Ice Cube Tray Cover

thingiverse

I purchased a couple of silicone ice trays for freezing broths and stocks. They didn't come with covers, and when stacked, I had to be careful not to skew the top one or it would nest into the bottom one spilling the not yet frozen cubes. As someone who has a 3D printer, I know that saying "If you have a hammer, everything is a nail," so I designed this simple cover to keep the two trays separated when in the freezer. I didn't want to insulate the lower ice cube tray, so I printed with exposed infill. Any infill could probably be used, but I chose gyroid because I like the look it gives. Because the cover is too large for my print bed, I cut it in two using circles to create locking tabs (a little fancier than dove-tails, but still quite simple to design). My cut is 0.1mm and worked perfectly on my well-tuned Prusa i3 MK3S. The cut width is also parametric (see the sketch in the cut body to adjust the clearance). I created the model in FreeCAD v0.18 and included the FreeCAD files for remixing. The design is fully parametric, so it should be simple to modify to fit your own ice cube trays or any other rectangular container. If you don't use FreeCAD, I've also included a step file to import into your 3D modeler software of choice. The 3mf files are the project files from PrusaSlicer v2.1.1 and include my print settings. The settings variations from the profiles are applied to the objects, so edit those if you want to change perimeter count, infill type/density, and infill/external extrusion widths. I've also included the FreeCAD, Step, and stl files of the un-cut lid in case you have a printer large enough to print it as one piece. The full outer dimensions are: 277 x 143 x 10mm. See the pdf file for more detailed dimensions. You can see all the pictures and a printing time lapse of each half in this Google Photos album: https://photos.app.goo.gl/4iq5H2FCMGXwfcSm8