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Glazed Ceramic - Wave Espresso Cup [message #29983] Thu, 30 June 2011 18:42 UTC Go to next message
avatar pittance  is currently offline pittance
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Registered: March 2010
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My very first test order in glazed ceramic arrived today (ordered on the 21st May but also packed with a Bowie)

Unfortunately I'm not as happy as I'd hoped to be with the result...

The model is an espresso cup about 5cm high with a pattern of ripples over the surface that are generated by an implementation of the 2D wave equation.

I used a random collection of oscillators to make ripples spread over the surface; they reflect from the top and bottom but can go all the way around.

I chose a version of the model with I hoped would be a good mix of amplitudes of ripple to see what kind of surface detail I could expect to get.

index.php?t=getfile&id=9719&private=0

The model (rendered using my non-existent Blender skills) is next to the printed cup. The image above is the roughest side, with the most large ripples - you can make out the intended pattern but it's a bit submerged in the roughness of the surface. The stepping on the handle is very clear.

index.php?t=getfile&id=9720&private=0

This is the smoother side, with only small ripples, here the rough surface makes it hard to tell that it should be smooth.

index.php?t=getfile&id=9721&private=0

The base, which should be flat with the dished area in the centre, is very rough but it's not visible normally. The cup sits flat on a table.

I'd hoped to make a set of co-creators from this but I don't think I'd get many orders with these as product photos. I'd also not feel really happy to sell it at this level of quality.

The examples on the front page did make me hope that this would work but, they seemed much smoother than this. I'm not too upset, it's an experimental process and on that basis I've got what I wanted since this was an experimental order, but I'm not sure I'll order anything else.

Is this the quality that we're supposed to get from glazed ceramic?

Chris

Re: Glazed Ceramic - Wave Espresso Cup [message #29985 is a reply to message #29983 ] Thu, 30 June 2011 19:48 UTC Go to previous messageGo to next message
avatar thefuturefuture  is currently offline thefuturefuture
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wow! i am shocked by the results. your printed cup looks nothing like the render! i am also waiting on a ceramic piece that i ordered in may. my excitement level has totally dropped after seeing these results!
sorry to see the poor quality!


thefuturefuture
Re: Glazed Ceramic - Wave Espresso Cup [message #29987 is a reply to message #29985 ] Thu, 30 June 2011 21:07 UTC Go to previous messageGo to next message
avatar pittance  is currently offline pittance
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I know what you mean, this was the order I have probably been most excited about so far because it's not just decorative it should actually do something and I'd hoped to be able to use it every day.

The let down wasn't enjoyable, especially since for a while I've been writing a blog post about the Processing code that makes the model and setting up to open source the wave equation code I used for it. I'll probably still do that but this result will make it less fun...

My son likes it so it will get used for his babyccino at the weekend; we'll see how well it handles the dishwasher next.
Re: Glazed Ceramic - Wave Espresso Cup [message #29988 is a reply to message #29985 ] Thu, 30 June 2011 21:12 UTC Go to previous messageGo to next message
avatar berrynaut  is currently offline berrynaut
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Oh no! That is nowhere as smooth as the test product photos implied. I can understand the rippled surface not showing because of the fine detail, but the overall finish seems very rough ... I just received an email saying my ceramic order is about to be shipped, so will be interesting to see how it looks.
Re: Glazed Ceramic - Wave Espresso Cup [message #29990 is a reply to message #29983 ] Thu, 30 June 2011 21:16 UTC Go to previous messageGo to next message
avatar dizingof  is currently offline dizingof
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This is BAD Confused

Looks like it was printed with low resolution... you can see clearly the thick layers ... Thick layers = low details

Or.. perhaps a polishing step was ignored before glazing?..


I had hopes for this material.. was about to order a complex vase from my collection but definitely will wait to see what's up

Did you contact support? they should know of this .



Please let us know what went wrong..




oh btw, just a minute ago i saw your link on my Google analytics of your website, about cup-a-day - awesome work !













http://www.3Dizingof.com
Re: Glazed Ceramic - Wave Espresso Cup [message #29993 is a reply to message #29990 ] Thu, 30 June 2011 21:40 UTC Go to previous messageGo to next message
avatar pittance  is currently offline pittance
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From the video they posted on the process they don't polish they just brush off loose powder...

I haven't contacted support yet although I probably will do so, mainly to find out if this is the quality they were expecting from the process.

Also: I'm not sure if the cup-a-day thing was aimed at me or not but that (while cool) wasn't anything I did - I couldn't manage one a day, this one took weeks Smile
Re: Glazed Ceramic - Wave Espresso Cup [message #29995 is a reply to message #29993 ] Thu, 30 June 2011 21:56 UTC Go to previous messageGo to next message
avatar bitstoatoms  is currently offline bitstoatoms
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Hey guys,

We are looking into this,

Our product lead Nancy will discuss with the supplier tomorrow to find out what has happened.

Thanks for sharing, looking forwards to seeing the Bowie the Bunny pictures. Smile


Duann Scott

Re: Glazed Ceramic - Wave Espresso Cup [message #29996 is a reply to message #29993 ] Thu, 30 June 2011 22:05 UTC Go to previous messageGo to next message
avatar dizingof  is currently offline dizingof
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pittance wrote on Thu, 30 June 2011 21:40

From the video they posted on the process they don't polish they just brush off loose powder...

I haven't contacted support yet although I probably will do so, mainly to find out if this is the quality they were expecting from the process.

Also: I'm not sure if the cup-a-day thing was aimed at me or not but that (while cool) wasn't anything I did - I couldn't manage one a day, this one took weeks Smile


my bad - your cup render looks much like the ones on this link so i thought it was your project Smile

http://cunicode.com/one-coffee-cup-a-day/





http://www.3Dizingof.com
Re: Glazed Ceramic - Wave Espresso Cup [message #30047 is a reply to message #29983 ] Fri, 01 July 2011 13:56 UTC Go to previous messageGo to next message
avatar nancyliang  is currently offline nancyliang
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Hey there! I'm the Product Lead of Materials. The stepping you see is indeed a bit strange. As this is a new process for Shapeways (and the manufacturing industry!) we are still learning as we go, and this type of feedback is very helpful. Have you tried emailing customer service (service@shapeways.com)? They usually respond quickly and will give you good feedback, reprints etc.

Since we've printed your piece, we actually have learned and changed a few things in the printing process. First, we found a new way to clean the print heads after printing. This ensures better quality prints. The resolution here is actually the same resolution as all our other pieces, including the example pieces you saw during the introduction of ceramics. Second, we've been experimenting with printing in different directions (print orientation, ie laying the cup down flat or right side up), and we think we have a better grasp on how to achieve better prints by place it in different directions in the tray. Last, we are learning about different ways of glazing and that improves with every print.

Anyway, the point is we'd like to give your model another go. Please contact customer service (service@shapeways.com) so this issue/reprint gets tracked properly in our system, and we'll get you another model.

One thing though, the ripples in your model is a bit too detailed to be well represented in the mug. Do you think you can send another file with a bit more definition? I think that will help us better show the detail. Here is an example (Tip #4 in our design rules) that shows the detail loss in the glazing process: http://www.shapeways.com/topics/udesign/design-rules/ceramic s/fillin.jpg

Anyway, please contact Customer Service and let them know whether you'd like a free reprint of this model, or a voucher to print a revised model with more details?

Thanks for helping us improve our process!

Best,
Nancy



Product Manager
Twitter: @nliang
Re: Glazed Ceramic - Wave Espresso Cup [message #30051 is a reply to message #30047 ] Fri, 01 July 2011 15:26 UTC Go to previous messageGo to next message
avatar pittance  is currently offline pittance
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Nancy, thanks for the reply; I haven't mailed service yet but I will do so soon.
Re: Glazed Ceramic - Wave Espresso Cup [message #30211 is a reply to message #29983 ] Tue, 05 July 2011 10:07 UTC Go to previous messageGo to next message
avatar maartje  is currently offline maartje
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Chris and I have contact now Laughing
Re: Glazed Ceramic - Wave Espresso Cup [message #31597 is a reply to message #30211 ] Tue, 26 July 2011 20:35 UTC Go to previous message
avatar pittance  is currently offline pittance
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I've just taken delivery of the re-printed version of my espresso cup and I'm very pleased to say that it's excellent!

index.php?t=getfile&id=10188&private=0

The smoothness and definition of the shapes are much better than the first one and the glazing is uniform - I'm very happy with it.

I've now got some valuable information on what waviness can come out on cups like this - in fact all but the very smallest are visible which is better than I'd expected. I'll use this to tune the amplitude & frequency of the waves I put in.

As always thanks to all at Shapeways for this happy result; this is what I'd hoped for from this process and I'd be happy to order more...

I think I need to improve my cardboard and tracing paper lightbox a bit though...

Chris


 
   
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