Lattice structures are getting lots of momentum in various fields due to their eccentric properties [1] . It is very important to have easy method to design these lattice structures. Lattice_Karak [2] helps in getting the work done. It is free software with UI made for students and researchers. Using Lattice_Karak helps in designing various TPMS structures, export them into stl file for further processing like 3D printing and Finite Element analysis. Lattice_Karak can be downloaded using the below link. https://drive.google.com/file/d/1WWL-UbPzErFCFVFJqw1as9w0M61aMxB4/view?usp=sharing Videos on how to further use lattice_karak. https://youtu.be/CuHQwsxPa3I https://sites.google.com/iith.ac.in/lattice-karak/home Suggested materials for understanding more about TPMS: 1) https://doi.org/10.1016/j.addma.2017.12.006 2) https://doi.org/10.1016/j.matdes.2017.03.018 3) https://doi.org/10...