Prusa MK3S Tighter Extruder Body - OBSOLETE (Fixed in R6)

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<h3> IMPORTANT UPDATE</h3> <p><strong><em> Fixes implemented in this model, together with some other important updates, are now officially implemented in the Prusa R6 version, so please use them instead. This model remains here just for reference.</em></strong></p> <p><strong> Original printable Prusa parts can be downloaded here:</strong> <a href="https://github.com/prusa3d/Original-Prusa-i3/tree/MK3S/Printed-Parts/STL">https://github.com/prusa3d/Original-Prusa-i3/tree/MK3S/Printed-Parts/STL</a></p> <h3> Original notes</h3> <p><em>The original Prusa MK3S R4 extruder body has the bottom heatbreak opening 0.40 mm wider than the old MK3 (Ø22.8 vs Ø22.4 of the MK3).<strong>**In version 4x this is left as-is</strong></em>.</p> <p>The neck tolerances are set to +0.1 mm, so the neck socket dimensions are 16.1 mm and 12.1 mm, providing a firmer grip of the heatbreak.</p> <ul> <li>Original files here <a href="https://github.com/prusa3d/Original-Prusa-i3/tree/MK3S">https://github.com/prusa3d/Original-Prusa-i3/tree/MK3S</a> and here <a href="https://www.prusa3d.com/prusa-i3-printable-parts/">https://www.prusa3d.com/prusa-i3-printable-parts/</a></li> <li>Forum topic on the issue: <a href="https://shop.prusa3d.com/forum/general-discussion-announcements-and-releases-f69/the-current-mk3s-extruder-body-is-0-4-mm-loose-r--t27757.html">https://shop.prusa3d.com/forum/general-discussion-announcements-and-releases-f69/the-current-mk3s-extruder-body-is-0-4-mm-loose-r--t27757.html</a></li> <li>GitHub issue: <a href="https://github.com/prusa3d/Original-Prusa-i3/issues/119">https://github.com/prusa3d/Original-Prusa-i3/issues/119</a></li> <li><p>E3D V6 1.75mm Heat Sink blueprint: <a href="https://e3d-online.dozuki.com/Document/Ztd4NlQ3MF2x61nj/V6-175-SINK.pdf">https://e3d-online.dozuki.com/Document/Ztd4NlQ3MF2x61nj/V6-175-SINK.pdf</a> ### UPDATE</p> </li> <li><p>2020-12-08 - Became obsolete, as the proposed changes got accepted by Prusa since R6</p> </li> <li>2019-10-31 - Extruder Body and Extruder Cover made with thicker fins, accordingly to the officially updated parts. Bottom opening is left with the original 0.4mm clearance.</li> <li>2019-03-06 - Neck tolerances changed from +0.2 to +0.1 for an even tighter grip</li> <li>2019-02-15 - High resolution model<h3>Print Settings</h3> </li> </ul> <p><strong>Printer Brand:</strong></p> <p>Prusa</p> <p><strong>Printer:</strong></p> <p>i3 MK3</p> <p><strong>Rafts:</strong></p> <p>No</p> <p><strong>Supports:</strong></p> <p>No</p> <p><strong>Resolution:</strong></p> <p>0.20</p> <p><strong>Infill:</strong></p> <p>20%</p> <p><strong>Notes:</strong></p> <ul> <li>Black PET</li> <li>20% Grid or Gyroid infill (Prusa recommends Grid, but I prefer Gyroid)</li> </ul> Category: 3D Printer Parts