[Help Thread] 7x7x7 Discussion

[Vulosity]

The screw is un-adjustable. I'd glue the cap on.

 

[Zaxef]

Alright, I hope you guys are right.. I don't want to mess up such an expensive cube :/

 

[Zaxef]

Alright so I glued the green cap on.. but now the green layer is slightly harder to turn, and makes a little squeeking noise?

Uhg..

 

[Kenneth]

Hehe... it will hopefully disappear after some grinding

Too bad I did not see this post before you fixed it because I know what the real trouble is: the "screew" is not compleatly strait and when you turn that side it pushes the centrecap out. To fix it you have to straiten the screew, I did it by palcing a screewdriver on it that I pushed to the side, holding the top with the other hand and was using a bit of force until it was OK... that also made the side smoother to turn.

Another thing, this tread should rather be in the hardware area, I move it to there.

 

[Zaxef]

Hehe... it will hopefully disappear after some grinding

Too bad I did not see this post before you fixed it because I know what the real trouble is: the "screew" is not compleatly strait and when you turn that side it pushes the centrecap out. To fix it you have to straiten the screew, I did it by palcing a screewdriver on it that I pushed to the side, holding the top with the other hand and was using a bit of force until it was OK... that also made the side smoother to turn.

Another thing, this tread should rather be in the hardware area, I move it to there.

Yes .. I realized this after the yellow center started popping out too and I just just straightened the screw.. Oh well, the green side just takes like ... maybe 10-20% more force to turn.. It's not a big deal really..

 

[Hadley4000]

Okay, for future reference. When you glue on center caps, put on a tiny dot of glue on the corners opposite from eachother diagonally. That way, if you ever need to take it off, you can slip an X-Acto under one of the non glued corners, and pop it off.

 

[Mike Hughey]

I had a problem with a center cap popping off fairly often (about once per two or three solves) on my 7x7x7, and I solved it by gluing it on with Elmer's white glue. I've used Elmer's on my Chinaminx with such success, I figured it should work well on the 7x7x7 too. It sticks on plenty nice enough to stop the popping, and it should be pretty easy to pry it up if I ever want to get inside for some reason - much easier than with super glue.

And I've never noticed any of the sides of my 7x7x7 being different, so if I have a screw that's not straight, it can't be all that bad. My 7x7x7 turns REALLY nice - it's possibly my nicest-turning puzzle.

 

[KubeKid73]

7x7 Last Two Centers Help

I've been searching everywhere. The only things that I found that could potentially help are with adjacent centers. I solved all the centers except for two opposite ones, and I'm at the very last piece. I have to switch one and that's it. The x is the one that I need to solve, the o's are solved pieces.
ooooo
ooooo
ooooo
ooooo
oxooo
Is there an algorithm to solve these? I found a 2x2, 3x3, and 4x4 cube solver where you put in what the cube looks like and it gives you an algorithm to solve it, but I couldn't find one for the 7x7.

 

[Dene]

Firstly I recommend solving the centers so that you have adjacent ones left at the end. Secondly, the same algorithm that you use to solve the last two adjacent centers also works for opposite. You will just have to do extra long turns.

 

[KubeKid73]

Okay. Thanks. And I know now that I need to solve them so they're adjacent. I just thought that at least one person would have a tutorial for opposite centers. Lol.

EDIT: I can't believe I missed this:
"In these examples, A is the slice that both our pieces to be swapped are originally on, and B is the slice it lands on after we turn the F face. You can also switch opposite layer pieces with these algs by making the A/B into half turns. While it's useful in some situations, we recommend avoiding opposite centers except for the first two."
And I had a problem with the algorithm. I didn't understand it, and then I noticed it says, "Click on either picture to watch the alg performed." I really don't read enough.

 

[wing92]

depending on how they're situated you could move the bad piece from one of the sides to another corner, along with a whole row. it's hard to explain, but i'll give it a shot. this is assuming the L and R sides are the ones you're working on. the x's need to switch.

LEFT
oooxo
ooooo
ooooo
ooooo
ooooo

RIGHT
ooooo
ooooo
ooooo
ooooo
oxooo

turn the second layer from the top (i don't know notation for the extra layers of a 7x7) so that the bad edge from the left side is on the front, along with its whole row of o's. then do F2 and you have two adjacent centers that need to be fixed. do the alg you need, then do F2 again and turn that row back into the left side. i hope that made sense

 

[Gparker]

Great video, helped me in gabbosoft especially.

 

[Stefan]

the same algorithm that you use to solve the last two adjacent centers also works for opposite. You will just have to do extra long turns.

Sure? I don't know what alg he uses, but I use something like this (last two centers on L and U):
3L 2D 3L' U 3L 2D' 3L'
(I mean inner slice turns)

And I know now that I need to solve them so they're adjacent.

No you don't.

 

[KubeKid73]

I used the algorithm from the V-Cube site.

 

[Feanaro]

Use this video, it has an algorithm that is really helpful, and explains everything really well.
http://www.youtube.com/watch?v=WhZKTFQ_-7s

 

[Dene]

the same algorithm that you use to solve the last two adjacent centers also works for opposite. You will just have to do extra long turns.

Sure? I don't know what alg he uses, but I use something like this (last two centers on L and U):
3L 2D 3L' U 3L 2D' 3L'
(I mean inner slice turns)

Use a better algorithm then

 

[qqwref]

Yeah, Niklas-type algs are always the best IMO. Not only do they involve only L/R slice moves and U moves, but the basic alg only affects the U and F faces so it's really easy to see what's going on.

 

[Am1n-]

Another possabillity;
Do them intuitivly, that seems to work for me ...

 

[KubeKid73]

I do it all intuitively. The last time that I solved it (which was the second time I solved it.) I did it in rows/columns (instead of a 3x3 cross, then the corners of the 3x3 center and then just messing around until I got it) and I didn't have a problem.

 

[clarkehawkinson]

7x7 speed help?

I have been cubing for about a year and just got a 7x7 v cube. I average around 12 to 15 minutes a solve. For solving i use centers, slice matching edges, re group centers, pair up the last four edges, c-f2l and a four look last layer. Any help to get my time under 10 minutes?
(and i do know that my wording for solving is weird)