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Forum: 3D Printing
 Topic: Ceramic wall size
Ceramic wall size [message #97173] Wed, 27 August 2014 13:30 UTC
avatar Valkenburger  is currently offline Valkenburger
Messages: 2
Registered: May 2013
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Hi all!

I'm currently working on a design in ceramics and things would look way better with my shape (a wire-like shape) ending in a point with a rounding of around 3 millimetre. Unfortunately the minimum wall size for ceramics is 6 millimetre in my case.

My question: If I would make a regular pencil design on a scale that respects the wall size: Could I end it with a point below the 6 millimetre?

I understand it might break but since my object are only to look at I'm willing to take that risk. The length of the ending of my wire that wouldn't be at least 6 millimetre would be 3 centimetres at most.

Also out of curiosity: Does anyone know how breakable is that 6 mm to begin with? Would it be tight for a sculpture?

If that makes sense, thanks for your help!

Valkenburger
 Topic: Polished Nickel Steel not so polished anymore
Polished Nickel Steel not so polished anymore [message #93587] Tue, 08 July 2014 06:29 UTC
avatar josgall  is currently offline josgall
Messages: 3
Registered: September 2013
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I have been ordering the same Polished Nickel Steel Model since November. Over 50 of these same models @ 16.75 each. I have noticed that in the last month the Polished Nickel Steel is not as polished and shiny as it used to be when it arrived. The build up that I have to remove from the crevices of the model with a pick has also increased. I have contacted support with two separate incidents about it and I am getting answers like "sorry for the inconvenience" etc. I just want to know if the process has been modified in the last month or two for the Polished Nickel Steel and if it has, when it will be put back to the way it was. I already know something has changed. It's visible in my photos and I have never had a defect until this last month. I just want some confirmation here so I can start shopping around for other options if that's what I need to do. I want my models to be how they were in Nov-Mar again! What happened??!!!!
 Topic: Zprinter 650 color problem - white side
Zprinter 650 color problem - white side [message #88309] Wed, 23 April 2014 10:15 UTC
avatar 3Print  is currently offline 3Print
Messages: 1
Registered: April 2014
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Hi, We have zprint 650.
We'r useing VisiJet® PXL material.

After 3d print We get model with white side.
index.php?t=getfile&id=57750&private=0

When printer works from right to left, white side is showing on left side of model.

Can u tell me what Should we do to fix this problem ?

We did :
- auto alignment
- new material
- new heads
- witness part

everything is not working.

Check photo.

Ty for help.

 Topic: tracking parts
tracking parts [message #87257] Fri, 04 April 2014 02:11 UTC
avatar ChristopherCordingley  is currently offline ChristopherCordingley
Messages: 8
Registered: February 2010
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The polishing step for WSF seems like a good opportunity for parts to get mixed up. How are similar looking parts kept track of when their slight differences are specific to each customer?

Thanks!
-Chris
 Topic: Waste material
Waste material [message #87005] Mon, 31 March 2014 16:02 UTC
avatar gautham  is currently offline gautham
Messages: 1
Registered: March 2014
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Hello,

Currently there is an increasing number of private 3D printing users in the world. I am one of the many 3D enthusiast who loves to create new products that are only limited by ones imagination. Like many I too face the problem with a high percentage of waste material. This led me towards filament extruders. I realized that there is a huge room for improvement in current filament extruders. I would like to explore this opportunity. Hence, would like your help and support by filling the below survey.

http://goo.gl/7zuz8P

I really appreciate your help.
Thank you.
 Topic: Movable Fixing
Movable Fixing [message #86611] Sun, 23 March 2014 14:30 UTC
avatar duram  is currently offline duram
Messages: 18
Registered: October 2013
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Some holes to pass an axle to turn free are very tight and not moving, what is
the best way to polish and increase it? heat? drill?

When printing movable parts what is the distance between them I have to draw to print tight but not totally
hard to move so i´ll need polishing later?

The material is the basic plastic you have (white)

[Updated on: Sun, 23 March 2014 14:31 UTC]

 Topic: Lead time of Elasto-Plastic
Lead time of Elasto-Plastic [message #86260] Sat, 15 March 2014 17:55 UTC
avatar abite2  is currently offline abite2
Messages: 17
Registered: June 2013
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Hi,

Recently, I noticed the lead time of Elasto-Plastic was changed to 16 days.
As I remember, it was around 8~10 days. Is it seriously 16 days?

Joe.

[Updated on: Thu, 20 March 2014 06:58 UTC]

 Topic: 3D printing & 3D Models | Manan Interactive
3D printing & 3D Models | Manan Interactive [message #85926] Fri, 07 March 2014 13:23 UTC
avatar mananinteractive  is currently offline mananinteractive
Messages: 1
Registered: March 2014
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The world is expanding and so the technology. Nowadays the processes to create a product starts with a 3D model. Depending on the requirements of the plannings, manufacturers starts the prototype process. This process contains mainly of 3D printing. Te parts of the product are printed with a 3D printer, which is developed by an another manufacturer. You can print everything you want with a 3D printer. It's an innovation.

Nowadays we almost can print everything from almost all existing raw materials e.g. plastic, metal, aluminum. Manan Interactive is specialized in 3D design and 3D printing for private, companies, manufacturers etc. Depending on your 3D model, we calculate all details for end result overview to make you sure the quality is perfect and a low price. Manan Interactive is flexible, so we always communicate with our customers before we start.

[Updated on: Fri, 07 March 2014 13:46 UTC] by Moderator

 Topic: Warping in an older FD model
Warping in an older FD model [message #85832] Wed, 05 March 2014 13:53 UTC
avatar tebee  is currently offline tebee
Messages: 382
Registered: December 2010
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I recently had an enquiry for one of my older models and I remembered that I'd done a test print of them almost a couple years ago in FD. Infact this one I had problem with the first print, and had to get get Shapeways to do a reprint. The original thread is here. https://www.shapeways.com/forum/index.php?t=msg&goto=478 07

However, when I went to get the model, I opened the box it's in and found it had warped considerably.

https://lh5.googleusercontent.com/-10mKUa_Ppcw/UxcpsFhhz8I/AAAAAAABaL0/V4CgviDoC8g/s800/IMG_9229.JPG

https://lh5.googleusercontent.com/-Rd-Lfa95xNc/UxcpNZcs-QI/AAAAAAABaLU/_zMxXnUw2Z4/s800/IMG_9225.JPG

https://lh6.googleusercontent.com/-5B_KK2QZtn0/UxcpQojQW5I/AAAAAAABaLc/ZD2pfTOdmWc/s800/IMG_9226.JPG

https://lh5.googleusercontent.com/-75YLzdlpeos/UxcpXbTgJ4I/AAAAAAABaLk/Iph9SGeIMW8/s800/IMG_9227.JPG

https://lh4.googleusercontent.com/-kdFQDlbQd3Y/UxcpooU2n9I/AAAAAAABaLs/HwgpqMSHV8c/s800/IMG_9228.JPG

Any idea what could have caused this ? The plastic now feels soft and almost rubbery to the touch. As far as I know all that has happened to this is was washed in alcohol to remove the wax and was then photographed and stashed in a plastic air-tight container to keep it clean. It's been in an unheated room in rural France so might have suffered freezing, but would not have had excessively high temperatures.

Oddly enough the original faulty model was in the same box and that has suffered the same problems, but another loco produced at the same time seems fine.

Tom

[Updated on: Wed, 05 March 2014 13:55 UTC]

 Topic: Printing with spures (intakes) for raw brass
Printing with spures (intakes) for raw brass [message #85359] Mon, 24 February 2014 13:39 UTC
avatar jkiss56  is currently offline jkiss56
Messages: 6
Registered: July 2010
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Hello,
I would like to print railroad models using raw brass. In opposite of jewelry, I have very limited options where to put the intakes for bras poured into mold.
(I don't want to lost fine details on visible surface)

I want to design the model with intakes at specified places. The question is, how to instruct the shapeways staff to use intakes defined by me and not a random one.
(A used a competitive service and they put the intake in the middle of visible side destroying the details :-) )

index.php?t=getfile&id=52892&private=0

 Topic: Overglazing 3D printed Ceramics
Overglazing 3D printed Ceramics [message #85308] Sun, 23 February 2014 19:32 UTC
avatar tonyguntermann  is currently offline tonyguntermann
Messages: 1
Registered: December 2011
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Has anyone refired a 3d printed ceramic piece with an overglaze?
I think a gold overglaze added to a white 3d printed piece would look really cool.
Also, does anyone know the specs of the glaze Shapeways uses on the ceramic pieces?
 Topic: PTFE
PTFE [message #84918] Fri, 14 February 2014 20:44 UTC
avatar HazelwoodModels  is currently offline HazelwoodModels
Messages: 51
Registered: April 2013
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Member

Has anyone checked into PTFE as a material for printing, where a bearing surface is required
for moving parts?

It would certainly open a lot of opportunities for the modeller.

[Updated on: Mon, 24 February 2014 18:50 UTC]

 Topic: Any talk of a WSF upgrade?
Any talk of a WSF upgrade? [message #81430] Tue, 17 December 2013 04:05 UTC
avatar ChristopherCordingley  is currently offline ChristopherCordingley
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I would love to know if one may come soon...only higher res with tigher clearance?

Thanks!
-Chris
 Topic: 3" diameter hard plastic cylinder/plug
3" diameter hard plastic cylinder/plug [message #81349] Sun, 15 December 2013 23:34 UTC
avatar GeologyRocks  is currently offline GeologyRocks
Messages: 1
Registered: December 2013
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Trying to find something that I can put into a cup holder in my truck and screw a tablet mount into. 3D printing seems like the most logical option outside of cutting some wood or finding scrap metal.

Is there a 3D printing plastic hard enough that when cured will allow me to mount a bracket to it with small screws?
How difficult would it be to create something like this? I don't have a 3D printer so I would require someone to print it for me.

[Updated on: Sun, 15 December 2013 23:35 UTC]

 Topic: Findings for jewellery
Findings for jewellery [message #80747] Sat, 07 December 2013 22:09 UTC
avatar foeer  is currently offline foeer
Messages: 2
Registered: February 2013
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Hi all,

Does shapeways offer findings for jewellery or is this something people print when they upload the model? I see a lot of findings in the gallery pictures, but not sure how it works.

Has anyone tried printing findings? Is stainless steel best? Do they have any visible stratification?

Cheers!
 Topic: Dying/colouring/anodising alumide or other metals
Dying/colouring/anodising alumide or other metals [message #80743] Sat, 07 December 2013 21:38 UTC
avatar foeer  is currently offline foeer
Messages: 2
Registered: February 2013
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Hi all, has anyone tried colouring alumide? I'd like to produce a fairly simply range of jewellery with the strength, durability and weight of metal, but with a surface that is coloured and not too obviously metal.

Ideally I'd love to powdercoat (I've tried spraypaint but not durable at all), so where can I do this online? I'm in Australia so preferably options that have cheaper shipping!

Cheers!!
 Topic: Does it make any sense for sprues to be thicker than the pieces they Join?
Does it make any sense for sprues to be thicker than the pieces they Join? [message #80287] Sun, 01 December 2013 16:55 UTC
avatar tebee  is currently offline tebee
Messages: 382
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I've just had another rejection of a WSF print because a 2mm long sprue joining two 0.8 mm parts is also only 0.8 mm thick although it is 1 mm wide.

Now I know rules is rules and this is strictly speaking outside the design guidelines, but in this case what purpose would be served by making it thicker ? It's still going to have a week point where it joins the 0.8mm thick parts on either side.

For me it's more of a problem as I have many designs that were done before the guidelines changed, but it seems that now 60-80% of my rejections are because of sprues.

I'm beginning to think that the solution may just be to eliminate the sprues, alright it will cause more work for the people cleaning and packing the models, and some smaller parts might get lost, but it would eliminate the rejections - I think it might be the lesser evil.

[/Rant]

Tom
 Topic: Premium Sterling Silver and pointy lapel pins
Premium Sterling Silver and pointy lapel pins [message #80211] Fri, 29 November 2013 19:20 UTC
avatar mdavisstudios  is currently offline mdavisstudios
Messages: 11
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I tried ordering a lapel pin -->(https://www.shapeways.com/model/997627/c1-pin-print2.html) in polished sterling silver in the past, and was a bit disappointed that the pin part didn't come out that pointy, that is pointy enough to be nice to clothes if worn often or as pointy as a typical commercially produced lapel pin.

Can I expect a premium silver lapel pin to come out nice and pointy?

Or anyone have experience/tips producing lapel pins with shapeways?

thanks!
 Topic: Help with Ceramic Shot Glass
Help with Ceramic Shot Glass [message #79950] Tue, 26 November 2013 23:53 UTC
avatar JGarrett  is currently offline JGarrett
Messages: 26
Registered: January 2013
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The model shown here is a shot glass. I have designed the wall thickness of this particular model according to the ceramic wall guidelines but the embossing and the engraving (text and fonts shown) are only 1.5mm. Does anyone have experience printing engravings and embossings at this scale in ceramic. Was you're print rejected, etc.or can I (and others) get away with it? The overall height of my model is 76mm (3 inc) and the outer wall is 4.5mm. Thanks, J

index.php?t=getfile&id=45963&private=0

 Topic: 3D Printing for objects from fluid simulator?
3D Printing for objects from fluid simulator? [message #78072] Sun, 03 November 2013 18:03 UTC
avatar sun_ray  is currently offline sun_ray
Messages: 3
Registered: May 2013
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Hello together,
I have a nice object to 3D-print.
Its an object thats created by the fluid siumulator of Blender. When I check the resulted mesh, I found self-intersecting faces.
Is this a problem for the 3D-printer?
Does anybody knows how i can get rid of these lettle intersections?
I have actuall really no idea how to solve this.
please help!!!
sun-ray
 Topic: Color change of dyed plastic
Color change of dyed plastic [message #77444] Thu, 24 October 2013 09:42 UTC
avatar Ina_  is currently offline Ina_
Messages: 2
Registered: March 2012
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My brief experience with the dyed plastic, coral red polished in particular, is that dark spots will appear. I've already had this problem on delivery (Shapeways was kind enough the replace the faulty pieces) but am noticing now that the red items will develop spots over time. I store the items in a closet but have already removed the items from the closed plastic bags they are delivered in because I thought keeping them in a closed bag might be the cause of the black spots...

Also, is it possible the red plastic becomes darker over time (not in spots but just the piece in general) ?

Has anyone else experienced these problems with the dyed plastic as well ?
Many thanks in advance for your input.
 Topic: ZPrinter® 850 for larger models
ZPrinter® 850 for larger models [message #76200] Sat, 05 October 2013 23:19 UTC
avatar CuttingEdgeFlutes  is currently offline CuttingEdgeFlutes
Messages: 19
Registered: November 2011
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Does anyone know if shapeways is planning to get the larger bed printers from Zcorp? It would be really useful to be able to print larger models.
 Topic: 3D printers in hongkong or singapore
3D printers in hongkong or singapore [message #75128] Fri, 20 September 2013 10:47 UTC
avatar NELSONNCO  is currently offline NELSONNCO
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i am looking for professional companies based in hongkong or singapore that can do 3D printing for me.

these will be used for the food industry


nelsonnco
 Topic: Sandstone and warm objects
Sandstone and warm objects [message #74824] Sun, 15 September 2013 00:16 UTC
avatar luizandre  is currently offline luizandre
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Hi, I would like to know if the sandstone material melt easy or can handled some hot situation. Like to make a bulb for a candle. The bulb will be open up and down, and not touching the flame, some space between, but will get a little hot .

thanks
Luiz
 Topic: Do engraving work when textured is baked in?
Do engraving work when textured is baked in? [message #73604] Sat, 24 August 2013 05:50 UTC
avatar takadonet  is currently offline takadonet
Messages: 5
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Will the 3d printing work correctly if my engraving were baked onto the object?

Also is there an easy way to determine if my font is the correct size and thickness with stainless steel?

I attached the zip file with the model and the texture file (probably have to edit the .x3d file so it can see the texture file)

Thanks!

  • Attachment: heart_v1.zip
    (Size: 916.79KB, Downloaded 19 time(s))

 Topic: Flexibility of the White, Strong and Flexible material for a thin wall model
Flexibility of the White, Strong and Flexible material for a thin wall model [message #72688] Tue, 06 August 2013 08:54 UTC
avatar refiz  is currently offline refiz
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Hi,

the model which I want to print is a ca. 30x20 cm square, 3mm thick, including several holes. The idea is to keep it relatively stiff, so the question is how flexible is the "White, Strong and Flexible" material? Would it bend if one places is vertically on a table (note that the model is 3 mm thick).
You guys have some experience on this?

All the best,
R.
 Topic: 3d piston with multiple moving parts and materials
3d piston with multiple moving parts and materials [message #72385] Tue, 30 July 2013 02:28 UTC
avatar twistedpancreas  is currently offline twistedpancreas
Messages: 7
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Hi there guys,

first time poster but not first time 3d printing, but first time printing rotating parts.

I'm looking at printing out a piston that moves as an example product which we can show prospective clients, as shown here...

https://dl.dropboxusercontent.com/u/29805738/3dPrint/piston1.jpg

https://dl.dropboxusercontent.com/u/29805738/3dPrint/piston2.jpg

The front casing will be able to be taken off and it will be transparent, and the back casing with moving parts will sit on a separate stand (the stand will be done in black detail plastic).

The question I have will I run into problems if I want the back and the moving parts all as one 3d print and done in stainless steel, ie will moving parts print out slightly stuck together like this video http://www.youtube.com/watch?feature=player_detailpage&v =6o1chNIFOXo&t=96

Here's how close I have the pins and how big the holes are that they protrude through...

https://dl.dropboxusercontent.com/u/29805738/3dPrint/piston3.jpg

Thanks in advance.

Ross.

[Updated on: Tue, 30 July 2013 02:48 UTC]


Yourz trooly, Ross www.twistedpancreas.com
 Topic: Help with rotating parts.
icon5.gif  Help with rotating parts. [message #72322] Mon, 29 July 2013 08:33 UTC
avatar cheese3000  is currently offline cheese3000
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I am creating a model with various parts connected together, but able to rotate.
Here is a basic example...
http://i.imm.io/1dYg7.png
The connections wont be visible, so dont need to look good.
I would like to know what would be the best way to do this, any help would be appreciated.
 Topic: Smartphone case material options
Smartphone case material options [message #70905] Wed, 03 July 2013 17:57 UTC
avatar Bassel  is currently offline Bassel
Messages: 1
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Hi, can we use material other than polyamide ('colour' strong & flexible/ polished or unpolished)? There was an option of using 'black detail' with the Indra iPhone 5 case but that got rejected when processed.

My problem is my polyamide smartphone case, although looks good, feels awful! Too grainy! Any way to overcome this?

Thanx.
 Topic: "Your model was too small for any of our 3D Printers."
"Your model was too small for any of our 3D Printers." [message #70083] Wed, 19 June 2013 07:47 UTC
avatar Malmquist  is currently offline Malmquist
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-- Update --

Problem solved, i contacted Shapeways support and they recommended me to download the free software "Netfabb", so i did, opened my pendant STL and saw that it was very small indeed even tough 3ds max told me otherwise, so i just rescaled it in Netfabb, uploaded it, and voila, worked like a charm!

Thanks to the great support staff of Shapeways!

Cheers

--

Hi guys and dolls,

So iv'e modelled a pendant of a 9mm bullet but with a hole in it for a chain.

The pendant is 29.69 mm high and 10 mm wide. I made it in 3ds max, did a STL check which didn't return any problems and then i exported the model as STL and uploaded it. But i always get "Your model was too small for any of our 3D Printers."

The units setup in 3ds max is in mm, and i upload it with the mm setting Shapeways suggest.

I've even tried to upload it without the chain hole, just as a solid piece, still to small.

Some help is greatly appreciated, any clues?

Thank you all,
Pontus

[Updated on: Wed, 19 June 2013 11:37 UTC]

 Topic: Laser scanning
Laser scanning [message #67983] Tue, 14 May 2013 17:57 UTC
avatar Thealmond  is currently offline Thealmond
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Does anyone know of a laser scanning service in the UK or nearby?
 Topic: is this bad for 3d printing?
is this bad for 3d printing? [message #67298] Wed, 01 May 2013 21:37 UTC
avatar graf1ty  is currently offline graf1ty
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I already ordered the model on shapeways, but found an 'artifact' inside the what would be printed segment...

http://s24.postimg.org/43hy4dxit/snapshotmesh00.png
free image hosting

would that cause printing errors or will it be printed ok?

 Topic: Questions about first pring
Questions about first pring [message #66375] Thu, 18 April 2013 19:33 UTC
avatar DanMihaila  is currently offline DanMihaila
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Hey guys!

This is the first time I'm considering printing something.

Actually I am considering two models but first I want to try with only one small prop.

Now, the models are done in Zbrush and they are from a few hundred polys up to a few millions.

I'm really confused about how to go about getting the models ready for printing. Does any one know where I can find really good info about how to use the 3d printing plug in from Zbrush? Or is there another program where I could make my object properly waterproofed and check for wholes?

Here is the model (prop) I'm talking about: http://p3d.in/oobiS/spin

Any help would be very much appreciated ...

P.s: I know how to read and I've found many good sources but I want to actually talk with people who done it before and tell me how everything worked for them and what I should be aware of.

Hope is ok!

Thanks for your patience!

Cheers!

Dan
 Topic: Dimensional Printing Tolerances
Dimensional Printing Tolerances [message #64735] Sun, 24 March 2013 00:55 UTC
avatar borland123D  is currently offline borland123D
Messages: 2
Registered: March 2013
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I've designed a female coupling fitting. I can size the part using my modeling program (Autodesk 123D Design) to provide sufficient fitup clearance, but it is guesswork if I don't know the printing tolerances. How can I be assured that the printed part will be a good fit with the male fitting?

Only the female coupling needs to be printed. For 'Strong and Flexible Plastic", what are the dimensional printing tolerances for a part using that kind of material?

Are the print tolerances the same in x, y, and z axis?

Thanks

.
 Topic: Material Weight per unit?
Material Weight per unit? [message #64497] Wed, 20 March 2013 16:56 UTC
avatar danproulx  is currently offline danproulx
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Hi all
Is there a list of printed weight per unit of volume for the materials?

I found WSF at .93g per cc

I want to create some larger display models which would be carried in luggage etc

Thanks

[Updated on: Wed, 20 March 2013 19:58 UTC]

 Topic: Silver sculpture
Silver sculpture [message #64440] Tue, 19 March 2013 18:09 UTC
avatar monrosm  is currently offline monrosm
Messages: 1
Registered: March 2013
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Hi

I am wanting to print the hood ornament from a Rolls-Royce Motor Car in Premium silver to scale.

In places the ornament has quite thin walls, 1mm at the smallest point. I have two questions to anyone who has any experience with this printing method:

1. Will it be possible to polish the item smooth as shown in some of the jewellery examples

2. Are 1mm wall thicknesses an issue?

It's obviously quite expensive to get it done in Premium silver so I would appreciate any advice before I go ahead with it.

http://www.weebly.com/uploads/1/2/6/2/12629268/4108200_orig.jpg

Thanks

[Updated on: Wed, 20 March 2013 12:29 UTC]

 Topic: Workflow: Sketchup in color on Mac
Workflow: Sketchup in color on Mac [message #64228] Sat, 16 March 2013 00:10 UTC
avatar Quixote  is currently offline Quixote
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Registered: June 2011
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Hoping someone could help me with a Sketchup workflow on my Mac., destined for color printing.

I've spent the last two years making models in Sketchup that I want to put into a Shapeways shop. The sketchup files upload to another site (sculpteo) no problem, and a third site (I.materialise) where they do some scale repair to the file and it is available in 24 hours. I'm using a few of the built-in texture files, but mostly the paint brush tools in Sketchup to color the model faces. And this is where everything seems to fall apart.

I can export the models to .kmz, and get the embedded dae file to view in blender, no problem (preview.app, too), with a texture folder holding about 17 jpgs. I can import the dae into meshlab, but cannot see any of the colors or textures no matter what render options I play with. Exporting to vrml, I can open the file in textedit.app, and see just one texture file referenced. Changing the explicit path and dropping the vrml file into the same folder as the textures, I can zip the folder, and upload to Shapeways. Unfortunately, the model has none of the painted sketchup colors, and many faces are missing (for one set, I have batched all the models together, 7 spaceships the size of a quarter, and only 1 and a half ships show up in the preview, no color).

In Blender, again, the modrl looks great. Clicking export to .x3d, in blender, I get an x3d file that when opened in textedit.app, references 17 variously rescaled jpg files (the textures from Sketchup), but all have explicit file paths (no relative file paths). I've used text edit to change the paths from "something/something/something/darkside.jpg" to just "/darkside.jpg", reimported the file into Blender to test, no problem. Zipped the x3d and jpgs into one file zip, uploaded...."File could not be processed"

</hit head on table>

Emails to customer support have been "sorry, we can't help you fix your model" which I get,
but my MODEL is fine, I just can't get it into their SYSTEM.

Thoughts? Help?

Thank you.

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 Topic: Printing orientation and material strength, for SLS
Printing orientation and material strength, for SLS [message #59913] Wed, 09 January 2013 15:35 UTC
avatar thomashuang.net  is currently offline thomashuang.net
Messages: 83
Registered: September 2011
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Member
I'm trying to decide print orientation for a local SLS printer for my parts. I'm considering the three main materials PA, PA-GF, and Alumide. I know that the z-axis strength is weaker than the x-y, so a thin ring would be stronger if printed flat instead of standing on its side.

But by how much?

For appearance, and other factors, I prefer to print my parts with the ring standing on its side to hide the stepping lines on other surfaces of my model, but I'm worried that this would weaken the part too much.

I'm looking at the EOS materials data center:
http://eos.materialdatacenter.com/eo/standard/main/compare

PA properties appear to be the same in all axis, except the "strain at break" of the Z (10%) is half of the X-Y (20%). Does this mean it is weaker in the Z-axis, or is it just as strong as the X-Y but half as flexible?

PA-GF shows weaker properties in all values in the Z-axis, but still stronger than PA.

Alumide is completely missing the Z-axis data.

Thanks
 Topic: Making molds for silicone in ceramic, glass thickness.
Making molds for silicone in ceramic, glass thickness. [message #59045] Fri, 21 December 2012 20:43 UTC
avatar mintra  is currently offline mintra
Messages: 1
Registered: December 2012
Go to all my models
Junior Member
Hi

I want to make a long thin mould to pour in silicone, I think cereamic would be best as I have made these before on a dimension 3d printer and it speeds up the curing process if you warm the mould up after pouring (and de gassing). and the plastic versions melt.

My question is one about the thickness of the glaze.

It would be useful to know.

a) The thickness of the glaze roughly as I am sure it varies.

b) Do we add this thickness to our model, (Hence make the mould a bit larger to allow for the extra thickness) or does way you submit the job allow for the thickness of the galze.

Thanks in advance

 Topic: 3D printing with amorphous ("glass-like") metal as the end result
3D printing with amorphous ("glass-like") metal as the end result [message #58387] Tue, 11 December 2012 11:09 UTC
avatar Tommy_2Tall  is currently offline Tommy_2Tall
Messages: 113
Registered: August 2009
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Senior Member

Hey there folks!

I just read this article about a new 3D printing method that makes it relatively "easy" to create objects of amorphous metal.
It's not SLS based though: they use electron beams to selectively sinter metal powder instantly and then the sintered material is actively cooled to leave the metal in it's amorphous state.

The benefits seems pretty impressing but I'm guessing that one of those EBM machines don't come cheap..

I'm hoping that Shapeways will have this kind of equipment at hand (or have a subcontractor that can do it) for the more demanding customers at some point in the not too distant future. Very Happy
When you think about it, one of these EBM printers could bridge the gap between consumer/enthusiast products and full blown ready for industry products.
There probably is quite some demand for Shapeways' businessmodel in that business segment? Very Happy

Oh, crap.. now I come of as a sales rep' but I can assure you, I am not affiliated with any of the companies mentioned below.
I'm just a Shapeways-customer that would LOVE to do a "material reference kit" with one of those machines or any prints at all for that matter. Very Happy

Here's the article that got my imagination running wild: 3D printing amorphous steel (Google Translate did a decent job on the article but the title and some other stuff reads like your typical auto-translated garbage)

Here's direct links to the printer supplier and the company that managed to do the amorphous prints with those (EBM) printers.
exmet.se
arcam.se - explanation of the EBM process

Hope you guys find it just as awe-inspiring as I did. Very Happy

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