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I need some help in making the cross. When memorizing the cross pieces and executing them blindfolded, should I imagine how the pieces move or just memorize the moves like an algorithm and then execute the memorised algorithm. I am finding it hard to track the f2l pair during the cross !:(
 
I need some help in making the cross. When memorizing the cross pieces and executing them blindfolded, should I imagine how the pieces move or just memorize the moves like an algorithm and then execute the memorised algorithm. I am finding it hard to track the f2l pair during the cross !:(
Two things. One, don't worry about your first pair if your still worrying about your cross and two, the way I memorize algs, is to remember how the pieces move so I would do that, especially since it easier to do it quickly.
 
Two things. One, don't worry about your first pair if your still worrying about your cross and two, the way I memorize algs, is to remember how the pieces move so I would do that, especially since it easier to do it quickly.
I also do the same thing. Instead of memorizing like D2 F R and etc. I just know that if I move a piece, where is other piece going to end up, so it is pretty intuitive and for tracking f2l pair. GO slow, after each turn, touch your f2l pair so you know that the pair is there!
Cheers!
 
My robotics team may be getting a 3D printer kit sometime this summer that I will have access to. My question is this: Would it be a copyright infringement if I printed cubes on it? Could I print cubes like the Zhanchi just as long as I didn't sell them? What if I designed my own cubes?
Thanks.
 
I had a question about my Zhanchi

i lubed and tensioned it
when I turn a layer to 45 degrees it can cut if I do an R' move
and can but well past 45

however, when i turn a layer 45 degrees i can't cut it when doing a regular R move
Any advice?
do i have it too right or loose or something?
 
I had a question about my Zhanchi

i lubed and tensioned it
when I turn a layer to 45 degrees it can cut if I do an R' move
and can but well past 45

however, when i turn a layer 45 degrees i can't cut it when doing a regular R move
Any advice?
do i have it too right or loose or something?
That's reverse corner cutting (i.e. cutting corners in the opposite direction). No cube can reverse corner cut as well as it can corner cut in the normal direction. It's perfectly normal for this to happen.
 
Would it be a copyright infringement if I printed cubes on it? Could I print cubes like the Zhanchi just as long as I didn't sell them? What if I designed my own cubes?
Thanks.

Depends where you live. In the UK there's something called the Private Use Exception, which is in place, for example, to allow music students to copy sheet music, etc.. I don't think copying cubes would be covered by this though, as Private Use Exception is largely for scholarly purposes only.

In the US, there is a similar policy called Fair Use. Again, fair use doesn't cover physical copies, more 'intellectual' copyright.

But it's a moot point really, because this is more a question of patent infringement than copyright.

I'd be very surprised if Dayan, Moyu, etc. challenged you. Firstly, they would have to figure out you've done something. If you make your own cube for yourself, how will anyone ever know? Secondly, they'd have to prove that your design was infringing on their design. It's a tricky and drawn out legal process.

You're only really at risk from prosecution from Seven Towns (who own the Rubik's Cube patent). They police this patent pretty aggressively but, again, they'd have to find out.

There was an interesting article in the Harvard Journal of Law and Technology calling for a revision to the US patent act to keep up with 'recent' advances in technology (digital printing has been around since the 80s). This is the best overview you'll get on the matter.

Short answer - it's patent infringement. Long answer - you're no more likely to be prosecuted than you are to be prosecuted for copyright infringement for recording a video off YouTube.
 
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