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	<title>Comments on: Blender help?</title>
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	<link>http://makerblock.com/2010/03/blender-help/</link>
	<description>And I, for one, welcome our new robotic overlords</description>
	<lastBuildDate>Fri, 10 Feb 2012 23:51:05 +0000</lastBuildDate>
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		<title>By: Erik de Bruijn</title>
		<link>http://makerblock.com/2010/03/blender-help/comment-page-1/#comment-332</link>
		<dc:creator>Erik de Bruijn</dc:creator>
		<pubDate>Sun, 07 Mar 2010 11:59:19 +0000</pubDate>
		<guid isPermaLink="false">http://makerblock.com/?p=1208#comment-332</guid>
		<description>It seems you&#039;re using sketchup... Since it&#039;s not a solid modeler, it&#039;s ambiguous what&#039;s the inside and what&#039;s the outside of the object. 
All of the purple faces are inverted. You shouldn&#039;t see those or they shouldn&#039;t be purple. You normally should only see white/grey-ish faces. You can invert them by right-clicking on them and choosing invert face. Also have a look at the cadspan plugin, it has several aids to create solid models, including a shrinkwrapping service that will make sure your model is 100% printable.
For such an application (tight tolerances, parts that should mate) OpenSCAD seems very appropriate. Designing something like this would take a few minutes. Union of a spere, two cylinders. Removing that (scaled up a few percents) from the mating part. which is made in the same way.
I&#039;ve uploaded a derivative to thingiverse to show what it would look like when made with OpenSCAD.</description>
		<content:encoded><![CDATA[<p>It seems you&#8217;re using sketchup&#8230; Since it&#8217;s not a solid modeler, it&#8217;s ambiguous what&#8217;s the inside and what&#8217;s the outside of the object.<br />
All of the purple faces are inverted. You shouldn&#8217;t see those or they shouldn&#8217;t be purple. You normally should only see white/grey-ish faces. You can invert them by right-clicking on them and choosing invert face. Also have a look at the cadspan plugin, it has several aids to create solid models, including a shrinkwrapping service that will make sure your model is 100% printable.<br />
For such an application (tight tolerances, parts that should mate) OpenSCAD seems very appropriate. Designing something like this would take a few minutes. Union of a spere, two cylinders. Removing that (scaled up a few percents) from the mating part. which is made in the same way.<br />
I&#8217;ve uploaded a derivative to thingiverse to show what it would look like when made with OpenSCAD.</p>
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	<item>
		<title>By: MakerBlock</title>
		<link>http://makerblock.com/2010/03/blender-help/comment-page-1/#comment-331</link>
		<dc:creator>MakerBlock</dc:creator>
		<pubDate>Sun, 07 Mar 2010 08:19:06 +0000</pubDate>
		<guid isPermaLink="false">http://makerblock.com/?p=1208#comment-331</guid>
		<description>:)  Thank you.  Once I can get it to work I think people can incorporate it as a component of larger useful items.  I&#039;m thinking of one that could work as a bearing of sorts.</description>
		<content:encoded><![CDATA[<p>:)  Thank you.  Once I can get it to work I think people can incorporate it as a component of larger useful items.  I&#8217;m thinking of one that could work as a bearing of sorts.</p>
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	<item>
		<title>By: Rodbotic</title>
		<link>http://makerblock.com/2010/03/blender-help/comment-page-1/#comment-330</link>
		<dc:creator>Rodbotic</dc:creator>
		<pubDate>Sun, 07 Mar 2010 07:17:07 +0000</pubDate>
		<guid isPermaLink="false">http://makerblock.com/?p=1208#comment-330</guid>
		<description>cool idea.</description>
		<content:encoded><![CDATA[<p>cool idea.</p>
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