Tag Archives: SLA 3D Printer

Maker creates a super fast, continuous SLA 3D printer


This super fast DIY 3D printer may one day take on the likes of Carbon3D.


Just the other week, Carbon3D unveiled a groundbreaking new 3D printing process, which is being billed as anywhere between 25 and 100 times faster than machines on the market today. Hot on the heels of this big announcement, 3DPrint.com has brought to our attention another super speedy SLA 3D printer. The difference? It stems from the Maker community, more specifically, a University of Buffalo industrial engineering student named Bo Pang.

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While it shares a number of features with Carbon3D, one noticeable difference is that the device uses an oxygen-permeable window to create a thin layer of uncured resin between the window and the object.

“This dead zone guarantees the part can grow without stopping, and this is the key to the CLIP process. For our machine, we don’t use that oxygen-permeable window, but we instead use a special membrane to create that thin layer of uncured resin. There are 2 advantages of this special membrane,” Pang explains. “First, this membrane is much less expensive than the oxygen-permeable window, as it only costs about 1/100 of the price of the oxygen-permeable window. Second, this membrane is very easy to mold, meaning we can make this membrane almost any shape we want.”

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Despite having a relatively small build volume, the DIY device is capable of printing with an XY axis resolution of 15 microns and a Z-axis resolution of 10 microns. As the Maker showed 3DPrint.com, he was able to create a mini replica of the Eiffel Tower measuring 10mm x 10mm x 20 mm in just over seven minutes, not to mention a larger one (40mm x 40mm x 100mm) in 12 minutes.

Still a work in progress, Pang notes that the SLA 3D printer’s build volume can be expanded with some minor calibration. Intrigued? You can read all about the project on its initial write-up here.

Maker builds a DIY SLA 3D printer for less than $30


This SLA 3D printer can be created using materials found throughout your home — and an Arduino.


Although many 3D printers strive for simplicity and affordability, this one surely takes the cake. Whereas a device under $500 may catch your attention, one that costs less than a Saturday night dinner surely will hold it. Buildyourownsla.com user “Mystamo” recently created a DIY SLA 3D printer for less than $30 that prints from the top-down or bottom-up, all powered through an Arduino Uno (ATmega328).

Laser

SLA typically features a bottom-up style due to issues like the need for more resin and layer height control. A projector or laser diode sits underneath the resin tank with transparent bottom and a non-stick surface, pointing upwards to cure the resin.

For his build, Mystamo had taken his top-down device and wanted to test as to whether it would work with his ACER 5360 720P projector for a bottom-up design as well. After some investigation, the projector was indeed suitable for the job without requiring much further customization other than removing its focus screw for manipulating the focus wheel and a little fine-tuning of the focus.

Printer

The Maker reveals that since he didn’t have Z-axis limits, he set the build plate just slightly above the resin surface with some resin pointing out of the his perf board holes. Mystamo acquired an inexpensive stepper drive that was soldered directly to the pin, and added a few connectors for easy removal. It also runs at 1/16 micro stepping. Beyond that, he refined his 3D printer by employing the Arduino to run a very simple HTL code with only minor modifications.

From there, the 3D printing process was ready to begin with 8-second exposures on the first three layers, and 2.5 second exposures on all other layers, all at 0.05mm per layer. While this particular design doesn’t use any 3D-printed parts itself, it still embodies true DIY spirit as the entire thing was devised using items found around the house. And in case you’re wondering, yes it works, as seen with his latest print: a Terminator skull.

Skull

Intrigued? Learn more by heading over to the Maker’s forum post here.

Elemental is the world’s first pressure controlled 3D printer

Designed by the crew at Australia-based startup Hardcotton, Elemental is the world’s first pressure controlled stereolithography (SLA) 3D printer.

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Powered by an Atmel | SMART ATSAM3X8E Cortex-M3 MCU, Elemental is destined to become one of the latest and greatest innovations in the consumer space thanks to its unique spin on 3D printing. The machine uses a patent-pending pressurization system to present a dynamic approach to once-traditional desktop SLA printing.

Whereas a vast majority of traditional devices rely upon a mechanical process to move a build platform away from the source of print production after each layer is printed, Elemental increases the volume of resin above the build platform. Once only found in low-end FDM machines, Makers will now be able to affordably create parts of complex geometries and intricate details necessary for professional grade design.

“We thought about what you need from a 3D printer before we thought about what we would develop,” a company rep writes.

By utilizing its pressure control technology, Elemental’s laser system can cure a layer of resin in a more accurate, efficient and quiet manner. According to Hardcotton, the first layer is cured onto the surface of the removable build platform in the center of the vat. The pressure control system enables the flow of material from one of the control chambers into the build chamber, thereby increasing the level of the resin by a certain, precise and extremely fine amount. The laser system then sets the next layer of resin to further create the object. This process is repeated until the object is completed.

“Pressure control provides an extremely high level of accuracy in printing layer upon layer during the print process,” the team explains. Impressively, 3DPrint.com notes that the entire process is extremely silent with no Z-axis movement, with no additional support needed, as the resin surrounding the printed object provides all the support required.

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The Elemental features a build area of up to 200mm x 200mm x 200mm, Z control accurate to 1 micron, 24-bit XY control resolution (variable through software), a 405nm laser, along with a stand-alone SDcard and Bluetooth functionality.

Hardcotton CEO Scott Pobihun says the Elemental fills the gap between low-end hobbyist machines with limited resolution and expensive high-end printers.

“There are many low-end 3D printers on the market that don’t have the capability to truly produce the high quality prints you’re looking to achieve. And those high-end printers that are able to produce high resolution prints are complex to configure and use, as well as being expensive.”

Interested in learning more about this ATSAM3X8E based device? Head on over to its official page here.