Parametric Partition

thingiverse

I designed this FreeCAD project to add partitions to my box project [https://www.thingiverse.com/thing:3581884]. The partitions can be added to other boxes - pre-existing 3D printed boxes, cardboard boxes or even small drawers. They can also be integrated into a box design. A spreadsheet ["PartitionParms"] is part of the project for which the FreeCAD file is provided. Specify the inside dimensions of the containing box and the number of cells in X- and Y- directions. The wall thickness is adjustable too. The X-dimensions of all cells are equal as are the Y-dimensions. They are calculated, nominal values. Specify only the outside dimensions of the lattice and the number of cells in each direction. The wall thickness will reduce the cell dimensions but usually not by a lot. It isn't accounted for in the cell size. The lattice is limited to 6 cells in X- and Y- directions. The partition lattice is notched along the outside perimeter at top and bottom. The top notch allows clearance for a lid with a skirt that slips into the box bottom such as in my box project. The notch isn't needed if the partition walls are sufficiently shorter than the box walls. The same notch also provides clearance for a hinged lid needed only if the partition is taller than the inside height of the box body. The width and depth of this notch are specified in the spreadsheet. For no notch, set the notch values small (I set to 0.1) but not zero. If you're adept at handling fusions (unions) you could just remove it from the model. The bottom notch clears a fillet which may exist where the box walls meet the bottom. If not needed, set to a small value (again, I use 0.1) but not zero. Or, just remove it. It's not needed if the partition is integrated with a box - it will intersect and be in one piece with the box. The box bottom thickness is only for placing the top notch which depends on the height of the partition walls and where zero is. Integrate this partition project into a box project using copy-and-paste being sure to include the spreadsheet with the partition body if you might make changes. This project can also be integrated with copies of itself to create irregular partitions. Start with a base partition lattice with large-ish cells. In a separate copy of this project, create a partition lattice where the "box size" is the same as a cell size from the first lattice. Copy the body into the original project but do not copy the spreadsheet. Shift it around to fit it into a cell. Rinse-and-repeat.