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3d printing multiple objects at once vs single object 3D printing (one-by-one) - same strength?

Title: 3d printing multiple objects at once vs single object 3D printing (one-by-one) - same strength?. Watch on youtube: https://youtu.be/sGPTkcVW5z8

Tags: 3dprint, strength test,

I was curious, if there is any difference in strength (layer adhesion) between parts printed one at the time and those printed with other parts at the same time. Advantage of multi part 3D printing is that we have start printing only once, and printer will do the rest. There are 3 disadvantages to this method: risk, same color, stringing.
My checklist and risky factors mentioned in the video (edited according to suggestions in comment):
- small contact area
- too big overhang
- too big bridging
- tall, thin objects
- are supports added where needed
- check printing parameters

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Test object used in the video can be downloaded from:
https://www.mytechfun.com/video/125

Contents:
0:00 Introduction
0:27 The theory
2:42 About layer adhesion
3:22 Preparing test specimens
4:32 Layer adhesion test
5:48 Results
5:59 Conclusions

#3dprinting

Download files:

gcode-for-analyzing.zip 1634.2 kB
vertical_d10.stl 868.6 kB [View»]