Engineering a Professional Grinding Arbor
388K views · Sep 12, 2025 · Science & Technology
Comments · 558
@MariusHornberger · 1 year ago · pinned
Thanks, Stefan (@CNCKitchen), for all the Slow-mo footage. Let us know what you think about it.
217
@nikostsatsis9478 · 1 year ago
This dude makes exponentially better things in every video
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@shmoffshore1337 · 1 year ago
Please no music going forward. We all love the machine sounds and your down to earth and not flashy engineering style. Don't change - your are doing good
467
@mentiras_xox · 1 year ago (edited)
only german overengineering could produce a 40 minute video on making some bolt-on sticks. i'm at <a href="https://www.youtube.com/watch?v=XMScDYHgAVI&t=98">1:38</a> and i'm pretty sure i won't skip a second of it.
166
@mrjspeed · 1 year ago
People complain about anything these days. Music was like ~20 seconds worth of b-roll overlay. You do you Marius. Music was fine and to me added a little dimension to the intro.
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@FVT-tn8ji · 1 year ago
Please never stop making these kinds of videos, I could watch them forever!! You're a genius and it's a real pleasure to watch you problem-solving, Marius!
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@GeorgeC.bladesmith · 1 year ago (edited)
So, I'm a knife maker, so I have a lot of experience with hardening. First, don't put it in water - it's too harsh and fast, buy hardening oil. Second, before tempering, remove the oxides after hardening so you can see the tempering colors - find tables of what tempering colors should look like by your steel and try to guess by eye. Third, get a hardness tester (old - for a new restoration video) or a new one (more expensive) or the cheapest option (but not very accurate) are files with a certain hardness, according to which you will determine the hardness of the surface by scratching.
74
@WoodCreation-m1u · 2 months ago
This is the kind of shop-built tool that can rival commercial equipment. The precision and machining quality are outstanding!
@Michel-nb7ob · 2 weeks ago
I watch a lot of videos like this and I’ve been following Marius since he was a teenager. I’m always blown away by his level and his projects. But sometimes, it's so fast that I feel it's more like a demonstration than a sharing of knowledge.
@ketsu_pl · 1 year ago (edited)
It’s somewhat ironic that I started following you because of the woodwork and now you almost explicitly work with metal 😅 but no worries, it’s still an awesome content even if I won’t replicate any of it
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@andreasmenz1748 · 1 year ago
Reading "Made in W. Germany" on the bit holder. Apparently it stood the test of time! 😊
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@ZaneWBuxton · 1 year ago
The foley work at <a href="https://www.youtube.com/watch?v=XMScDYHgAVI&t=933">15:33</a> is impeccable :)
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