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Toy Car and Pocket Reaper [message #23998] Fri, 18 February 2011 01:12 UTC Go to next message
avatar WillLaPuerta  is currently offline WillLaPuerta
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I made a VW Beetle as an example for my students then decided to make a toy out of it. The wheels stuck in my print, but I put it in the freezer for a while and gave them a good wiggle or two they came free and now roll beautifully.

http://www.shapeways.com/modules/udesign/utils/openfile.php?id=212130&f=photos/photo33706.jpg

I keep looking at it and giggling, for some reason. And I can't stop rolling it back and forth to see the wheels turn. I'm even more amused by this than by the Fokker I made during the last class.

Here's the underside.

http://www.shapeways.com/modules/udesign/utils/openfile.php?id=212130&f=photos/photo33707.jpg

Also got my Pocket Reaper. Wee little reaper to slip into your shirt pocket. based on a design I originally made for a shirt.

http://www.shapeways.com/modules/udesign/utils/openfile.php?id=190890&f=photos/photo33708.jpg

Is that a Reaper in your pocket, or are you just happy to see me?

http://www.shapeways.com/modules/udesign/utils/openfile.php?id=190890&f=photos/photo33710.jpg

This is actually my second print of this. The first version was too large and didn't leave enough space in my pocket for a pen. Hope to get it painted sooner or later.


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Re: Toy Car and Pocket Reaper [message #24028 is a reply to message #23998 ] Fri, 18 February 2011 16:50 UTC Go to previous messageGo to next message
avatar ana  is currently offline ana
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Hey Will!

You say you put the Beetle in the freezer? Interesting, why did that help the wheels to loosen up?


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Re: Toy Car and Pocket Reaper [message #24042 is a reply to message #24028 ] Fri, 18 February 2011 20:35 UTC Go to previous messageGo to next message
avatar WillLaPuerta  is currently offline WillLaPuerta
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Things tend to contract when they're cold and expand when they're hot. I just hoped the axles and the holes in the car would contract away from each other. It seemed to loosen them up enough that I could get them moving.

I've tried it on three prints and it's worked on two of them, so I figure it's at least worth trying.


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Re: Toy Car and Pocket Reaper [message #24043 is a reply to message #24042 ] Fri, 18 February 2011 22:04 UTC Go to previous messageGo to next message
avatar Kaetemi  is currently offline Kaetemi
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WillLaPuerta wrote on Fri, 18 February 2011 20:35

I just hoped the axles and the holes in the car would contract away from each other.
Theoretically, everything would contract by the same factor, in the same direction, so the size caused by the freezing would not really make a difference.
More likely either the contraction and expansion caused stuck loose powder to loosen up a bit more. Or the cold made the axes less flexible, making it easier to apply force to loosen them.

[Updated on: Fri, 18 February 2011 22:42 UTC]


Kaetemi
Re: Toy Car and Pocket Reaper [message #24062 is a reply to message #24043 ] Sat, 19 February 2011 15:39 UTC Go to previous messageGo to next message
avatar WillLaPuerta  is currently offline WillLaPuerta
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I suspect that the geometry of the objects involved might make things a bit more complex than you're assuming, but I don't know enough about this subject to be absolutely certain of any of this. All I am certain about is my wheels roll and I'm happy about it!


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Re: Toy Car and Pocket Reaper [message #24065 is a reply to message #24062 ] Sat, 19 February 2011 18:25 UTC Go to previous messageGo to next message
avatar stop4stuff  is currently offline stop4stuff
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Freezing makes the parts contract by the same %, but as the material is porous, the air inside shrinks by a bigger % lose powder get compressed, and as the model warms again the parts become free of each other... or is it that as the parts freeze, water vapour condenses and pushes parts free?

Either way, that's one cool VeeDub Smile

[edit] Pocket Reaper is very cool too!


[Updated on: Sat, 19 February 2011 18:26 UTC]

Re: Toy Car and Pocket Reaper [message #24070 is a reply to message #24065 ] Sat, 19 February 2011 21:13 UTC Go to previous messageGo to next message
avatar WillLaPuerta  is currently offline WillLaPuerta
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Thanks. It's palm sized!

http://www.shapeways.com/modules/udesign/utils/openfile.php?id=212130&f=photos/photo33831.jpg

I don't normally describe my work this way, but I have to admit it's pretty cute.


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Re: Toy Car and Pocket Reaper [message #24086 is a reply to message #24070 ] Sun, 20 February 2011 23:41 UTC Go to previous messageGo to next message
avatar ana  is currently offline ana
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@WillLaPuerta Cute is definitely the right word.

Thanks for the post-processing insight, guys. Wink


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Re: Toy Car and Pocket Reaper [message #24105 is a reply to message #23998 ] Mon, 21 February 2011 18:44 UTC Go to previous messageGo to next message
avatar lensman  is currently offline lensman
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SWF in the freezer, full colour sandstone in the microwave... whatever's next? Shocked

Glenn


Glenn ------ My Website Third Dimension Jewellery
Re: Toy Car and Pocket Reaper [message #24117 is a reply to message #24105 ] Mon, 21 February 2011 21:34 UTC Go to previous messageGo to next message
avatar Magic  is currently offline Magic
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Quote:


SWF in the freezer, full colour sandstone in the microwave... whatever's next?


I don't know since White Detail is not dishwasher proof...
Very Happy


So many things to design, so little time...
Re: Toy Car and Pocket Reaper [message #24122 is a reply to message #24117 ] Mon, 21 February 2011 23:10 UTC Go to previous messageGo to next message
avatar lensman  is currently offline lensman
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Magic wrote on Mon, 21 February 2011 21:34

Quote:


SWF in the freezer, full colour sandstone in the microwave... whatever's next?


I don't know since White Detail is not dishwasher proof...
Very Happy


Haha... from experience?

Glenn


Glenn ------ My Website Third Dimension Jewellery
Re: Toy Car and Pocket Reaper [message #24124 is a reply to message #24105 ] Tue, 22 February 2011 00:17 UTC Go to previous messageGo to next message
avatar stop4stuff  is currently offline stop4stuff
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lensman wrote on Mon, 21 February 2011 18:44

SWF in the freezer, full colour sandstone in the microwave... whatever's next? Shocked

Glenn



http://www.shapeways.com/forum/images/message_icons/icon4.gif Very hot water to bend Detail materials if you have asbestos fingers and don't mind a bit of pain Wink

Re: Toy Car and Pocket Reaper [message #24125 is a reply to message #24124 ] Tue, 22 February 2011 01:19 UTC Go to previous messageGo to next message
avatar lensman  is currently offline lensman
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stop4stuff wrote on Tue, 22 February 2011 00:17

lensman wrote on Mon, 21 February 2011 18:44

SWF in the freezer, full colour sandstone in the microwave... whatever's next? Shocked

Glenn



http://www.shapeways.com/forum/images/message_icons/icon4.gif Very hot water to bend Detail materials if you have asbestos fingers and don't mind a bit of pain Wink




Ouch!


Glenn ------ My Website Third Dimension Jewellery
Re: Toy Car and Pocket Reaper [message #24145 is a reply to message #24125 ] Tue, 22 February 2011 17:46 UTC Go to previous messageGo to next message
avatar ana  is currently offline ana
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Ouch, yes! But also pretty amazing to hear of some of the unexpected post-processing techniques people have unlocked.

Do any of you guys know any other methods that people have discovered recently?


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Re: Toy Car and Pocket Reaper [message #24147 is a reply to message #23998 ] Tue, 22 February 2011 18:46 UTC Go to previous messageGo to next message
avatar rawkstar320  is currently offline rawkstar320
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Cool project! I am going to try the freezer idea today. My most recent design SHOULD work according to the design rules, but its stuck...


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Re: Toy Car and Pocket Reaper [message #26900 is a reply to message #23998 ] Tue, 03 May 2011 16:18 UTC Go to previous message
avatar WillLaPuerta  is currently offline WillLaPuerta
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I finally got around to painting and photographing my Pocket Reaper:

http://www.shapeways.com/modules/udesign/utils/openfile.php?id=190890&f=photos/photo39599.jpg
http://www.shapeways.com/modules/udesign/utils/openfile.php?id=190890&f=photos/photo39600.jpg


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