Under $30 easy Prusa mk3 linear rail mod

prusaprinters

<h3> Linear rail mod for Prusa mk3</h3> <ul> <li>This mod use 300mm MGN12 linear rails. (I used the Chinese one, that only cost under $15 each)</li> <li>No need to cut the rail. </li> <li>The parts are design to match the original build height(Z) and Y movement spaces, so NO build volume lost and NO needed to modify the firmware. It will pass all the self-test calibration.</li> <li>Easy to setup, the springs will keep the bed secure while leave the blocks some space to align itself.</li> <li><p>You will need to modify the PSU holder if you have the old sliver-PSU( not needed in rev2) -&gt; Demo video <a href="https://www.youtube.com/watch?v=MpT0MBIkZBg">https://www.youtube.com/watch?v=MpT0MBIkZBg</a></p> <p>Change log</p> </li> </ul> <hr/> <h3>2020/04/21 Updated rev2</h3> <ul> <li>Adjust Square nut slot and blot hole size.</li> <li>More compact and stronger Tail and Bridge mounter.</li> <li>All part can be printed with out support.</li> <li>Can be use with both older sliver and newer black PSU without modify the PSU case. Why</li> </ul> <hr/> <ul> <li>The Chinese liner rail is cheap and it much stable and quieter than the smooth rod - bushing combo.</li> <li>The linear rail look neat. Q/A</li> </ul> <hr/> <ul> <li>Q : But the Y rod is 330mm, your rail is only 300mm..</li> <li>A : Look at the last picture. Parts list</li> </ul> <hr/> <h3>Bolts and washers</h3> <ul> <li>2x 300mm MGN12 rail</li> <li>3x MGN12C block</li> <li>2x M3x10 bolt</li> <li>10x M3x12 bolt</li> <li>4x M3x15 countershunk bolt</li> <li>6x M3 washer</li> <li>12x M3 spring washer</li> <li>4x 4x10mm spring (or can be cut from ball point pen sping)</li> <li>4x M3 nut</li> <li>4x M4 nut</li> <li>4x M4 washer</li> <li>4x spring washer</li> <li>4x M4 T-nut</li> <li>8x M3 T-nut</li> <li>8x M3x15 bolt</li> <li>8x M3 square nut</li> <li><ul> <li>spring washer are optional </li> </ul> <p>### Printable part rev2</p> </li> <li><p>2x head mount</p> </li> <li>4x node mount</li> <li>2x tail mount (need to be mirrored in slicer) Installation</li> </ul> <hr/> <ul> <li>Put m3 nut(nylocs are recommended) into the Tail printed parts.</li> <li>Mount the printed parts to the printer frame. Tail parts use M4 bolts.</li> <li>Install the Rails using M3x10 bolts. Don't over tighten the bolts, this will make the part to deform.</li> <li>Install 2x MGN12C on the left side, 1x MGN12C (MGN12H will also work) on the right side</li> <li>Use M3x10 bolt,washer,spring washer to secure the Y carrier to the left block. Make sure it nice and tight.</li> <li>Use M1x15 countershunk bolt, 4x10 springx m3 washer to secure the Y carrier to the right blocks. DO NOT tighten the bolts too much, leave it some space to align the block itself.</li> <li>I'm too lazy to write the full tutorial, check the pictures for more details.<h3>Print Settings</h3> </li> </ul> <p><strong>Rafts:</strong></p> <p>No</p> <p><p class="detail-setting supports"><strong>Supports: </strong> <div><p>Yes</p></div><strong>Resolution:</strong></p> <p>0.2mm</p> <p><p class="detail-setting infill"><strong>Infill: </strong> <div><p>30%</p></div><br/> <strong>Filament:</strong><br/> Any PETG or ABS Any</p> </p></p> Category: 3D Printing Tests