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 Post subject: Bumpoid 3x3x5
PostPosted: Sun Jan 19, 2014 8:29 am 
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This puzzle is a collaboration between Simon Edgar (oxymoronicuber) and myself. Simon had the idea for this puzzle and had started to design it in Maya but had some problems, so he asked me to help. I did a quick and dirty design in SketchUp to prove the concept, then I decided to try the design in Inventor just to get some experience (and it is also very easy to fillet and shell the parts in this program). Then I exported the pieces to stl and imported them into SketchUp so I could do some final tweaks on the pieces and arrange them for a Shapeways print.

The base puzzle for this design is the C4U cubic 3x3x5. This puzzle has to first be truncated on two faces by 3.5 and 6mm - luckily, the 6mm cut is just clear of the screw head.
Attachment:
File comment: Cut faces
Cut Faces.jpg
Cut Faces.jpg [ 589.32 KiB | Viewed 1509 times ]

Lesson learned No.1: Glue in the caps on the affected pieces before doing the cuts.

Next, glue the extensions onto the faces, making sure that you use the correct ones, because they all look very similar.
Attachment:
File comment: Assembly
Assembly.jpg
Assembly.jpg [ 580.68 KiB | Viewed 1509 times ]

Lesson learned No.2: Put some identification marks on the pieces so you don't accidentally start gluing the pieces on the wrong place.

When I get to the last layer, I realise that all these pieces are short by 2.5mm :shock: To fix this I had to glue some 2.5mm thick ABS sheet onto the wrong pieces, which actually looks OK on the assembled puzzle.
Attachment:
File comment: Pieces
Pieces.jpg
Pieces.jpg [ 422.3 KiB | Viewed 1509 times ]

How could this happen? Well, one of my sketches in Inventor was wrong, and I did not re-check the pieces in SketchUp. After all, how could a program like Inventor be incorrect:oops:

Lesson Learned No.3: Just because a program like Inventor costs thousands of pounds, doesn't stop GIGO (Garbage In = Garbage Out)!

After glueing on all the pieces, I have this:
Attachment:
File comment: Assembly done
Assembled.jpg
Assembled.jpg [ 424.5 KiB | Viewed 1509 times ]

I used 3mm "tabs" to glue the mainly hollow pieces onto the cube. But remember that although 3mm looks plenty big on the computer screen, it's not much in the real world, and this gluing was pretty fiddly.

Lesson learned No.4: Draw out the sizes of critical stuff onto paper to see how they really look.

I decide to use gold stickers (from Oliver) which look really nice against the black:
Attachment:
File comment: Finished 1
Bumpoid 3x3x5 (1).png
Bumpoid 3x3x5 (1).png [ 4.47 MiB | Viewed 1509 times ]
Attachment:
File comment: Finished 2
Bumpoid 3x3x5 (2).png
Bumpoid 3x3x5 (2).png [ 5.01 MiB | Viewed 1509 times ]
Attachment:
File comment: Mid Turn
Bumpoid 3x3x5 (3).png
Bumpoid 3x3x5 (3).png [ 4.55 MiB | Viewed 1509 times ]
Attachment:
File comment: Scrambled
Bumpoid 3x3x5 (4).png
Bumpoid 3x3x5 (4).png [ 5.11 MiB | Viewed 1509 times ]

The pictures don't do justice to how nice these stickers look and I am very happy with the finished puzzle. Simon is building his own using powder silver stickers, I'm sure that he'll post pictures here soon.

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sun Jan 19, 2014 8:39 am 
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:D The gold stickers are looking good indeed. I am having second thoughts now! :roll:

Gus has put a lot of work into this and I want to thank him for taking it on for me.
I have another idea I am trying to work on which is very close to Dan's Heaven & Hell Cuboids, that also involves the 3x3x5 as a base, but don't hold your breath!

Can't wait to get the parts and make this baby...

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sun Jan 19, 2014 8:53 am 
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Wow, this is a fantastic puzzle! Just another one of your great extension designs.

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sun Jan 19, 2014 9:43 am 
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This calls for mass production! so awesome! Cheers for the both of you. :D

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sun Jan 19, 2014 12:21 pm 
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Thanks guys for the comments. And I forgot, for Andreas:
Weight = 138g, Size = 22.5 x 22.5 x 26.5 mm

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sun Jan 19, 2014 5:08 pm 
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This is awesome, I'd love one of these! :)

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Mon Jan 20, 2014 12:02 am 
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Gus wrote:
When I get to the last layer, I realise that all these pieces are short by 2.5mm :shock: To fix this I had to glue some 2.5mm thick ABS sheet onto the wrong pieces, which actually looks OK on the assembled puzzle.
I know this pain :)
Look at the middle of this post to see where I thought 12mm but designed 10mm, and had to do some major recovery work for those 2mm!

Looks great!

Dave

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Mon Jan 20, 2014 12:33 am 
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Thank you Gus for the images and the measurements.
I guess there was not enough space for truncating the core puzzle on the top or bottom face as well?

Andreas


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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Mon Jan 20, 2014 3:25 am 
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Andreas Nortmann wrote:
I guess there was not enough space for truncating the core puzzle on the top or bottom face as well?
The truncations were done in 2.5mm increments (+1mm for the Shapeways pieces). Any less than this and it would have been difficult to see the differences in the sizes of the pieces. So, the next truncation would have been 8.5mm which would have cut into the screw holding on the centre. It may have been possible to file down the screw head or replace the screw with a flat head rivet ...

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Wed Jan 22, 2014 1:02 pm 
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Location: next to grenoble , in france
awesome mod :shock:
if this mod are mass produced sometimes I promise to buy one !

but , just a little question : can this cube have parity ? ( I mean compare to the normal 3x3X5)


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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sat Feb 08, 2014 3:09 am 
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Sorry for the Bump 8-)

Here is my version in the silver metallic finish stickers from Oliver...

@youngretrocube - I have not had parity (yet) except normal cuboid stuff.

Thanks again to Gus for his help on this.


Attachments:
Bumpoid03.jpg
Bumpoid03.jpg [ 179.39 KiB | Viewed 769 times ]
Bumpoid02.jpg
Bumpoid02.jpg [ 181.65 KiB | Viewed 769 times ]
Bumpoid01.jpg
Bumpoid01.jpg [ 177.33 KiB | Viewed 769 times ]

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sat Feb 08, 2014 3:30 am 
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Awesome!! :D

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 Post subject: Re: Bumpoid 3x3x5
PostPosted: Sat Feb 08, 2014 7:48 am 
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It looks good with the silver stickers. I'll put this up on my Shapeways shop when I get around to it.

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