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        <title>Dual extruders</title>
        <description> I am in the process of rebuilding  my printer, and am toying with the idea of adding dual extruders.
Are there any advantages or disadvantages to this.?
Or is it a ego thing.?
Thanks.</description>
        <link>https://reprap.org/forum/read.php?406,822897,822897#msg-822897</link>
        <lastBuildDate>Wed, 22 Jul 2026 04:01:17 -0400</lastBuildDate>
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            <guid>https://reprap.org/forum/read.php?406,822897,822940#msg-822940</guid>
            <title>Re: Dual extruders</title>
            <link>https://reprap.org/forum/read.php?406,822897,822940#msg-822940</link>
            <description><![CDATA[ I forgot, there is another approach, which is to feed different filaments into a single hot end at different times. The main problem with these is that the filament tends to jam either when retracting it or when re-inserting it. Prusa's latest multi material system removes the not-in-use filament completely, and cuts off the end before re-inserting it.]]></description>
            <dc:creator>dc42</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Tue, 22 May 2018 03:48:25 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,822897,822911#msg-822911</guid>
            <title>Re: Dual extruders</title>
            <link>https://reprap.org/forum/read.php?406,822897,822911#msg-822911</link>
            <description><![CDATA[ Doubled up]]></description>
            <dc:creator>erniehatt</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Tue, 22 May 2018 00:07:04 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,822897,822910#msg-822910</guid>
            <title>Re: Dual extruders</title>
            <link>https://reprap.org/forum/read.php?406,822897,822910#msg-822910</link>
            <description><![CDATA[ Thanks for the info David.<br />
It hardly seems worth the trouble.]]></description>
            <dc:creator>erniehatt</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Tue, 22 May 2018 00:07:04 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,822897,822904#msg-822904</guid>
            <title>Re: Dual extruders</title>
            <link>https://reprap.org/forum/read.php?406,822897,822904#msg-822904</link>
            <description><![CDATA[ The fundamental issue with conventional dual extrusion using 2 nozzles is that the non-printing nozzle always interferes with the printing nozzle at certain places. There are a few ways around this:<br />
<br />
1. Use some mechanical means to raise the non-printing nozzle a little.<br />
<br />
2. Use dual independent X carriages (IDEX) so that the head with the non-printing nozzle can be parked out of the way.<br />
<br />
3. Use tool changing. See E3D's blog.<br />
<br />
4. Use a mixing extruder such as the Diamond. These have their own quirks and need to be handled well by the firmware. See [<a href="https://somei3deas.wordpress.com/tag/diamond-hot-end/" target="_blank"  rel="nofollow">somei3deas.wordpress.com</a>].<br />
<br />
HTH David]]></description>
            <dc:creator>dc42</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Mon, 21 May 2018 18:03:39 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,822897,822897#msg-822897</guid>
            <title>Dual extruders</title>
            <link>https://reprap.org/forum/read.php?406,822897,822897#msg-822897</link>
            <description><![CDATA[ I am in the process of rebuilding  my printer, and am toying with the idea of adding dual extruders.<br />
Are there any advantages or disadvantages to this.?<br />
Or is it a ego thing.?<br />
Thanks.]]></description>
            <dc:creator>erniehatt</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Mon, 21 May 2018 16:57:35 -0400</pubDate>
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