Only thing bas that he was very casual about the dangers of high hydraulic pressure. In reality i is something to be very worried. If you think there is nothing to it google "hydraulic injection injury".
Pekka
You should check out some of his other videos. He does the coolest home shop/lab projects and experiments I have ever seen. My jaw was literally hanging open (in amazement) when I watched some of his videos. After watching a lot of his videos I would say he comes across as someone who has a very good understanding of the risks involved but he doesn't make a point of broadcasting a safety message in every video. Watch his video on making aerogel with supercritical methanol for some truly scary stuff.
You made a good point about hydraulic injection injuries. I saw a man who developed this problem in both legs after jet washing his newly laid patio wearing flip flops. The cement residue driven into his skin gave him multiple non healing painful ulcers on both legs. He ended up having both legs amputated a few years later.
I'm not a big fan of him. For the most part he's a rich guy that made his money with a tech company and uses it to buy surplus scientific equipment, pull it apart, then reassemble it as something worse and claim he's built something. There's alot of people doing interesting stuff in that realm of 'goofy home science' but they tend not to produce great videos or writings, and tend to be focussed on specific areas of interest.
I quite like this person's videos even if they're unedited and stretched.
videos Mostly about vacuum tubes but there's some neat stuff about high vacuum systems and he provides information that's not just pulled off of tacky 'Maker' blogs.
It's something I was getting interested in about half a year ago, but after camping out on ebay for months to try assemble a high vacuum system I got fed up and sold what i'd collected. The guy that bought my turbomolecular pump kept in contact via ebay and his plans are to try and build a turbopump from scratch via EDM. He said he'd keep me updated if it ever goes anywhere, and I really hope it does.
At some point, when I can afford a milling machine, I might take a punt at building an analytical balance though. I took a couple broken ones apart and it seems quite doable.
My real dream has been to build an infra-red spectrometer, but without a high vacuum system it'd cost more in buying the beam splitters than it would just finding one second-hand. But then the cost of a high vacuum system would probably more than those both combined.
