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Both grids must be of the same size (small+small or large+large).In this case, you don’t want to unmerge again, so just grind off the Merge blocks when you’re done.
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Only merging lets you recreate the permanent structure needed to hold grids together, which is not otherwise possible. Merge Blocks can permanently glue together grids that have broken in two.Merge Blocks can temporarily attach and detach (merge and unmerge) modular block tools or weapons that are to be used for a time and then swapped out, such as a Drill or Rocket Launcher attachment.Merged grids can be accessed from a Cockpit on either part as if it were all one grid.Merge blocks can form an airtight seal.Merge Blocks can dock and undock ships and PBWs.Using merge blocks to add hot-swappable temporary attachments to a mothership Only the side with the small clamps can merge. The Block attaches to other blocks on 5 of 6 faces. From version 1.199 on, a compact 1x1x1 small-grid variant is also available. The Merge Block occupies a 1x1x1 sized block space on large ships and stations, or a 1x3x3 block space on small ships. Merge Blocks placed to form a seal turn two airtight grids into one airtight grid, whereas subgrids alone are never airtight.In contrast to attaching two grids through rotor and rotor head, a merged grid is one mass and easy to handle in flight, whereas using rotors forms subgrids whose mass throws off the Inertial Dampers.(If you need inventory access, you’ll still need to add Conveyors or Connectors to your merged grids).
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A Merge Block is different from a Connector in so far that it does not extend the conveyor system.7 Caveats: Permanent versus temporary merging.
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