and stitch it back together before exporting it to a printer. But if a user can just set their broken object on the bed of a 3D printer and it takes care of the rest of the process, the technology becomes a lot more accessible. Scanning and 3D printing just go together.

Integrating laser engraving into the mix is a bit more unusual. But it’s pretty useful to have both technologies at hand, as there are plenty of jobs better suited to a laser than a 3D printer. Last year I 3D printed a chess set and opted to make the board with a laser cutter, for example, and it saved a whole lot of time. It’s just another awesome tool to have available.

An apple scanned and then 3D printed by FLUX.

An apple scanned and then 3D printed by FLUX.

FLUX has some other neat features too, most notably its software. The company is advertising a 3D modeling system that allows you to create a 3D object by drawing a 2D picture. That’s a simple way to get your ideas onto the 3D printer without knowing much at all about 3D modeling.

A FLUX machine will run you between $499 and $1,999 — not bad considering plenty of consumer 3D printers will run you several thousand dollars. They are expected to ship next summer.

Photos by FLUX.

.925 Sterling Silver Trollbeads Style Exquisite Limited Edition Murano Glass ” Semi 3D Footprint On White Glass ” Bead Also Fits Pandora Chamilia Kay Etc. Bracelet

Product Features

  • Quantity: 1 Bead
  • Material: S925 Solid Silver Single slide on Core 4.5mm (not threaded)
  • Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Kay, Carlo Biagi, Zable, and other add-a-bead bracelets.

Click Here For More Information on 3D Printing

.925 Sterling Silver Trollbeads Style Exquisite Limited Edition Murano Glass ” 3D White Dalamtian Dog ” Bead Also Fits Pandora Chamilia Kay Etc. Bracelet

Product Features

  • Quantity: 1 Bead
  • Material: S925 Solid Silver Single slide on Core 4.5mm (not threaded)
  • Fits: All major Brand Bracelets, such as Pandora, Troll, Chamilia, Kay, Carlo Biagi, Zable, and other add-a-bead bracelets.

Click Here For More Information on 3D Printing