Fan Grid Multi Holes Generator

thingiverse

Sometimes, during a device's design, designers may have to incorporate one or more cooling fans. These fans must be able to draw air from and blow it into the surrounding environment, which necessitates drilling holes through the device's case that you're working with. Typically, there are two viable options: 1- Drilling a relatively small circular hole that is slightly narrower than the fan's impeller diameter, ensuring there are sufficient lateral holes for securing a protective grid. 2- Creating numerous small holes or slits directly on the case, bypassing the need to install the protection grid and grid itself, often preferable due to its lower cost and simplified assembly. The following OpenSCAD script allows designers to generate the "negative" of these holes and slits. This script constructs parametric solid objects that can be used to pierce through the surface of the device you're designing. For more detailed information or examples, check out http://ninjacross.com/Modules/Kms/Public/Kms_View.aspx?KmsItemCode=kmi_0000000000000000049. Alternatively, a similar project is showcased at http://www.thingiverse.com/thing:458670. Here's how to use the script: 1- Launch OpenSCAD and open the provided script. 2- Customize the parameters found at the top part of the script as desired. 3- Generate or render the model. 4- Export the resulting model in STL format or another CAD-compatible format, such as http://ninjacross.com/public/ContentItems/it-IT.rci_0635472314341406250/TestModel.png. 5- Merge the generated model with the surfaces of your case you wish to cut or drill through, similar to what is depicted in http://ninjacross.com/public/ContentItems/it-IT.rci_0635472314341406250/TestModel_WithGenerators.png. 6- Once merged, remove both the generated model and any intersected portions from your original device/object, as seen in http://ninjacross.com/public/ContentItems/it-IT.rci_0635472314341406250/TestModel_WithtHoles.png.