Polycarbonate-PBT Wing

What we printed today! This was a monster print. PBT is used extensively in the electrical industry and remains largely undiscovered in the 3d printer world. The PC-PBT (https://www.sabic-ip.com/gep/Plastics/en/ProductsAndServices/ProductLine/xenoy.html) has amazing strength and stiffness, but for a print this large it requires a HOT chamber. We ran at 100C for the duration of the print. 

  • 1mm Nozzle
  • ABS Material
  • 7kg
  • 32" x 12" x 10" 
  • 72hr print time
  • 2,500 mm/min
  • 100C chamber temperature

850mm PETG Pedestal Vase for Houston Maker Faire

We attended the Houston Maker Faire and printed these pedestals to giveaway. Using vase mode we experimented on how quickly we could print. Turns out it was quite a bit faster than even we expected! These prints were coming off at a rate of almost 3 per day. 

  • 1mm Nozzle
  • PETG Material
  • 2.5 lbs
  • .45mm layer height
  • 850mm x 350mm x 350mm 
  • 9hr print time
  • 5,000 mm/min
  • 50C chamber temperature

G2 / G3 Vector based printing

Why are we still use the STL file format, I have no idea. My hope is that a true parasolid NURBS based slicing program is not far out. In the meantime, we are using a few tricks to show what is possible. Through custom hardware, firmware, and post processing, we finally implemented a workflow on top of the current STL slicers that shows what a vector based approach can do.

 

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Here is a side by shot shot with the exact same geometry printed as an STL with G1 line-to-line type gcode vs. a G2/G3 arc based gcode. Note that servo tuning/jerk/accel settings all remained constant between the tests. The average STL facet size was 2mm. The approximate radius of this corner is 10 inches. Some of this is definitely a by-product of the larger mass of our system, but it goes to show how important a rigorous approach to smooth and continuous acceleration paths can be.

  • Polycarbonate 3mm
  • 70mm/sec
  • .6mm Layer / 1.2mm road
  • 3 contours


Vectorslicing

12 New & Notable 3D Printing Products from RAPID 2015

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