Stackable Ikea Lack leg extender 165mm no screws needed

thingiverse

So, I needed to extend the legs of my Ikea lack table a full 330mm for my print enclosure design, and the resulting leg externder would exceed the build volume of my printer, so I decided to accomplish the task by cutting the length in half, and making them stackable, so two 165mm extenders stacked together would gve me the desired 330mm in added height. Please READ everything here carefully, as I'm relying on the slicer to take care of one issue. (which it does take care of beautifully) I'm no CAD expert, I desiged this in TinkerCad, and I really couldn't find any setting to add a champfer where it transitions from the leg to the stacking section, so it leaves a 90 degree overhang where the stacking section prints. I used Cura slicer, and enabled the "Make overhang printable" option in experimental settings of the profile. With this setting, Cura automatically adds the necessary champfer when it slices the model, and it prints without any issues. The gyroid infill makes for a strong print, using minimal material and the tolerance of the design means no screws needed, its a simple friction fit. Friction and gravity do the job (although I suppose you could put screws if you wanted, I found them to be completely unnecessary). Dimensional accuracy of your printer is critical, I designed for some variation (i.e. stacking hole is 51mm leg is 50mm but that's not much clearance, the standard ikea leg is 50.8mm... so its a tight friction fit. make sure you can print an accurate 20mm calibration cube within reasonable dimensional tolerance.