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Shapeways is giving me issues [message #41789] Thu, 12 January 2012 18:10 UTC Go to next message
avatar zreed042  is currently offline zreed042
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Howdy fellas. I'm trying to design a flash hider that would fit on the standard 14mm threads from an airsoft rifle (which I think are M14-1 6H). At this point, I'm using Autocad Inventor and trying to upload the model via a .stl file to Shapeways so that they can print it. However, I've run into some problems.

Here's what I have so far:
http://i1130.photobucket.com/albums/m522/zreed042/hider3.png
http://i1130.photobucket.com/albums/m522/zreed042/hider2.png
http://i1130.photobucket.com/albums/m522/zreed042/hider1.png

And here's what shapeways thinks I upload:
http://i1130.photobucket.com/albums/m522/zreed042/shapeways_hidererror.png

It somehow fills in the hole that I tapped and threaded. Is there any way to fix this?

Re: Shapeways is giving me issues [message #41791 is a reply to message #41789 ] Thu, 12 January 2012 18:49 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
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How did you add the threads?

Between the threads and the main body are a series of 140 super-thin shells. Each one of those shells is single-sided, with a hole on the reverse side.

index.php?t=getfile&id=13297&private=0

I don't know Inventory, but there should be some way to fix this. One possiblilty is to make the outside dimension of the threads ever so slighty larger.

  • Attachment: shells.jpg
    (Size: 79.68KB, Downloaded 336 time(s))


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: Shapeways is giving me issues [message #41797 is a reply to message #41791 ] Thu, 12 January 2012 19:25 UTC Go to previous messageGo to next message
avatar zreed042  is currently offline zreed042
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I used the thread feature on Inventor and then used a plugin that models the thread in 3D.
Re: Shapeways is giving me issues [message #41800 is a reply to message #41797 ] Thu, 12 January 2012 19:37 UTC Go to previous messageGo to next message
avatar Roy_Stevens  is currently offline Roy_Stevens
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I think you just answered your own question there. I don't know inventor, but in other 3D CAD programs I've used, plugins are usually only good for visual effects, not solid modeling. I'd recommend modeling the thread directly using a spiral extrusion or something similar.


Earl Grey, hot.
Re: Shapeways is giving me issues [message #41802 is a reply to message #41800 ] Thu, 12 January 2012 19:39 UTC Go to previous messageGo to next message
avatar zreed042  is currently offline zreed042
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That's basically what this plugin does. It finds the ANSI specifications for the thread that I used and then creates a coil that cuts out the threads from the part. I'll try doing it manually and seeing what happens.

[Updated on: Thu, 12 January 2012 19:40 UTC]

Re: Shapeways is giving me issues [message #41807 is a reply to message #41802 ] Thu, 12 January 2012 19:59 UTC Go to previous messageGo to next message
avatar zreed042  is currently offline zreed042
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I did the threads completely manually and I'm still having the issue.

What other software can I use to make threads on my part prior to upload?

Or is it even possible for Shapways to print threads?
Re: Shapeways is giving me issues [message #41810 is a reply to message #41789 ] Thu, 12 January 2012 20:26 UTC Go to previous messageGo to next message
avatar Youknowwho4eva  is currently offline Youknowwho4eva
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The thread can be printed depending on the size and the material.

Stoney used Netfabb to assess your model, you could get Netfabb basic (free) and use it's repair processes to fix your model.


I learned a long time ago the wisest thing I can do is be on my own side, be an advocate for myself and others like me. -Maya Angelou
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Re: Shapeways is giving me issues [message #41823 is a reply to message #41810 ] Thu, 12 January 2012 22:33 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
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Even Netfabb is having trouble with the geometry. (I'll skip the long technical explanation)

If you'd like for me to look at it more.. Can you produce the two peices separately and email them to me? models@stonysmith.com


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: Shapeways is giving me issues [message #41826 is a reply to message #41823 ] Thu, 12 January 2012 22:46 UTC Go to previous messageGo to next message
avatar zreed042  is currently offline zreed042
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You know, I think I fixed it.

Instead of using the plugin, I just copied the thread size, pitch, length, etc. from the first part and just created another and used the coil command to manually cut out the threads to the desired size.

http://www.shapeways.com/model/437087/14mm_ccw_flashhider.ht ml?key=ff17752a5d95fbf39cd3cfc639bae8ba

[Updated on: Thu, 12 January 2012 22:46 UTC]

Re: Shapeways is giving me issues [message #41831 is a reply to message #41826 ] Thu, 12 January 2012 22:57 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
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Cool beans. Now, you just have to work around the fact that Shapeways has a rule against weapons. Very Happy

I wonder how such parts are dealt with?


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: Shapeways is giving me issues [message #41836 is a reply to message #41831 ] Fri, 13 January 2012 02:09 UTC Go to previous messageGo to next message
avatar Roy_Stevens  is currently offline Roy_Stevens
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Doesn't look like a weapon to me. The only way you could hurt someone with that is to throw it at them. Just be smart with your description.


Earl Grey, hot.
Re: Shapeways is giving me issues [message #41864 is a reply to message #41789 ] Fri, 13 January 2012 13:39 UTC Go to previous messageGo to next message
avatar Youknowwho4eva  is currently offline Youknowwho4eva
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This part shouldn't be a problem. It doesn't look like a weapon, and is only an accessory.


I learned a long time ago the wisest thing I can do is be on my own side, be an advocate for myself and others like me. -Maya Angelou
michael@shapeways.com Community Advocate
Re: Shapeways is giving me issues [message #41926 is a reply to message #41836 ] Sat, 14 January 2012 08:04 UTC Go to previous messageGo to next message
avatar Twopounder  is currently offline Twopounder
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johnnylingo wrote on Fri, 13 January 2012 02:09

Doesn't look like a weapon to me. The only way you could hurt someone with that is to throw it at them. Just be smart with your description.


It's also impossible to use with any of the fabricating methods that shapeways employs. It would just shatter (and damage your rifle in the process).

Should be fine for airsoft though.


http://fracturedmesh.blogspot.com/ - my 3d modeling blog
Re: Shapeways is giving me issues [message #41933 is a reply to message #41831 ] Sat, 14 January 2012 10:57 UTC Go to previous message
avatar Kaetemi  is currently offline Kaetemi
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stonysmith wrote on Thu, 12 January 2012 22:57

Cool beans. Now, you just have to work around the fact that Shapeways has a rule against weapons. Very Happy

"It's a miniature space station part." Cool


Kaetemi

 
   
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