Making your own impact tester

So, a bit of a story...

I was watching this video on trying to build 3d printed objects by using half layer offsets...

...and got halfway through when I saw the YouTuber test his products with what seemed to be a homemade Charpy-esque impact tester.

5:38 in the above video

That homemade impact tester is something we've been talking about in our summer camps as a hypothetically simple thing to build, but our discussions tend to be fairly abstract and general - not at all specific as to plans that could be followed. This, however, looks to be something fairly specific and even branded by CNC Kitchen's blue and white logo.

So I went searching and came upon this video by CNC Kitchen that shows a homemade tensile/compression tester at about 8:15, a three-point bend tester at 10:45, and the same impact tester at 12:10.

So onward I went to find plans for the various testers.

I did find a video showing how to make the tensile/compression tester.

...and another for the 3-point bend tester.

...but I wasn't able to find a video for how to make CNC Kitchen's impact tester. Luckily, the impact tester's plans are available online.