Air Raid Siren - hand crank version 2

prusaprinters

<p>Remix of my own design. I had a lot of positive response so i desided to redesign it and use metal bearings to avoid friction problems i had with the 100% 3D printed version. Runs much smoother now!</p> <p><strong>To build this you need these metric [mm] bearings:</strong><br/> (amount x outer diameter / inner diameter / height - link)</p> <p><strong>*1 x 47/25/12</strong> - <a href="http://www.skf.com/at/products/bearings-units-housings/ball-bearings/deep-groove-ball-bearings/single-row-deep-groove-ball-bearings/single-row/index.html?designation=E2.6005-2Z">SKF 6005-2Z </a><br/> <strong>*4 x 16/5/5</strong> - <a href="http://www.skf.com/at/products/bearings-units-housings/ball-bearings/deep-groove-ball-bearings/single-row-deep-groove-ball-bearings/single-row/index.html?designation=E2.625-2Z">SKF 625-2Z </a><br/> I also tried to design it with 3d printed bearings - But did not work that well. I could get these bearing in an industrial store in my town for around 35 €. The bearing are standard sizes - so you should get them easy.</p> <p><strong>Videos:</strong></p> <p>I uploaded two clips to youtube.</p> <ul> <li><a href="https://youtu.be/VzprH9Nd3co">Printing Timelapse </a></li> <li><p><a href="https://youtu.be/xtA24MJphcA">Assembly and Test</a><br/> <strong>Slicer note:</strong></p> <p>I used<strong> Simplify3D</strong> to slice all parts. If you print it with MakerWare the parts might not fit together - i found out that MakerWare does not care for the nozzle size. Thats why i had some space between every part on my preview version that was featered on thingiverse. I don't now how cura and other slicers work. You should test it with some small parts like GetrRad2A and GetrRad2B before you print bigger parts - they should fit together very tight.</p> <p>In case you own a Makerbot Replicator but don't have Simplify3D - i added a .zip-archive that contains all sliced .x3g-files ready to print. There is also a README.txt if you have problems getting the bigger parts printed on your R2.</p> </li> </ul> <p><strong>Designing:</strong></p> <p>I use basic AutoCAD to draw my 3D stuff because i use it a lot on my work. It took me about 200 hours to design this siren. I added the drawing file if you want to make changes.</p> <h3>Print instructions</h3><h3>Licence: Creative Commons - Attribution - Non-Commercial Category: Mechanical Toys Print Settings</h3> <p><strong>Printer Brand:</strong> MakerBot</p> <p><strong>Printer:</strong> <a href="http://amzn.to/2ngdGqv">MakerBot Replicator 2</a></p> <p><strong>Rafts:</strong> No</p> <p><strong>Supports:</strong> No</p> <p><strong>Resolution:</strong> 0.2</p> <p><strong>Notes:</strong></p> <p>Most parts can be printed with standard settings - No Raft, No Support.</p> <p><strong>Except of following changes:</strong></p> <p><strong>*Gehause3</strong> - change filament color while printing to get the text highlighted<br/> <strong>*GetrRad2A+B</strong>- print it solid, needs to be strong<br/> <strong>*GetrRad4A+B</strong> - print it solid, needs to be strong<br/> <strong>*Kurbel1</strong> - use brim to prevent warbing<br/> <strong>*Kurbel2</strong> - print the top layers solid<br/> <strong>*Rotor3</strong> - print it with high resolution (0.1 mm) and raft to get clean props<br/> <strong>*Schraube1</strong> - print it 3 times<br/> <strong>*Schraube2</strong> - print it 6 times<br/> <strong>*Schraube3</strong> - use brim</p> <h3> Post-Printing</h3> <p>If not every part fits after printing you may have to use some abrasive paper.</p> <p>Parts like the rotor should be sticked together.</p>