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		<title>Modeling a wind-up clock</title>
		<link>http://www.rhino3dhelp.com/tutorials/modeling-a-wind-up-clock-2/</link>
		<comments>http://www.rhino3dhelp.com/tutorials/modeling-a-wind-up-clock-2/#comments</comments>
		<pubDate>Sun, 21 Feb 2010 18:39:20 +0000</pubDate>
		<dc:creator>Ivan</dc:creator>
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		<guid isPermaLink="false">http://www.rhino3dhelp.com/?p=1764</guid>
		<description><![CDATA[This tutorial will help you through the process of modeling old vintage wind-up clock. It is fairly easy to follow, so make sure you do it. When approaching modeling this clock, and any other model, I first try to divide it into parts. Obviously every product has its parts, and naturally you would go model [...]]]></description>
			<content:encoded><![CDATA[<p>This tutorial will help you through the process of modeling old vintage wind-up clock. It is fairly easy to follow, so make sure you do it.<span id="more-1764"></span></p>
<div id="attachment_1766" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/024.png" rel="lightbox[1764]"><img class="size-medium wp-image-1766" title="Winup clock" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/024-300x145.png" alt="" width="300" height="145" /></a><p class="wp-caption-text">Final rendered model of our windup clock</p></div>
<p>When approaching modeling this clock, and any other model, I first try to divide it into parts. Obviously every product has its parts, and naturally you would go model one by one. This is that kind of model where your don&#8217;t have to think about which part to model first. This is obvious, first you need a clock body, then you can go about modeling which ever part. Here I first created the body, then the back plate with screws, then the front plate without numbers, bells and hammer, legs, and then in the end made the numbers and handles for the front plate.</p>
<h2>STEP 1</h2>
<p>Ok, in this step we will be creating the body. Since I lost every clock I had like this, I had to model it from reference images from the internet. So, we don&#8217;t have the measures, or technical drawings, but we need to model by eye, looking at the various images and approximate the lengths, distances and so on.</p>
<p>I created a template for my default usage with grid extents set to 10. So, make sure you do the same with Snap command, and clicking on the Extents options and input 10.</p>
<p>Now, we can start modeling. Since we don&#8217;t know what the accurate dimensions are, we will need to use our old method of trial and error. We will first create three straight lines with <a href="http://www.rhino3dhelp.com/tag/polyline/" class="st_tag internal_tag" rel="tag" title="Posts tagged with Polyline">Polyline</a> or <a href="http://www.rhino3dhelp.com/tag/line/" class="st_tag internal_tag" rel="tag" title="Posts tagged with Line">Line</a> command.</p>
<div id="attachment_1768" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-1.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1768" title="clock-1" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-1-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img1</p></div>
<p>Next thing would be to connect these lines with curves, and that we will do with <a href="http://www.rhino3dhelp.com/tag/blendcrv/" class="st_tag internal_tag" rel="tag" title="Posts tagged with BlendCrv">BlendCrv</a> command. Make sure you use G1 for both ends, so we get tangency.</p>
<div id="attachment_1769" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-2.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1769" title="clock-2" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-2-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img2</p></div>
<p>Using <a href="http://www.rhino3dhelp.com/tag/join/" class="st_tag internal_tag" rel="tag" title="Posts tagged with Join">Join</a> command make sure those lines are all joined together. So, next thing would be to create a surface out of this section curve, and we&#8217;ll do that with <a href="http://www.rhino3dhelp.com/tag/revolve/" class="st_tag internal_tag" rel="tag" title="Posts tagged with Revolve">Revolve</a> command. But, before that, we need to turn on the Record History option, so we can work on the surface by simply editing the curve.</p>
<div id="attachment_1770" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-3.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1770" title="clock-3" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-3-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img3</p></div>
<p>Now, if we select our initial curve, and using <a href="http://www.rhino3dhelp.com/tag/pointson/" class="st_tag internal_tag" rel="tag" title="Posts tagged with PointsOn">PointsOn</a> command turn on the control points and if we move those points, we will automatically update the surface as well. If we used Record History that is.</p>
<div id="attachment_1771" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-4.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1771" title="clock-4" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-4-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img4</p></div>
<p>Ok, next thing would be to adjust the curves a bit so the surface is little more accurate. Try to make something like on the image below:</p>
<div id="attachment_1772" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-5.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1772" title="clock-5" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-5-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img5</p></div>
<p>Using <a href="http://www.rhino3dhelp.com/tag/offsetsrf/" class="st_tag internal_tag" rel="tag" title="Posts tagged with OffsetSrf">OffsetSrf</a> command, we need to offset this surface to inside by 0.3 units. So, make sure you flip the direction normals when in <a href="http://www.rhino3dhelp.com/tag/offsetsrf/" class="st_tag internal_tag" rel="tag" title="Posts tagged with OffsetSrf">OffsetSrf</a> command, so they point to inside.</p>
<div id="attachment_1773" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-6.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1773" title="clock-6" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-6-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img6</p></div>
<p>Then, simply, with <a href="http://www.rhino3dhelp.com/tag/blendsrf/" class="st_tag internal_tag" rel="tag" title="Posts tagged with BlendSrf">BlendSrf</a> command blend the gaps and <a href="http://www.rhino3dhelp.com/tag/join/" class="st_tag internal_tag" rel="tag" title="Posts tagged with Join">Join</a> the four surfaces.</p>
<div id="attachment_1774" class="wp-caption alignnone" style="width: 310px"><a href="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-7.jpg" rel="lightbox[1764]"><img class="size-medium wp-image-1774" title="clock-7" src="http://www.rhino3dhelp.com/wp-content/uploads/2010/02/clock-7-300x193.jpg" alt="" width="300" height="193" /></a><p class="wp-caption-text">img7</p></div>
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