Edgecutting

[Cubingcubecuber]

I think this has been thought of before, but it should be better known. Edge cutting is if the U layer can turn when the M slice is misaligned, and if the M slice can turn when the U layer is misaligned. There are two types:

Forward: Misalign the U layer, then try an M' (any direction of the U layer or M slice will still be the same type)

Reverse: Misalign the M slice, then try a U (any direction of the M slice or U layer will still be the same type)

For forward edgecutting, one side might cut better than the other depending on which finger you use for M slices

 

[Nmile7300]

I would just like to point out that the direction of the U layer does actually matter for the "Forward" cutting. This is because an "edge cut" is just a forward corner cut and a reverse corner cut happening at the same time. Depending on which way you misalign the U layer, you will either have a larger
forward cut and a smaller reverse cut, or a smaller forward cut and a larger reverse cut. Therefore since we know that you can do larger cuts with forward corner cutting than with reverse, which way you misalign the U layer will change how much can be cut.

 

[Cubingcubecuber]

I would just like to point out that the direction of the U layer does actually matter for the "Forward" cutting. This is because an "edge cut" is just a forward corner cut and a reverse corner cut happening at the same time. Depending on which way you misalign the U layer, you will either have a larger
forward cut and a smaller reverse cut, or a smaller forward cut and a larger reverse cut. Therefore since we know that you can do larger cuts with forward corner cutting than with reverse, which way you misalign the U layer will change how much can be cut.

‘Confused reaction’ @pjk

If I start to do a U’ and then do an M’, it is the same as if I start to do a U and then do a M’, if I start to do a U and then do an M, and if I start to do a U’ and then do an M

 

[Nmile7300]

If I start to do a U’ and then do an M’, it is the same as if I start to do a U and then do a M’, if I start to do a U and then do an M, and if I start to do a U’ and then do an M

Uh no it is not. You can't cut the same amount with a U' and an M' as you can with a U and an M'. Believe me, I tried it on multiple cubes.

 

[Cubingcubecuber]

Uh no it is not. You can't cut the same amount with a U' and an M' as you can with a U and an M'. Believe me, I tried it on multiple cubes.

Might be the finger you use for M’
With cornercutting U’ L’ is the same as U R
A cube is symmetrical, so there is no reason why it should be different

 

[Nmile7300]

Do I have to submit video proof or something? Just trust me, I tried I multiple times using the same finger for M' each time. I explained what was going on in my first post.

 

[Cubingcubecuber]

Do I have to submit video proof or something? Just trust me, I tried I multiple times using the same finger for M' each time. I explained what was going on in my first post.

If you misalign the U layer clockwise and do an M’, it forward cuts on the left, and reverse cuts on the right
If you misalign the U layer counterclockwise and do an M’, it forward cuts on the right, and reverse cuts on the left

Spoiler: Understand?

Spoiler: Do you?

Spoiler: Reasoning

The cube is symmetrical(except for imperfections and magnet placement in some cubes). Therefore, any cut can be mirrored on an L/R axis and still be the same. This won’t change the direction on the M slice, but it will inverse the U move. Because the mechanism is spherical, and the tracks are circular we can use degrees. If I misalign the U layer by 15˚ and do an M' it will forward cut 15˚ and reverse cut 15˚. If I mirror that and misalign. it by -15˚, it will still forward cut 15˚ and reverse cut 15˚, but it will be on the opposite side. There is no reason why it should be any different.

Also you would want to switch fingers for the M slice for an absolutely objective comparison, but it doesn't really matter. Also what cube are you using, because that could give me some insight into your problem

Spoiler: About my reasoning

Sorry if my reasoning made no sense, I don't know that much about this type of math, so I probably used incorrect vocabulary

 

[Owen Morrison]

I just tested what @Nmile7300 said, and doing a U' M' has quite a bit more corner cutting than a U M'.

 

[Nmile7300]

Ok, so I think the reason behind what was going on is the fact that I used the same finger, which somehow pushed the momentum away from a certain side so when I did U' M' it cut less. That means I was wrong, my whole "smaller reverse cut larger forward cut" was baloney, but I made sense in my mind. I think most people would use the same finger for both so you may want to add something saying to alternate fingers.

I just tested what @Nmile7300 said, and doing a U' M' has quite a bit more corne cutting than a U M'.

Did you do your M slice with your right hand? If so that would make sense as I did it with my left hand and the opposite happened.

Also what cube are you using, because that could give me some insight into your problem

I use a bunch of different cubes, Valk, WRm, Gts2m, and some 4x4s.




In conclusion, I stand corrected. I think it has to do with what finger you use.

 

[Owen Morrison]

Yes I was using my right hand, I tried my left hand and the opposite happened.