Prusa/Parts List: Difference between revisions

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<td>8mm×420mm</td>
<td>8mm×420mm</td>
<td>Smooth rod</td>
<td>Smooth rod</td>
<td>X-axis structural support, as well as slides. See note below for the grades of steel necessary. </td>
<td>X-axis structural support, as well as slides. See note 1 below for the grades of steel necessary. </td>
<td>Billy</td>
<td>Billy</td>
</tr>
</tr>
Line 279: Line 279:
<td>8mm×406mm</td>
<td>8mm×406mm</td>
<td>Smooth rod</td>
<td>Smooth rod</td>
<td>Y-axis structural support, as well as slides. See note below for the grades of steel necessary. This is from the original Prusa design. We've used angle iron and desk-drawer slides. Testing and comparison of the design will be needed. Womblish solution...:)) They've been provided anyway, in case this solution doesn't work well. It'll work as a Repstrap though. </td>
<td>Y-axis structural support, as well as slides. See note 1 below for the grades of steel necessary. This is from the original Prusa design. We've used angle iron and desk-drawer slides. Testing and comparison of the design will be needed. Womblish solution...:)) They've been provided anyway, in case this solution doesn't work well. It'll work as a Repstrap though. </td>
<td>Billy</td>
<td>Billy</td>
</tr>
</tr>
<tr>
<tr>
<td>2</td>
<td>2</td>
<td>8mm×420mm</td>
<td>8mm×350mm</td>
<td>Smooth rod</td>
<td>Smooth rod</td>
<td>X-axis structural support, as well as slides. See note below for the grades of steel necessary. </td>
<td>Z-axis structural support, as well as slides. See note 1 below for the grades of steel necessary. </td>
<td>Billy</td>
<td>Billy</td>
</tr>
<tr>
<td>1</td>
<td>225mm×225mm print top plate</td>
<td>Thick Sheet</td>
<td>Original design spec. We've used a sheet of scrap plywood of a different size instead. This refflects the different print volume size, due to the difference in the size of the Y-axis.</td>
<td>Billy</td>
</tr>
<tr>
<td>1</td>
<td>140mm×225mm print bottom plate</td>
<td>Thick Sheet</td>
<td>Original design spec. This part may not be necessary, as the Prusa Iteration 2 design does not use a print bottom plate. We'll experiment and document.</td>
<td>Billy</td>
</tr>
<tr>
<td>1</td>
<td>840mm×5mm T5 pitch timing belt</td>
<td>Belt</td>
<td>Y-axis belt. Original design spec. We may be able to get away with using a shorter belt, due to the difference in design. We'll experiment and document.</td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>900mm×5mm T5 pitch timing belt</td>
<td>Belt</td>
<td>X-axis belt.</td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>NEMA 17 bipolar stepper motor</td>
<td>Stepper</td>
<td>X-axis stepper motor. Hipster recommended this one http://www.zappautomation.co.uk/sy42sth471684b-p-29.html See note 2 below.</td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>NEMA 17 bipolar stepper motor</td>
<td>Stepper</td>
<td>Y-axis stepper motor. Hipster recommended this one http://www.zappautomation.co.uk/sy42sth471684b-p-29.html See note 2 below.</td>
<td></td>
</tr>
<tr>
<td>2</td>
<td>NEMA 17 bipolar stepper motor</td>
<td>Stepper</td>
<td>Z-axis stepper motors. Hipster recommended this one http://www.zappautomation.co.uk/sy42sth471684b-p-29.html Please note that these ones have to run in parallel, so they need to be a matched pair. Also, eee note 2 below.</td>
<td></td>
</tr>
<tr>
<td>1</td>
<td>NEMA 17 bipolar stepper motor</td>
<td>Stepper</td>
<td>Extruder stepper motor. Hipster recommended this one http://www.zappautomation.co.uk/sy42sth471684b-p-29.html but any stepper motor that can provide at least 3.4Kg/cm of torque will do the job. Also, see note 2 below.</td>
<td></td>
</tr>
</tr>
</table>
</table>




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Note 1: 304 Stainless Steel, A2 Tool Steel, or O1 Tool Steel are recommended for smooth rods as it can help to prevent friction from rust and manufacturing (straightness) standards are higher. Rust issues can be prevented on the normal steel rods by maintaining a coat of oil. The smooth rods can also be cut from larger 3x1m pieces (see Smooth Rod Cut Order below).
 
 
Note: 304 Stainless Steel, A2 Tool Steel, or O1 Tool Steel are recommended for smooth rods as it can help to prevent friction from rust and manufacturing (straightness) standards are higher. Rust issues can be prevented on the normal steel rods by maintaining a coat of oil. The smooth rods can also be cut from larger 3x1m pieces (see Smooth Rod Cut Order below).
2 8mm×406mm Smooth rod Y-bar
2 8mm×350mm Smooth rod Z-bar
1 225mm×225mm print top plate Thick Sheet
1 140mm×225mm print bottom plate Thick Sheet Note: The Prusa Iteration 2 design does not use a print bottom plate.
1 840mm×5mm T5 pitch timing belt Belt Y axis
1 900mm×5mm T5 pitch timing belt Belt X axis
5 NEMA 17 bipolar stepper motor Stepper Be sure to get ones with at least 20mm of shaft length. Shorter shafts require modifications to the X pulley assembly and Z motor couplers. One of the five motors, for use with the extruder, should be capable of creating a holding torque of at least 40Ncm, at the very least.  


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Note 2: When ordering the motors, be sure to get ones with at least 20mm of shaft length. Shorter shafts require modifications to the X pulley assembly and Z motor couplers.


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