Leading 3D Printer Company in China | Creality 3D
You are here: Home > Makers Guide
News Category

Makers Guide

CR-6 SE Autodesk Kickstarter Test Results

CR-6 SE has been on the Kickstarter campaign for a while, and it really won a great success.  as we all know that Autodesk research scientist Andreas Bastian has developed a test procedure designed to help creators better calibrate their machines and showcase their printers’ capabilities to backers on Kickstarter. 

Autodesk research scientist Andreas Bastian has developed a test procedure designed to help creators better calibrate their machines and showcase their printers’ capabilities to backers on Kickstarter. He developed a single, consolidated STL file that tests a printer’s dimensional accuracy, resolution, and alignment. For example, poor execution of the “bridging” feature shown below will lead to a saggy and stringy print. A well-calibrated printer will make the horizontal feature with fewer of those issues.



The geometry we’ve developed tests on how well a printer’s hardware and software are calibrated to a given material by stressing the system to the point of failure. The failures lead to the creation of witness features that can be used to assess the performance of the slicer, the extruder, and the motion system. While this geometry and protocol can reveal many different types of problems in a system, fixing the exposed problems is out of scope for this basic assessment protocol.
 

It’s important to create dedicated test features and to calibrate those features to guarantee at least partial process failure: causing failure allows you to confirm that you’ve actually reached the limits of a process and provides something discrete to measure and compare as relevant variables are changed.
 

Having discrete tests that each are calibrated to cause process failure, however, can become difficult to manage as the number of special tests grows, so having a consolidated geometry makes the process of testing a new 3D printer more manageable. We designed geometry to group non-interfering test features in the lower half of the print and places the riskier feature at the top of the print so that it doesn’t interfere with earlier test features.


Test Results of CR-6 SE

1. Dimensional Accuracy: Score of 4
Target Measured X Measured Y X error Y error
25 24.78 25.07 0.22 0.07
20 19.90 19.93 0.1 0.07
15 14.97 14.89 0.03 0.11
10 9.86 10.03 0.14 0.03
5 4.91 4.93 0.09 0.07
Average error 0.116 0.07    

Standards:
• If the overall average error is greater than 0.40mm, it is scored as "1".
• If the overall average error is between 0.31 and 0.40mm, score "2".
• If the magnitude of the overall average error is between 0.21 and 0.30mm, score "3".
• If the overall average error size is 0.11 and 0.20mm, score "4".
• If the overall average error is between 0.0 and 0.10mm, score "5".
 
Results:
Target 25 = X: 24.78mm / 0.22mm Error | Y: 25.07mm / 0.07mm Error
Target 20 = X: 19.90mm / 0.1mm Error | Y: 19.93mm / 0.07mm Error
Target 15 = X: 14.97mm / 0.03mm Error | Y: 14.89mm / 0.11mm Error
Target 10 = X: 9.86mm / 0.14mm Error | Y: 10.03mm / 0.03mm Error
Target 5 = X: 4.91mm / 0.09mm Error | Y: 4.93mm / 0.07mm Error
X Error Average = 0.116
Y Error Average = 0.07
 
2. Fine Flow Control: Score of 2.5
Measuring Method: Measure each of the spikes with the vernier caliper.
  • If the length of the spike is shorter than 30mm, score "0".
  • If the length of the spike is longer than 30mm, but there are some strings in between, score "2.5".
  • If the length of the spike is longer than 30mm, and there are no strings in between, score "5".
 
3. Fine Negative Features: Score of 5
Measuring method: Manually remove all the pins from the holes.
  • If no pins can be removed, score “0”.
  • If 1 pin can be removed, score “1”.
  • If 2 pins can be removed, score “2”.
  • If 3 pins can be removed, score “3”.
  • If 4 pins can be removed, score “4”.
  • If 5 pins can be removed, score “5”.
 
4. Overhangs: Score of 5
  • If there is curling, sagging, delamination, or collapsing at 15°, 20°, and 30°, score“1”.
  • If there is curling, sagging, delamination, or collapsing at 15°, 20°, score“3”.
  • If there is curling, sagging, delamination, or collapsing at 15°, score“4”.
  • If there’s same quality of surface smoothness at the four different degree, 15°, 20°, 30°, and 45°, score“5”.
 
5. Bridging: Score of 5
Standard: Bridging in 3D printing is an extrusion of material that horizontally links two raised points. To see whether there’s any bridging
  • Record a “1” if more than 3 are in contact with the surfaces beneath them.
  • Record a “2” if 3 bridges contact the surfaces beneath them.
  • Record a “3” if 2 bridges contact the surfaces beneath them.
  • Record a “4” if 1 bridge contacts the surface beneath it.
  • Record a “5” if no bridges contact the surfaces beneath them.
 
6. XY Resonance: Score of 2.5
Standard: Visually inspect the X and Y ringing features, illuminating the test print from the side to highlight any ringing captured in the print. This example would score 0.
 
If rippling in the X or Y axis can be observed at or past three hash marks, record a “0”, otherwise, record a “2.5”.
 
7. Z-axis alignment: Score of 2.5
If a layer registration effect with a period equal to that of the leadscrew is visible on the pillar supporting the fine positive features test, record “0,” otherwise, record “2.5.”
 
There’s no suitable measuring tool for us to measure, thus no results for Z-axis alignment.

 
CR-6 SE Autodesk Kickstarter Precision Test Video