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 Ender3, 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...

Big thanks to my Patreon supporters, who made these kind of investments possible.
  / mytechfun  

About their support I mentioned at 9:27 after 1 week I got the answer: They have 2.75J weights, but they can't modify the holders.

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