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| Re: Absolutely WOW ! [message #26722 is a reply to message #26719 ] Fri, 29 April 2011 04:40 UTC |
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Depends maybe shapeways also subdivides them first. And keep in mind that the resolution is maybe ok but it is still basically an inkjet spraying on powder so I wonder if it visually makes a difference in the end.
Take a look to my comparisson picture of the 2 grandpas next to each other and ignore the difference in contrast. If this theory is correct the light one was printed with uvw and the dark one with vertex colors. I honestly cannot tell the difference in texture quality...
See more of my 3D scanning/printing adventures here: http://3dpersons.com/ or statyou.com
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| Re: Absolutely WOW ! [message #26723 is a reply to message #26722 ] Fri, 29 April 2011 05:12 UTC |
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The issue looks like typical linear vs monitor gamma (or the complex version: lack of color profile). But hey, when even "professional" print shops shrug when you ask about getting the profiles so things match a bit better...
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| Re: Absolutely WOW ! [message #26725 is a reply to message #26724 ] Fri, 29 April 2011 05:47 UTC |
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Printers and monitors have an overlapping range of colours, but others are just out of gamut, so some colors never match, and maybe the range that matches is shifted to make room for all. And it gets trickier when the "paper" is gypsum and later it gets coated. We are talking about first or second generation inkjet tech with non photo "paper".
If nobody provides profiles or even basic tips about adjusments (or take care of them themselves), your best bet is "try and error" until you nail a reasonable color transform.
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| Re: Absolutely WOW ! [message #26726 is a reply to message #26725 ] Fri, 29 April 2011 06:25 UTC |
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Indeed. Another print I made at i.materialse thats not in the photos was a figure standing on a black platform.
I missed a part and they where friendly enough to select all of the platform and make it black. This black was more a mesh color and not a texture. The black platform was absolutely perfectly black. I think this points to what you are saying and that converting the texture to vertex perhaps also solves it since it by-passes color profiles all together..
See more of my 3D scanning/printing adventures here: http://3dpersons.com/ or statyou.com
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| Re: Absolutely WOW ! [message #26744 is a reply to message #26726 ] Fri, 29 April 2011 18:18 UTC |
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Hey guys,
Regarding the question about textures and colored vertices. We actually use both.
Best,
Robert
Robert Schouwenburg
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| Re: Absolutely WOW ! [message #26760 is a reply to message #25018 ] Fri, 29 April 2011 21:12 UTC |
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As Robert says, you can use both, but priority is given to textures, so you can place a logo or label on a vertex painted model. Both types use standard 24-bit RGB color. I tested CMYK JPEG and it showed a difference but no noticeable improvement in color gamut. Color may be converted to RGB before getting to the printer, but it turns out not to matter because the color accuracy is just not very good.
Transferring textures to vertices is normally only done when meshes must be edited for printing after mapping is applied. It can be handy when you want to print your old projects without re-mapping.
Keep in mind that when looking at models on-screen with auto-generated UVs you might see pixelated artifacts that won't be in the print. More info on that in this thread. I suspect there was nothing wrong with tristan_bethe's model to begin with...they were just looking at it in Magics. If the Shapeways preview render is distorted though, that will show in the print.
Aaron - 40westdesigns.com/blog
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| Re: Absolutely WOW ! [message #34726 is a reply to message #34697 ] Tue, 20 September 2011 20:51 UTC |
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I had the chance to test this new finish quite early and I can show you how the two whites compare:
The Shapeways label is for reference.
I think this is really the white we were waiting for.
Attachment: White13.JPG
(Size: 135.69KB, Downloaded 348 time(s))
So many things to design, so little time...
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| Re: Absolutely WOW ! [message #34728 is a reply to message #25018 ] Tue, 20 September 2011 21:01 UTC |
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Absolutely.
What's your opinion about the strength with new process vs the old?
I have some solid sculptures with the old process and the feel is strong and heavy - (i coated them with 1-2 coats of clear epoxy spray, so that could also contributed to the overall strength)
http://www.3Dizingof.com
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| Re: Absolutely WOW ! [message #34729 is a reply to message #34728 ] Tue, 20 September 2011 21:15 UTC |
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Honestly I did not test the strength. The main reason is that my models are quite small and with no obvious weak point (spheres). I could try to make them drop until they break, but I am reluctant to destroy the models and I am unsure the result would be easy to interpret...
All I can say is that I did not notice any obvious strength difference during normal use (that is without stressing the models).
So many things to design, so little time...
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| Re: Absolutely WOW ! [message #34995 is a reply to message #25018 ] Fri, 23 September 2011 16:12 UTC |
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Try Pete's Shapeme .. i'm not your boss.. 
http://www.3Dizingof.com
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