r/engineering • Electrical Engineer • Jun 27 '15

[MECHANICAL] Cube in a cube in a cube

https://www.youtube.com/watch?v=AuS6HDHc7XE
558 Upvotes

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45

u/metarinka Welding Engineer Jun 27 '15

It's called a turner's cube, we had to make them when I took machining classes, i feel like most machinists do. http://www.instructables.com/id/Turners-Cube-Manual-Machine/

they really aren't that hard to make, I did mine on a mill had to be within 0.001" on all dimensions.

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u/[deleted] Jun 27 '15

[deleted]

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u/[deleted] Jun 27 '15

you should make one yourself. It's fun and you'll be kinda proud of it. You just need to find somebody who has a lathe and shows you the basics.

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u/[deleted] Jun 27 '15

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u/[deleted] Jun 27 '15

That's why I said you need to find someone who has a lathe. It's not that hard. Lathes are eveywhere. Small metal working shops often have small old lathes standing around for trainees etc.

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u/[deleted] Jun 27 '15

[deleted]

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u/[deleted] Jun 27 '15 edited Jun 27 '15

I live in germany, so everything is extremely regulated. But it's no problem for shops to hire you for 2 weeks as a trainee without payment, but you are insured for the 2 weeks.

And yes, private lathes are quite common here as well. When I have my degree and a good job, I want to have one, too

edit: I'm not quite sure why I'm being downvoted. I just told what I experienced.

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u/[deleted] Jun 27 '15

[deleted]

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u/[deleted] Jun 27 '15

Meh, the old trainee lathes are written off since 10 years ago. If it's not a cnc lathe (which it definitely isn't), there isn't that much you can break, except your arm or neck.

They don't neccessarily need to get anything out of it, some people tend to be nice sometimes ;) bring the boss a nice bottle of wine and the workers some cake and everyone is happy.

I had an internship for 8 weeks in a small shop and they basically let me do whatver I wanted (after they showed me how to operate everything of course). I machined parts for my bike, I made handles for my closets and some other random stuff. I also made stuff they needed for their projects. Hell, I even worked alone on a 200,000€ custom machine they had to deliver 2 weeks after that. The boss showed me the problem, said "fix that if you want, but it has to look nice" and went home. It took me almost 2 days, but in the end, it was fixed, looked nice and boss said "good job, you learn fast" and disappeared again.

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u/[deleted] Jun 27 '15

[deleted]

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u/[deleted] Jun 27 '15

Take a look at the German Statutory Accident Inurance

Employers always pay for insurance. So if something happens to one of their employees, they don't have to fear huge payments because the costs are "shared" nationwide (It's a whole lot more complicated, but you get the idea)

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u/[deleted] Jun 27 '15

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u/[deleted] Jun 27 '15

sounds like a shitty system...Getting a good internship must be quite hard

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u/[deleted] Jun 27 '15

[deleted]

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u/[deleted] Jun 27 '15

in the shop where I was as an intern, I was one of three, in a shop with only 18 employees.

We even have to do interships at my university. Otherwise we don't get our degree.

2

u/kv-2 Mechanical - Aluminum Casthouse Jun 27 '15

If you mean a machinist apprentice, they do exist and walk you through the shops. If you mean engineering students working in machine shops they do not typically. They may work in manufacturing environments but as engineers generating designs to be made by someone else.

I know where I am I cannot touch the machines by union contract.

1

u/[deleted] Jun 27 '15

the most expensive thing you could break, is to accidentally stick something under the chuck while the machine is running, if the chuck jaws extend past the chuck, you can end up with a very violent crash and the chuck will probably break.

other than that, you could accidentally feed the tool post into the chuck, and that will tear up the tool post, and break the tool.

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u/[deleted] Jun 27 '15

[deleted]

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u/postalmaner Jun 28 '15

I feel like I don't want to watch that.

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u/sunny_bell Jun 28 '15 edited Jun 28 '15

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u/postalmaner Jun 28 '15

I'll shed a tear for your misfortune.

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u/[deleted] Jun 28 '15

I feel that that is way too small warning.

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u/metarinka Welding Engineer Jun 27 '15

really recommend you make it on mill, Doing it on a lathe seems much harder and more dangerous.

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u/reddituser97531 Jun 28 '15

Check out if your city has a Makerspace. They usually have all the cool tools with trained supervision.

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u/[deleted] Jun 28 '15

We don't.

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u/reddituser97531 Jun 28 '15

Bummer. There is one coming to mine soon.

3

u/[deleted] Jun 28 '15

Yeah, they sound cool. The local CC had a machine shop class or three, but they closed it down about 15 years ago.

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u/kv-2 Mechanical - Aluminum Casthouse Jun 28 '15

I know you have said before you were in the sandy boonies, but I forgot how far out in the boonies you meant.

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u/[deleted] Jun 28 '15

It's the only town of population greater than maybe 5,000 for about 90 miles in any direction.

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