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White Detail Surface oxidation [message #42696] Wed, 25 January 2012 06:52 UTC Go to next message
avatar masked  is currently offline masked
Messages: 3
Registered: August 2010
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Junior Member
So my WD model arrived about 10 hours ago--first time that I've tried this material. The surface of the model was smooth, slightly waxy, and had an apparent light shine under light. Within the time frame in which I've had it out of its delivery bag, the surface has been exposed to a slightly moist environment of ~25 degrees C under a compact fluorescent bulb, and has developed a "gritty" surface that has the texture of sandstone over the exposed surface. The underside of the surface exposed (visible internal details) has been unchanged. The model also has a distinct odor whereas one was not noticeable before.

Does anyone know the chemical process that this is undergoing?
Re: White Detail Surface oxidation [message #42726 is a reply to message #42696 ] Wed, 25 January 2012 16:42 UTC Go to previous messageGo to next message
avatar Youknowwho4eva  is currently offline Youknowwho4eva
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Registered: September 2008
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Interesting. I'll ask around to see if anyone knows.


The Mad Moder
michael@shapeways.com
Re: White Detail Surface oxidation [message #42728 is a reply to message #42726 ] Wed, 25 January 2012 16:50 UTC Go to previous messageGo to next message
avatar ana  is currently offline ana
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Registered: October 2008
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Hey, that's sounds weird for sure.

Our materials lead has actually pinged the folks at the production facility to see what might be going on.

If it's causing a problem for the quality of your prints you should definitely reach out to service@shapeways.com to see if they can help.


Community Manager | Shapeways

Re: White Detail Surface oxidation [message #42777 is a reply to message #42696 ] Thu, 26 January 2012 05:07 UTC Go to previous messageGo to next message
avatar masked  is currently offline masked
Messages: 3
Registered: August 2010
Go to all my models
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Thanks! That'd be great.
Also, I put the model back into its bag overnight to find, as of about 2 minutes ago, that the gritty texture had gone down slightly (though there still was some remaining), and the scent had intensified.
Re: White Detail Surface oxidation [message #42870 is a reply to message #42777 ] Fri, 27 January 2012 11:43 UTC Go to previous message
avatar stop4stuff  is currently offline stop4stuff
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Registered: June 2010
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It could be that the support material (uncured WD) dried out when in the open and then re-moistened slightly when in the bag overnight - I've never experienced this as I usually wash the model in a warm, mild caustic soda solution soon arfter delivery.

It will be interesting to find out the cause though even if just for future reference.


 
   
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