| Can anyone tell me the cause of this SLS imperfection? [message #51159] Wed, 11 July 2012 18:14 UTC |
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Firstly id just like to say this part wasnt printed by Shapeways, so i havent added it in the 3d printing topic.
Id just like a second opinion.
The imperfection only appears on the same side of all the 10 prints.
There are small areas where there was no powder to begin with, or the laser hasn't hit it?
Is it possible to get bubbles during the process? over-heating the the material?
For reference, the part in the picture has a diameter of 10mm
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boop
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| Re: Can anyone tell me the cause of this SLS imperfection? [message #51196 is a reply to message #51159 ] Wed, 11 July 2012 23:25 UTC |
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That almost looks like they added some sprue during the printing process, and then snapped them off during cleaning.
Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
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| Re: Can anyone tell me the cause of this SLS imperfection? [message #51216 is a reply to message #51159 ] Thu, 12 July 2012 08:47 UTC |
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Thanks for the reply.
They were printed within a box without sprue, so doubt this is the reason.
Some of them have a depth of just under 1mm
Thanks though.
boop
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| Re: Can anyone tell me the cause of this SLS imperfection? [message #51226 is a reply to message #51216 ] Thu, 12 July 2012 14:05 UTC |
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If the imperfections were in the same place on all the print, it points to something on your meshes.
Bill Bedford
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| Re: Can anyone tell me the cause of this SLS imperfection? [message #51227 is a reply to message #51159 ] Thu, 12 July 2012 14:14 UTC |
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To me, it looks like unsinthered material which can be caused by the laser needing to be calibrated, or impurities in the material.
The Mad Moder
michael@shapeways.com
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| Re: Can anyone tell me the cause of this SLS imperfection? [message #51276 is a reply to message #51159 ] Fri, 13 July 2012 13:50 UTC |
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@ Bill , No the holes are in various places.
@Paul, thats what it looks like to me, they are reprinting them on a different machine to see if it reproduces the flaws.
Thanks for the replies.
boop
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