The Fused Deposition Modeling (FDM) build process includes something called self-supporting angle. This is the angle in which the model material can support itself without the use of support material. If you can build this into your model you will save a ton of time. The example below shows two cantilevered parts of the model. One is at 45 degrees and one is at 42. FDM machines are fastest when they do not have to stop and switch between model and support materials.
Within the Insight software we have the option of adjusting the self-supporting angle. This means we can change the angle slightly to eliminate towers of support material. This option doses come with a warning. You can adjust this with in reason. I cannot give you an exact dimension you can push it to because it relies heavily on the geometry of your part. In this example I changed the angle from 45 to 42. Then the reprocessed support material and the tool path.
By making this small change of the self-supporting angle we saved four hours of build time and $10.75 of support material. If we had to build six of these the savings would be 24 hours of build time and $64.50 in support material.
Here are a few examples of angle adjustments in the part itself and using the self-supporting angle feature within the insight software.
This bottle prototype went from a build time of nine hours to five hours 47 minutes and saved us almost $20.00 in support material. This modification was done in the SolidWorks model. There was no need to adjust the self-supporting angle in insight.
The blades on this model are right at the 45 degree line. By changing the self-supporting angle to 43 degrees in insight, I save four hours of build time and almost $9 of support material.
With every model you are about to print I always recommend viewing the model with all layers visible. You do this by hitting the View All Layers icon in Insight. If everything looks okay I will then view every layer individually. I do this by pressing the F5 key to view the model from the top, right click on the screen and select shade tool path, change the view to just one layer by clicking the view current layer icon. Then starting from the top or the bottom layer, I will hold the Page Up or Page Down key to step through all the layers to do a quick visual inspection of all the internal tool paths. Once it all checks out I hit the Build button. I recommend practicing with small test parts and making multiple adjustments back and forth to see the outcome.