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        <title>prusa i3 printing exactly 20% smaller than sliced</title>
        <description> i&#039;ve built a ton of printers

i run a large bank for a living and have done so for many years

thought i&#039;d seen every problem you could see with a 3d printer......nope :)


just finished a new aurora i3 (my current favorites)


no matter what you slice every print turns out 20% smaller on the x and y than sliced

the z prints exactly as sliced, perfect


anybody  got any ideas?

thanks in advance</description>
        <link>https://reprap.org/forum/read.php?406,572340,572340#msg-572340</link>
        <lastBuildDate>Tue, 21 Jul 2026 13:14:31 -0400</lastBuildDate>
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        <item>
            <guid>https://reprap.org/forum/read.php?406,572340,573250#msg-573250</guid>
            <title>Re: prusa i3 printing exactly 20% smaller than sliced</title>
            <link>https://reprap.org/forum/read.php?406,572340,573250#msg-573250</link>
            <description><![CDATA[ it was the pulleys<br />
<br />
i didnt think i even had any 16 t pulleys :)<br />
<br />
thanks for the help]]></description>
            <dc:creator>otter5555</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Tue, 20 Oct 2015 17:07:07 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,572340,572451#msg-572451</guid>
            <title>Re: prusa i3 printing exactly 20% smaller than sliced</title>
            <link>https://reprap.org/forum/read.php?406,572340,572451#msg-572451</link>
            <description><![CDATA[ Number of teeth on the GT2 pulleys is 16 instead of 20. That's exactly 20% difference.<br />
-Olaf]]></description>
            <dc:creator>o_lampe</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Mon, 19 Oct 2015 04:18:11 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,572340,572364#msg-572364</guid>
            <title>Re: prusa i3 printing exactly 20% smaller than sliced</title>
            <link>https://reprap.org/forum/read.php?406,572340,572364#msg-572364</link>
            <description><![CDATA[ I agree with Qdeathstar. Confirm steps per mm with the Prusa Calculator.]]></description>
            <dc:creator>gmckee</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Sun, 18 Oct 2015 22:58:57 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,572340,572343#msg-572343</guid>
            <title>Re: prusa i3 printing exactly 20% smaller than sliced</title>
            <link>https://reprap.org/forum/read.php?406,572340,572343#msg-572343</link>
            <description><![CDATA[ not an expert but the first thing I would suspect is that the steps per mm is set up wrong or maybe one of the jumpers for the micro steps is loose.]]></description>
            <dc:creator>Qdeathstar</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Sun, 18 Oct 2015 20:46:08 -0400</pubDate>
        </item>
        <item>
            <guid>https://reprap.org/forum/read.php?406,572340,572340#msg-572340</guid>
            <title>prusa i3 printing exactly 20% smaller than sliced</title>
            <link>https://reprap.org/forum/read.php?406,572340,572340#msg-572340</link>
            <description><![CDATA[ i've built a ton of printers<br />
<br />
i run a large bank for a living and have done so for many years<br />
<br />
thought i'd seen every problem you could see with a 3d printer......nope :)<br />
<br />
<br />
just finished a new aurora i3 (my current favorites)<br />
<br />
<br />
no matter what you slice every print turns out 20% smaller on the x and y than sliced<br />
<br />
the z prints exactly as sliced, perfect<br />
<br />
<br />
anybody  got any ideas?<br />
<br />
thanks in advance]]></description>
            <dc:creator>otter5555</dc:creator>
            <category>Prusa i3 and variants</category>
            <pubDate>Sun, 18 Oct 2015 20:33:35 -0400</pubDate>
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