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        <title>How is it made?</title>
        <description> Zach,
How do you make the plastic part of the barrel that the metal tip screws into?  Do you mold it, or do you mill it?  What type of material is it?  Please let me know.

Thanks</description>
        <link>https://reprap.org/forum/read.php?70,8441,8441#msg-8441</link>
        <lastBuildDate>Thu, 14 May 2026 21:32:34 -0400</lastBuildDate>
        <generator>Phorum 5.2.23</generator>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8525#msg-8525</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8525#msg-8525</link>
            <description><![CDATA[ O ok, yea that makes sense.]]></description>
            <dc:creator>redskinsjbs</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Wed, 16 Jan 2008 13:23:10 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8512#msg-8512</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8512#msg-8512</link>
            <description><![CDATA[ Injection moulds typically cost $10000 - $100000, so you need to make a lot more than 100 of something to make it economical and you have to be sure your design is correct. That is why RP techinques like FDM exist.]]></description>
            <dc:creator>nophead</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Wed, 16 Jan 2008 05:18:36 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8500#msg-8500</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8500#msg-8500</link>
            <description><![CDATA[ order a hundred of them from an injection moulding company. I'm sure that would work.]]></description>
            <dc:creator>redskinsjbs</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Tue, 15 Jan 2008 21:00:53 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8491#msg-8491</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8491#msg-8491</link>
            <description><![CDATA[ the problem with that is getting it made.  i'm not entirely sure how you'd do it, but you'd probably have to start with a sizeable rectangular chunk of PTFE, lathe it down to the right size, drill it, tap it, and then cut the holes.  that takes the relatively cheap part to being an expensive part.<br />
<br />
it would work if it was just you making 1 part, but what we need to consider is that eventually hundreds (or thousands) of these parts will need to be made.  thats a whole new design challenge.]]></description>
            <dc:creator>ZachHoeken</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Tue, 15 Jan 2008 17:32:20 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8450#msg-8450</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8450#msg-8450</link>
            <description><![CDATA[ I was thinking something like this for the new part.  Sorry I can't draft.<br />
<br />
[attachment 442 NewPTFTHolder.jpg]]]></description>
            <dc:creator>Anonymous User</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Mon, 14 Jan 2008 16:41:30 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8447#msg-8447</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8447#msg-8447</link>
            <description><![CDATA[ i actually did not make any of them, i had them made for me.<br />
<br />
i believe a lathe was used, and it was tapped to 3/8"]]></description>
            <dc:creator>ZachHoeken</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Mon, 14 Jan 2008 16:04:38 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8444#msg-8444</guid>
            <title>Re: How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8444#msg-8444</link>
            <description><![CDATA[ It's PTFE (Teflon). There's a set of DIY instructions here: [<a href="http://reprap.org/bin/view/Main/ExtruderMechanicalParts" target="_blank"  rel="nofollow">reprap.org</a>]]]></description>
            <dc:creator>degroof</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Mon, 14 Jan 2008 14:47:27 -0500</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?70,8441,8441#msg-8441</guid>
            <title>How is it made?</title>
            <link>https://reprap.org/forum/read.php?70,8441,8441#msg-8441</link>
            <description><![CDATA[ Zach,<br />
How do you make the plastic part of the barrel that the metal tip screws into?  Do you mold it, or do you mill it?  What type of material is it?  Please let me know.<br />
<br />
Thanks]]></description>
            <dc:creator>Anonymous User</dc:creator>
            <category>Plastic Extruder Working Group</category>
            <pubDate>Mon, 14 Jan 2008 14:04:32 -0500</pubDate>
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