This is a combination of hex bases from MechanicalFrog and MiniHulkMechs.  The Hex top from MechanicalFrog is placed onto the MiniHulk hazard stripes base.  The bottom was made solid and then enlarged magnet holes were placed.  The magnet holes are large enough to be printed on FDM for 3mm magnets.  

[https://www.myminifactory.com/object/3d-print-hex-tech-bases-for-battletech-miniatures-225145](https://www.myminifactory.com/object/3d-print-hex-tech-bases-for-battletech-miniatures-225145) - Mechanical Frog Bases

[https://cults3d.com/en/3d-model/game/magnetic-battletech-hex-bases-with-hazard-stripes-presupported-minihulkmechs](https://cults3d.com/en/3d-model/game/magnetic-battletech-hex-bases-with-hazard-stripes-presupported-minihulkmechs) -MiniHulkMechs