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eBay impact tester vs DIY impact testing machine

Title: eBay impact tester vs DIY impact testing machine. Watch on youtube: https://youtu.be/EAomawFGWBs

With pendulum impact testing machine, we can see how the material resists to dynamic loads. The cost of DIY impact testing machine was 60$, but the main problem with it is the geometry of the hammer. I bought an analog impact tester from eBay; the cost is 15x bigger than DIY but 15x cheaper compared to European machines. Looks like 5.5J is too strong for 3D printing materials, but there are many other questions too. Is it usable? What is the accuracy? Is it finished? To be honest, it reminds me to Ender-3, which can be accurate 3D printer, but it needs some tinkering.

The machine I bought myself, this is not affiliate link, just link to store where I bought it:
https://www.ebay.com/itm/375079916417?var=644149301355

Big thanks to my Patreon supporters, who made these kind of investments possible.
https://www.patreon.com/mytechfun

About their support I mentioned at 9:27 - no info from them so far..

Chapters:
0:00 Introduction
1:22 What is impact test
3:51 Problem with DIY impact tester
5:30 How I bought it from eBay
8:11 About eBay impact tester
10:15 Breaking plastic
12:00 Evaluation of data
14:02 Another one?
14:26 Final thoughts

#3dprinting #impacttesting #impacttester #materialtesting

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