GEEETECH A30 3D Printer with Large Print Size: 320×320×420mm and Power Failure Recovery, 3.2″ Full-Color Touch Screen, Good Adhesion of Platform, SMARTTO Open Source firmware, Half Assembled DIY Kit.

Note:If you want to achieve the function of Auto Leveling, you need to buy a capacitive proximity sensor. The printer doesn’t support 3d touch sensor.

Printing Specifications:
Print technology: FDM
Build volume: 320*320*420mm
Printing accuracy: 0.05mm
Positioning precision: X/Y:0.11mm. Z:0.0025mm
Printing speed: 50-100mm/s recommended
Filament diameter: 1.75mm
Nozzle diameter: 0.4mm
Filament: PLA, ABS, wood polymers, etc

Software:
Operating system: Windows, MAC, Linux
Control software: EasyPrint 3D, Cura,Repetier-Host,Simplify3D
File format: STL,OBJ,Gcode

Temperature:
Max temperature for hotbed: 100℃
Max temperature for extruder: 250℃

Electrical:
Power supply: 110V/220V, 50HZ~60HZ
Display screen: 3.2″ Full-color touch screen
Connectivity: Wi-Fi (with an optional 3D WiFi module), USB, SD card (support stand-alone printing)

Mechanical:
Frame: Aluminum profile
Build Platform: Aluminum heatbed+ tempered glass
XYZ Rods: Wear-resistant aluminum profile( XY Rods) and lead screw (Z axis)
Stepper Motors: 1.8°step angle with 1/16 micro-stepping

Physical Dimensions and Weight:
Machine Dimension: 508×615.5×630.5 mm
Shipping box Dimension: 670x560x300 mm
Machine Net weight: 11.7 kg
Machine Gross weight: 14.6 kg

Product Features

  • 1, Super Large Print Size: 320mm×320mm×420mm, it enables you to print large-size 3D models.
  • 2, Fast Self-assembly: Just takes about 10 minutes to install the Z-plane kit on the XY plane. Simple and convenient.
  • 3, Filament Detector: Detect the abnormal situation of filament, such as filament fracture and outage, and trigger a signal to remind you to change printing material in time.
  • 4, Silicon Carbide Glass Building platform: Silicon carbide glass with microporous coating as A30 building platform, without the need of attaching the masking tape.It is of good adhesion, freeing you from the headache of first layer warping.
  • 5, Power Failure Recovery: It can continue to print from the same place where it stops, regardless of unexpected power failure, stopping to change the filament, stopping and print it tomorrow.

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Researchers use 3D printing to create patch that reduces heart failure

Researchers from the University of Alabama at Birmingham (UAB) and the University of Minnesota have developed a method to grow heart tissue that can reduce the likelihood of heart failure after a heart attack using 3D-printing technology.

The study, published in Circulation Research, was led by Jianyi “Jay” Zhang, MD, PhD, the chair of the department of biomedical engineering at the UAB, and Brenda Ogle, PhD, an associate professor at the University of Minnesota.

To grow the heart tissue, they seeded a mix of human cells onto a one-micron-resolution scaffold that they made with a 3D printer. Once in the scaffold, the cells formed into a “muscle patch,” or engineered heart tissue, that synchronously beats in culture.

The patch is designed to help regenerate muscle tissue after a heart attack since the heart cannot do it alone. Because remaining dead tissue can strain surrounding muscle and increase the likelihood of heart failure, the patch could help in preventing another heart attack.

The scaffold was seeded with a mix of 50,000 cardiomyocytes, smooth muscle cells and endothelial cells from human stem cells. The patch began beating within one day of seeding and continued to get stronger in following weeks.

In mouse studies, the muscle patch was surgically placed after a heart attack. Results showed significant improvement in heart function and a decrease in the amount of dead heart tissue. Cardiac function, blood vessel density and cell proliferation also improved.

“Thus, the cardiac muscle patches produced for this report may represent an important step toward the clinical use of 3D-printing technology,” the authors wrote in the study. “To our knowledge, this is the first time modulated raster scanning has ever been successfully used to control the fabrication of a tissue-engineered scaffold, and consequently, our results are particularly relevant for applications that require the fibrillar and mesh-like structures present in cardiac tissue.”