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 Post subject: Cube 321 - a bandaged Cube 21Posted: Sun May 30, 2010 2:33 pm

Joined: Sun Mar 11, 2007 3:11 am
Location: Oregon, USA
About a year ago I built a bandaged Square-1 variant with single, double, and triple width pieces. But I didn't unveil it due to endless problems with the laser-cut tiles I had used instead of stickers. They were too thick, they snagged on the puzzle's movements, they picked up fingerprints, they flaked off, and the glue kept showing through the tiles.

I recently built a second one (left) a stickered it with thinner PVC tiles I built on my 3D printer. Sorry, I neglected to use the same color scheme on the two puzzles (built a year apart) so it's hard to make direct comparisons.
Attachment:
File comment: Thin PVC tiles at left, thick acrylic tiles at right.

IMG_2838.JPG [ 170.57 KiB | Viewed 1416 times ]

As an added solving challenge I used an asymmetrical bandaging scheme. At the start, the green side is bandaged so the triple-width pieces are adjacent, allowing movement along only two cuts. The yellow side is bandaged with matching pairs diagonally opposite each other, allowing movement along three cuts.
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File comment: Green side

IMG_2840.JPG [ 166.28 KiB | Viewed 1416 times ]
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File comment: Yellow side

IMG_2841.JPG [ 177.49 KiB | Viewed 1416 times ]

At first it seems like the puzzle can't get very mixed up because most of the available cuts are at 90-degree angles from each other. But there are enough 30-degree angles to allow an occasional turn, at which point the puzzle can get really tough. You can reach the point where there's only one turnable cut per face, and it's hard to avoid getting stuck in perpetual loops.
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File comment: Two possible cuts at 90-degree angles.

IMG_2843.JPG [ 194.28 KiB | Viewed 1416 times ]
Attachment:
File comment: Two possible cuts at 30-degree angles.

IMG_2844.JPG [ 171.3 KiB | Viewed 1416 times ]
Attachment:
File comment: Only one possible cut.

IMG_2845.JPG [ 181.36 KiB | Viewed 1416 times ]

Even simple rearrangements can be difficult because of the bandaging.
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IMG_2846.JPG [ 150.08 KiB | Viewed 1416 times ]

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 Post subject: Re: Cube 321 - a bandaged Cube 21Posted: Sun May 30, 2010 2:37 pm

Joined: Mon Aug 27, 2007 3:50 pm
Location: Copenhagen, Denmark
lovely! This puzzle has been on my mind for quite a while.. actually since I got my first Sq1 back in 07

are you the first person to make this puzzle?

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 Post subject: Re: Cube 321 - a bandaged Cube 21Posted: Sun May 30, 2010 2:41 pm

Joined: Thu Sep 24, 2009 12:21 pm
Location: Chichester, England
That looks really nice, and such a good idea too!

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 Post subject: Re: Cube 321 - a bandaged Cube 21Posted: Sun May 30, 2010 3:02 pm

Joined: Sun Mar 11, 2007 3:11 am
Location: Oregon, USA
Doubleyou wrote:
lovely! This puzzle has been on my mind for quite a while.. actually since I got my first Sq1 back in 07

are you the first person to make this puzzle?

I haven't seen it done before, but I'm sure lots of people have thought of it. It's so simple that I've often wondered why it wasn't a common beginner mod, but I guess it just hadn't been popularized yet.

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 Post subject: Re: Cube 321 - a bandaged Cube 21Posted: Mon May 31, 2010 2:33 pm

Joined: Sat Jul 11, 2009 6:20 am
VeryWetPaint wrote:
Doubleyou wrote:
lovely! This puzzle has been on my mind for quite a while.. actually since I got my first Sq1 back in 07

are you the first person to make this puzzle?

I haven't seen it done before, but I'm sure lots of people have thought of it. It's so simple that I've often wondered why it wasn't a common beginner mod, but I guess it just hadn't been popularized yet.

Very Nice,

but i have a question about this great puzzle, how did you put the Glass or fiber glass on the top of the sticker without showing any glue or bond on it????

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 Post subject: Re: Cube 321 - a bandaged Cube 21Posted: Mon May 31, 2010 4:14 pm

Joined: Sun Mar 11, 2007 3:11 am
Location: Oregon, USA
Pinoycuber27 wrote:
but i have a question about this great puzzle, how did you put the Glass or fiber glass on the top of the sticker without showing any glue or bond on it????

There's no separate sticker; the back sides of the tiles are painted.

For the first set of tiles I painted colors onto the back side of 1.6mm clear acrylic sheets, then laser cut the sheets into tiles. The colored back side of the tile shows through when the protective film is peeled away. The acrylic sheet in this picture has been painted red on the back side. You can see the red color through the sheet when I peel away the blue film. (The blue film is always discarded.)
Attachment:
File comment: Protective film pulled away from clear sheet, painted red on the back side.

IMG_2847.JPG [ 169.84 KiB | Viewed 1166 times ]

Those acrylic tiles had all sorts of problems. They were too thick and uncomfortable when using the puzzle. Some tiles were discolored by the glue, so I had to take them off and make new ones with an added layer of primer to protect the paint.
Attachment:
File comment: Defective green tiles

blemished_tiles.JPG [ 261.44 KiB | Viewed 1166 times ]

I gave up on the acrylic tiles. Even after resolving the problems with the glue, they were still too thick and they picked up fingerprints.

For my second version I used a 3D printer that builds parts from thin layers of PVC about 168μm thick. I built a sheet of clear tiles 0.3 mm thick. Before painting they look like this...
Attachment:
File comment: 3D printed tiles attached to protective sheet

IMG_2848.JPG [ 139.06 KiB | Viewed 1166 times ]

At first the 3D-printed tiles are clear and colorless, but I painted the back side of the tiles and then attached the painted side to the puzzle so you could see the color through the tiles.
Attachment:
File comment: Attaching painted PVC tiles to puzzle.

IMG_2824.JPG [ 194.11 KiB | Viewed 1166 times ]

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