Fan Setting Torture Test

thingiverse

This is a straightforward pair of objects featuring 45-degree overhangs. According to standard practice, printing it cleanly should be no problem at all. Unfortunately, due to narrow overhangs and moderately short layer printing times, layer cooling issues can arise rapidly. As a result, this exercise will help you refine your active cooling methods. Because the parts are designed to interlock, your first test is whether they slide apart easily. There's a 0.5mm tolerance, so an optimally tuned printer should handle it with ease. More importantly, the interlocking pieces will put your fan's ability to cool partially obscured print sections to the test. If the inner overhangs appear worse than the outer ones, consider finding a better omnidirectional fan shroud. As a bonus, the finished print can be quite entertaining to play with, as the interlocking parts can be rotated into multiple stylish orientations. For optimal results, use a line width of 0.5 so that the 1mm-width overhangs will print without gaps. It's likely that people will complain about the size of the model and how long it takes to print. However, this is necessary for proper testing. The lower layers will probably print at your "minimum layer time", while the top layers are large enough to test your "default"/always-on fan settings. The photo shows the output from two different printers. The left print is from a Prusa i3 mk3 and displays the kind of smooth edges you should aim for with strong cooling. The right print is from a MonoPrice Maker Ultimate, and shows the sort of roughness you might get with inadequate cooling.