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	<id>https://wiki.opensourceecology.org/index.php?action=history&amp;feed=atom&amp;title=Slide_17</id>
	<title>Slide 17 - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://wiki.opensourceecology.org/index.php?action=history&amp;feed=atom&amp;title=Slide_17"/>
	<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;action=history"/>
	<updated>2026-04-13T18:45:46Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;diff=24224&amp;oldid=prev</id>
		<title>Syk0 saje at 17:36, 2 May 2011</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;diff=24224&amp;oldid=prev"/>
		<updated>2011-05-02T17:36:05Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 17:36, 2 May 2011&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Line 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{delete|contents moved to [[Slide 1]]}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Slide 1]] - [[Slide 2]] - [[Slide 3]] - [[Slide 4]] - [[Slide 5]] - [[Slide 6]] - [[Slide 7]] - [[Slide 8]] - [[Slide 9]] - [[Slide 10]] - [[Slide 11]] - [[Slide 12]] - [[Slide 13]] - [[Slide 14]] - [[Slide 15]] - [[Slide 16]] - [[Slide 17]] - [[Slide 18]] - [[Slide 19]] - [[Slide 20]] - [[Slide 21]] - [[Slide 22]] - [[Slide 23]] - [[Slide 24]] - [[Slide 25]] - [[Slide 26]] - [[Slide 27]] - [[Slide 28]] - [[Slide 29]] - [[Slide 30]] - [[Slide 31]] - [[Slide 32]] - [[Slide 33]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Slide 1]] - [[Slide 2]] - [[Slide 3]] - [[Slide 4]] - [[Slide 5]] - [[Slide 6]] - [[Slide 7]] - [[Slide 8]] - [[Slide 9]] - [[Slide 10]] - [[Slide 11]] - [[Slide 12]] - [[Slide 13]] - [[Slide 14]] - [[Slide 15]] - [[Slide 16]] - [[Slide 17]] - [[Slide 18]] - [[Slide 19]] - [[Slide 20]] - [[Slide 21]] - [[Slide 22]] - [[Slide 23]] - [[Slide 24]] - [[Slide 25]] - [[Slide 26]] - [[Slide 27]] - [[Slide 28]] - [[Slide 29]] - [[Slide 30]] - [[Slide 31]] - [[Slide 32]] - [[Slide 33]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Syk0 saje</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;diff=1909&amp;oldid=prev</id>
		<title>WikiSysop at 19:28, 29 April 2008</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;diff=1909&amp;oldid=prev"/>
		<updated>2008-04-29T19:28:37Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 19:28, 29 April 2008&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l2&quot;&gt;Line 2:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 2:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br/&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Image:Slide 17.jpg]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Image:Slide 17.jpg]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;----&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;We have a good example from Factor e Farm that shows why design for disassembly is desirable. Our tractor broke. It takes 8 hours just to split the tractor in the middle to find out what is wrong. That job cost us $2k to fix. Soon after, the engine exploded. It may or may not be an easy fix, but it will also cost considerable labor to get into the engine to see what’s wrong. We decided to let the tractor lie dead in the woods – we can’t keep up with what turned out to be $3000/year overall costs of the tractor.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;We decided to build a tractor designed for disassembly, from 4x4 steel tubing that bolts together at the corners. This is a true life-size Erector Set in action. We designed it to be taken apart, entirely, within about an hour. It is a multipurpose agricultural/construction tractor, with maintenance costs designed to be $100/year.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>WikiSysop</name></author>
	</entry>
	<entry>
		<id>https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;diff=1834&amp;oldid=prev</id>
		<title>WikiSysop: New page: Slide 1 - Slide 2 - Slide 3 - Slide 4 - Slide 5 - Slide 6 - Slide 7 - Slide 8 - Slide 9 - Slide 10 - Slide 11 - Slide 12 - Slide 13 - [[...</title>
		<link rel="alternate" type="text/html" href="https://wiki.opensourceecology.org/index.php?title=Slide_17&amp;diff=1834&amp;oldid=prev"/>
		<updated>2008-04-29T18:12:45Z</updated>

		<summary type="html">&lt;p&gt;New page: &lt;a href=&quot;/wiki/Slide_1&quot; title=&quot;Slide 1&quot;&gt;Slide 1&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_2&quot; title=&quot;Slide 2&quot;&gt;Slide 2&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_3&quot; title=&quot;Slide 3&quot;&gt;Slide 3&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_4&quot; title=&quot;Slide 4&quot;&gt;Slide 4&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_5&quot; title=&quot;Slide 5&quot;&gt;Slide 5&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_6&quot; title=&quot;Slide 6&quot;&gt;Slide 6&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_7&quot; title=&quot;Slide 7&quot;&gt;Slide 7&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_8&quot; title=&quot;Slide 8&quot;&gt;Slide 8&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_9&quot; title=&quot;Slide 9&quot;&gt;Slide 9&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_10&quot; title=&quot;Slide 10&quot;&gt;Slide 10&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_11&quot; title=&quot;Slide 11&quot;&gt;Slide 11&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_12&quot; title=&quot;Slide 12&quot;&gt;Slide 12&lt;/a&gt; - &lt;a href=&quot;/wiki/Slide_13&quot; title=&quot;Slide 13&quot;&gt;Slide 13&lt;/a&gt; - [[...&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;[[Slide 1]] - [[Slide 2]] - [[Slide 3]] - [[Slide 4]] - [[Slide 5]] - [[Slide 6]] - [[Slide 7]] - [[Slide 8]] - [[Slide 9]] - [[Slide 10]] - [[Slide 11]] - [[Slide 12]] - [[Slide 13]] - [[Slide 14]] - [[Slide 15]] - [[Slide 16]] - [[Slide 17]] - [[Slide 18]] - [[Slide 19]] - [[Slide 20]] - [[Slide 21]] - [[Slide 22]] - [[Slide 23]] - [[Slide 24]] - [[Slide 25]] - [[Slide 26]] - [[Slide 27]] - [[Slide 28]] - [[Slide 29]] - [[Slide 30]] - [[Slide 31]] - [[Slide 32]] - [[Slide 33]]&lt;br /&gt;
&lt;br /&gt;
[[Image:Slide 17.jpg]]&lt;/div&gt;</summary>
		<author><name>WikiSysop</name></author>
	</entry>
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