Score 28 : Autodesk and Kickstarter Test Print

Autodesk and Kickstarter Test Print

Hello,

Dear Rose Go backers!

This week we printed a prototype of FDM on Kickstarter using ROSE GO, and it worked great, so let's take a look at our results.

The test geometry is a single, consolidated STL file that tests a printer’s dimensional accuracy, resolution, and alignment. We tested it on the ROSE GO prototype and printed with a layer height of 0.15 mm.

Source: https://github.com/kickstarter/kickstarter-autodesk-3d

Timelapse Video

3D Printing

  • Model: ROSE GO
  • Filament: ROSE GO PLA
  • Nozzle Temperature: 195℃
  • Layer Height: 0.15mm
  • Printing Speed: 30 mm/s
  • Time: 8h
  • Infill:10%
 專案影片縮圖

Dimensional Accuracy

To assess dimensional accuracy, measure each tier of the dimensional accuracy stack and record the absolute different between the target and the measured dimensions in a table.

  • Record a “1” if the magnitude of the overall average error is greater than 0.40mm.
  • Record a “2” if the magnitude of the overall average error is between 0.31 and 0.40mm.
  • Record a “3” if the magnitude of the overall average error is between 0.21 and 0.30mm.
  • Record a “4” if the magnitude of the overall average error is 0.11 and 0.20mm.
  • Record a “5” if the magnitude of the overall average error is between 0.0 and 0.10mm.

ROSE GO earned a score of 5 for this test.

Fine Flow Control

Using a pair of calipers, measure the height of the shortest spire on the top of the test print. Visually inspect for threads of material connecting the spires. Measure the shortest spire.

  • If the spires are less than 30mm long, assign a 0.
  • If the spires are greater than 30mm, but there is stringing between them, assign a 2.5.
  • If the spires are greater than 30mm long and there is no stringing between them, assign a 5.

ROSE GO earned a score of 4 for this test.

Fine Negative Features

Attempt to remove all the pins from their holes using fingers (no tools).

  • Record a “0” if no pins can be removed.
  • Record a “1” if 1 pin can be removed.
  • Record a “2” if 2 pins can be removed.
  • Record a “3” if 3 pins can be removed.
  • Record a “4” if 4 pins can be removed.
  • Record a “5” if all pins can be removed.

Five pins were removable from the test print. For this test, the ROSE GO earned a score of 5.

Overhangs

Inspect the overhang surfaces.

  • Record a “1” if the printer compiled the geometry but dropped loops and infill on the 15, 20, and 30 degree overhangs.
  • Record a “3” if only the 15 and 20 degree surfaces differ from the 45 degree overhang.
  • Record a “4” if only the 15 degree overhang differs from the 45 degree overhang.
  • Record a “5” if there the surface finish between all four overhang surfaces is equivalent.

ROSE GO earned a score of 4 for this test.

Bridging

Inspect for contact between bridges and the surface beneath each.

  • 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.

For this test, there are 5 bridges contact the surfaces beneath them. So ROSE GO earned a score of 5.

XY Resonance

Visually inspect the X and Y ringing features, illuminating the test print from the side to highlight any ringing captured in the print.

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”.

ROSE GO earned a score of 2.5 for this test.

Z-axis alignment

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.”

For this test, ROSE GO earned a score of 2.5.

Scoring

Sum the results of each section of the test protocol. The highest possible score is 30, indicating a very well-calibrated system.

Here’s a breakdown of ROSE GO’s results:

  • Dimensional Accuracy: 5 of 5 points
  • Fine Flow Control: 4 of 5 points
  • Fine Negative Features: 5 of 5 points
  • Overhangs: 3 of 5 points
  • Bridging: 5 of 5 points
  • XY Resonance: 2.5 of 2.5 points
  • Z-Axis Alignment: 2.5 of 2.5 points

Overall, the ROSE GO prototype scored a total of 28 out of 30 points.

And then we made a comparative table.

Source:

  • https://www.youtube.com/watch?v=Zvh3U8mChuo
  • https://www.youtube.com/watch?v=zoPfZK9tk4Q
  • https://www.kickstarter.com/projects/snapmaker/snapmaker-20-modular-3-in-1-3d-printers/posts/2509142

That's all for our first test on Autodesk / Kickstarter Test Print. Hope you enjoy it and hopefully after you receive ROSE GO, you can try it out on your own. I'm sure you'll have a lot of faith in ROSE GO.

 


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