| Little confusion of measurements [message #62602] Fri, 22 February 2013 16:52 UTC |
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Hi, someone made a pretty small 3D pentagon shape for me, and while its pretty much perfect, the measurements are making sense to me.
Each side on the pentagon has to be 1 3/4ths of an inch but when the shape is uploaded, the measurements are coming up much closer to 2 inches.
I can't get a hold of the guy right now and I was just wondering if anyone knew what the problem could be. I was told it was made using inches as the units but have tried all the other units available on the site and still no luck.
http://filebeam.com/872fd77a96274531cc28c65bb5d20999
There's a link to the file itself if that helps.
Thanks for any help guys.
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| Re: Little confusion of measurements [message #62614 is a reply to message #62602 ] Fri, 22 February 2013 18:59 UTC |
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It is most probably the bounding box size which is what Shapeways is showing.
Download your model. Get a copy of http://www.netfabb.com/basic.php it's free.
Just click on the icon that looks like a ruler. You can measure your model here.
If it is the wrong size just scale it in the axis you want.
[Updated on: Fri, 22 February 2013 19:00 UTC] jacantdesign@gmail.com
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| Re: Little confusion of measurements [message #62619 is a reply to message #62602 ] Fri, 22 February 2013 20:01 UTC |
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The measurements according to that program are all under 1/10 of an inch.
I'm pretty inexperienced with these programs, how do i rescale it?
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| Re: Little confusion of measurements [message #62623 is a reply to message #62619 ] Fri, 22 February 2013 20:51 UTC |
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Do a bit of math in Calculator
Divide 1.75 by 1.1 = 1.590909090909091 Copy this. (Or whatever the size is now)
In Netfabb.
Goto Part - Scale.
In Scale parts, untick equally
In 'X' and 'Y' paste answer
Hit Scale
Measure Part to check
You will now have to export this.
Goto - Part - Export part - as STL
Upload this new file.
That is assuming the model is flat with 'Z' up
[Updated on: Fri, 22 February 2013 20:53 UTC] jacantdesign@gmail.com
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| Re: Little confusion of measurements [message #62624 is a reply to message #62602 ] Fri, 22 February 2013 21:20 UTC |
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The models sides are still coming up around .07 inches with those numbers input.
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| Re: Little confusion of measurements [message #62627 is a reply to message #62624 ] Fri, 22 February 2013 22:07 UTC |
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Divide 1.75 the size you want by the exact side measurement it is now. 'Around' is not good enough to get the exact size you want.
Use the line - line measurement and pick the vertical edges.
If the model is not laying flat just rotate it to suit. So the flat face is up 'Z'
If you want you could send me the file by PM or my email address.

[Updated on: Fri, 22 February 2013 22:09 UTC] jacantdesign@gmail.com
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| Re: Little confusion of measurements [message #62630 is a reply to message #62627 ] Fri, 22 February 2013 23:17 UTC |
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File sent by PM
44.45mm = 1.75"
Attachment: unit.png
(Size: 11.99KB, Downloaded 79 time(s))
jacantdesign@gmail.com
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| Re: Little confusion of measurements [message #62631 is a reply to message #62602 ] Fri, 22 February 2013 23:43 UTC |
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Thanks a ton for all your help!
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