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 Post subject: Watch for Rolling Boulders...
PostPosted: Thu Jun 24, 2010 1:20 am 
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Location: Louisiana, US
Teaser:
http://www.youtube.com/watch?v=ro4C3mTVXzk

I promised Oskar I would post review of his Boulder once I completed assembling it. As you can probably tell, I chose to use the classic aka Japanese color scheme. More to come later, and I just got a brand new hi-def camera from Best buy (photos and videos shown here are from my cell phone, shrunk for file size).
Attachment:
Big Boulder, slightly scrambled, no caps.jpg
Big Boulder, slightly scrambled, no caps.jpg [ 77.17 KiB | Viewed 1747 times ]

Attachment:
Big Boulder, complete!.jpg
Big Boulder, complete!.jpg [ 88.37 KiB | Viewed 1747 times ]

Attachment:
solved frontside.jpg
solved frontside.jpg [ 102.21 KiB | Viewed 1747 times ]

Attachment:
scrambled backside.jpg
scrambled backside.jpg [ 98.03 KiB | Viewed 1747 times ]

Attachment:
showing off.jpg
showing off.jpg [ 110.94 KiB | Viewed 1747 times ]

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Thu Jun 24, 2010 1:32 am 
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That looks great! Makes me want it. Although with my compulsive ways, I'd had to buy it fully in black and then sticker it!

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Thu Jun 24, 2010 7:32 am 
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I always liked Oskar's puzzles including his cast puzzles (I can't solve the CAST EQUA!!! :evil:) ...but this, although the shape looks good and the puzzle looks beastly, is defiitely not one of my favorite puzzles because it is excessive.

:) Greg :)

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Thu Jun 24, 2010 7:54 am 
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RubixFreakGreg wrote:
I always liked Oskar's puzzles including his cast puzzles (I can't solve the CAST EQUA!!! :evil:) ...but this, although the shape looks good and the puzzle looks beastly, is defiitely not one of my favorite puzzles because it is excessive.

:) Greg :)

I agree, the Big boulder is way less excessive then the somethingminx in your avatar :lol:

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Thu Jun 24, 2010 8:08 am 
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PuzzleMaster6262 wrote:
I agree, the Big boulder is way less excessive then the somethingminx in your avatar :lol:


At least I don't plan on prototyping it... I don't like Yottaminxar eclipses :lol: :lol:

:mrgreen: Greg :mrgreen:

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Mon Jun 28, 2010 4:41 am 
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Well, as it turns out, after monkeying around with some of the settings, my Nikon Coolpix L110 camera makes some excellent macro photography :mrgreen:
Attachment:
whole puzzle800.jpg
whole puzzle800.jpg [ 135.38 KiB | Viewed 1481 times ]

By the way, the following three photos are not cropped in; that is the actual native 4000x3000 images scaled down. I had my lens focused less than 1 inch away from the objects for some shots!
Attachment:
detail1.jpg
detail1.jpg [ 132.57 KiB | Viewed 1481 times ]

Attachment:
detail2.jpg
detail2.jpg [ 105.37 KiB | Viewed 1481 times ]

Attachment:
detail3.jpg
detail3.jpg [ 125.67 KiB | Viewed 1481 times ]

And at the native pixels resolution of "detail3.jpg", you can see the actual dirt forming on the surface of the yellow pieces after my partial solve:
Attachment:
dirthappens.jpg
dirthappens.jpg [ 89.9 KiB | Viewed 1481 times ]

Not too shabby for an Under-$300 camera that also shoots 720p video among other things - this camera is truly amazing... :shock:

Speaking of dust, does anybody know of a safe way of removing it from SLS plastic? :?

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Mon Jun 28, 2010 6:02 am 
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stardust4ever wrote:
you can see the actual dirt forming on the surface of the yellow pieces after my partial solve

I think the problem here is the rough/porous surface you get with 3D printed parts. Is there some kind of plastic spray coating you could apply to make the surfaces smooth?

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Mon Jun 28, 2010 7:29 am 
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did you happen to take a picture of the core?
if so, could we see it?

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Mon Jun 28, 2010 8:28 am 
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I didn't actually get the new camera until after I was finished assembling the boulder. Oskar has loaded some pics of the partially assembled Boulder on Shapeways. The core looks somewhat like a whiffle ball.
http://www.shapeways.com/model/83730/big_boulder____400.html
Image
Image
Image

As for the dirt, I am going to try using a kneeded eraser to get some of it off. It's an art medium that somewhat resembles stick-tak, and is specifically designed to gently remove graphite/charcoal from drawing paper without damaging the surface. I'm afraid to use an industrial clear-coat or sealant spray on the puzzle, as this might fuse the pieces together or otherwise bind the puzzle. There is also the possibility of staining the plarts. A workable fixative might work; these are normally used to prevent smudging of drawings by trapping down existing particles, so I guess it would also act as a preventative barrier. At any rate, I have no plans on using my expensive Big Boulder puzzle as a "guinea pig" for sealant testing. If the kneaded eraser can remove some of the dirt, that's good enough for me.

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 Post subject: Re: Watch for Rolling Boulders...
PostPosted: Mon Jun 28, 2010 4:14 pm 
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Joined: Fri Feb 08, 2008 1:47 am
Location: near Utrecht, Netherlands
SLS is very, very good at picking up dust. With black puzzles, it doesn't matter as you can't tell any ways. With white puzzles, it is a problem. I always sand my white puzzles sightly, then seal them with a clear spray lacquer. This does a decent job at keeping them looking nice.

I don't think kneading eraser will do much good. Personally, I'd be afraid that it might itself stick to WSF rather than take dirt off. In my experience, once WSF is dirty, you're never going to get it clean again.

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