Once you've got the Fiber, head to an Armor crafting station Take any suit of eligible armor and construct a Level 5 Ballistic Weave mod. This can be purchased in Goodneighbor at K-L-EO's shop in batches of 25. To create a new Ballistic Weave, you'll also need Ballistic Fiber as a raw material. You can also grab Army Fatigues from Gunners in many areas.these are perfect for Weave augmentation. If you don't already own an eligible armor, Tinker Tom sells some prefab suits that can be upgraded with better Weave mods. You'll see a new option for Weave Mods on all eligible armors. You won't even know until you next visit an Armor crafting station, and then only if you're carrying one of several eligible types of cloth-based underarmor. Do so.Ĭompleting this sequence has the invisible effect of opening up an entirely new modding ability for your character, but the change isn't obvious. When Tom mentions the Cache you've discovered, he'll offer to let you examine his goods for sale.
Once you've completed these prerequisites, look around Railroad HQ this guy, Tinker Tom, and strike up a friendly conversation.