diff --git a/src/Dodge/Data.hs b/src/Dodge/Data.hs
index c4e8d8464..6e2f8b8fb 100644
--- a/src/Dodge/Data.hs
+++ b/src/Dodge/Data.hs
@@ -10,6 +10,7 @@ circular imports are probably not a good idea.
 {-# LANGUAGE DerivingStrategies #-}
 module Dodge.Data 
     ( module Dodge.Data
+    , module Dodge.Data.Item.Params
     , module Dodge.Data.Beam
     , module Dodge.Data.Targeting
     , module Dodge.Data.ItEffect
@@ -67,6 +68,7 @@ module Dodge.Data
     , module Dodge.Data.RadarBlip
     , module Dodge.Data.PathGraph
     ) where
+import  Dodge.Data.Item.Params
 import Dodge.Data.Beam
 import Dodge.Data.Targeting
 import Dodge.Data.ItEffect
@@ -417,25 +419,6 @@ data PressPlate = PressPlate
     }
 data FloorItem = FlIt { _flIt :: Item , _flItPos :: Point2 , _flItRot :: Float, _flItID :: Int}
 
-data Item = Item
-    { _itConsumption    :: ItemConsumption
-    , _itUse        :: ItemUse
-    , _itType       :: ItemType
-    , _itAttachment :: ItAttachment
-    , _itID         :: Maybe Int
-    , _itPos        :: ItemPos
-    , _itIsHeld     :: Bool
-    , _itEffect     :: ItEffect
-    , _itInvSize    :: Float
-    , _itInvColor   :: Color
-    , _itTargeting  :: Targeting
-    , _itDimension  :: ItemDimension
-    , _itCurseStatus    :: CurseStatus
-    , _itTweaks     :: ItemTweaks
-    , _itScope      :: Scope
-    , _itValue      :: ItemValue
-    , _itParams     :: ItemParams
-    }
 
 data IntID a = IntID Int a
 
@@ -504,87 +487,6 @@ type HitEffect' = Flame
     -> World 
     -> (World,Maybe Flame)
 
-data ItemTweaks
-    = NoTweaks
-    | Tweakable
-        { _tweakParams :: IM.IntMap TweakParam
-        , _tweakSel    :: Int
-        }
-data TweakParam = TweakParam
-        { _doTweak :: Int -> Item -> Item
-        , _curTweak  :: Int
-        , _maxTweak  :: Int
-        , _showTweak :: Int -> String
-        , _nameTweak :: String
-        }
-data Nozzle = Nozzle
-    { _nzPressure :: Float
-    , _nzDir :: Float
-    , _nzMaxWalkAngle :: Float
-    , _nzCurrentWalkAngle :: Float
-    , _nzWalkSpeed  :: Float
-    , _nzLength     :: Float
-    }
-data GunBarrels
-    = MultiBarrel
-        { _brlSpread     :: BarrelSpread
-        , _brlNum        :: Int
-        , _brlInaccuracy :: Float
-        }
-    | RotBarrel
-        { _brlNum    :: Int
-        , _brlInaccuracy :: Float
-        }
-    | SingleBarrel  {_brlInaccuracy :: Float}
-data ItemParams
-    = NoParams
-    | ShellLauncher
-        { _shellSpinDrag    :: Int
-        , _shellSpinAmount  :: Int
-        , _shellThrustDelay :: Int
-        }
-    | Refracting    
-        { _phaseV :: Float
-        , _lasColor :: Color
-        , _lasColor2 :: Color
-        , _lasCycle :: Int
-        , _lasDamage :: Int
-        }
-    | DualBeam
-        { _phaseV :: Float
-        , _lasColor :: Color
-        , _lasColor2 :: Color
-        , _lasCycle :: Int
-        , _lasDamage :: Int
-        , _lasBeam :: BeamType
-        , _subParams :: Maybe ItemParams
-        , _dbGap    :: Float
-        }
-    | Attracting    {_attractionPower :: Point2}
-    | BulletShooter
-        { _muzVel   :: Float
-        , _rifling  :: Float
-        , _bore     :: Float
-        , _gunBarrels :: GunBarrels
-        , _recoil       :: Float
-        , _torqueAfter  :: Float
-        , _randomOffset :: Float
-        }
-    | Sprayer { _sprayNozzles :: [Nozzle] }
-    | AngleWalk
-        { _maxWalkAngle :: Float
-        , _currentWalkAngle :: Float
-        , _walkSpeed :: Float
-        }
-    | Arcing 
-        { _currentArc :: Maybe [ArcStep] 
-        , _arcSize :: Float
-        , _arcNumber :: Int
-        , _newArcStep :: NextArcStep --ItemParams -> World -> ArcStep -> State StdGen (Maybe ArcStep)
-        , _previousArcEffect :: PreviousArcEffect
-        }
-    | ParamMID {_paramMID :: Maybe Int}
-data PreviousArcEffect = NoPreviousArcEffect | PerturbTillBreakPreviousArc
 data Modification
     = ModIDTimerPoint3Bool
         { _mdID     :: Int
@@ -1175,9 +1077,7 @@ data InPlacement = InPlacement
 makeLenses ''CreatureState
 makeLenses ''World
 makeLenses ''Creature
-makeLenses ''Item
 makeLenses ''FloorItem
-makeLenses ''TweakParam
 makeLenses ''Prop
 makeLenses ''Proj
 makeLenses ''Modification
@@ -1194,8 +1094,6 @@ makeLenses ''Terminal
 makeLenses ''Machine
 makeLenses ''MachineType
 makeLenses ''Universe
-makeLenses ''ItemParams
-makeLenses ''ItemTweaks
 makeLenses ''Gust
 makeLenses ''GunBarrels
 makeLenses ''Nozzle
diff --git a/src/Dodge/Data/Item.hs b/src/Dodge/Data/Item.hs
index 431fe75a2..307ec41cb 100644
--- a/src/Dodge/Data/Item.hs
+++ b/src/Dodge/Data/Item.hs
@@ -1,32 +1,55 @@
 {-# LANGUAGE TemplateHaskell #-}
 {-# LANGUAGE StrictData #-}
-module Dodge.Data.Item where
+module Dodge.Data.Item 
+    ( module Dodge.Data.Item
+    , module Dodge.Data.Item.Misc
+    ) where
 import Geometry.Data
 import Control.Lens
+import Dodge.Data.Item.Misc
+import Dodge.Data.Item.Consumption
+import Dodge.Data.Item.Use
+import Dodge.Data.Item.Params
+import Dodge.Data.ItEffect
+import Dodge.Data.Targeting
+import Dodge.Item.Data
+import Dodge.Combine.Data
+import Dodge.Item.Attachment.Data
+import Color
 
-data ItemDimension = ItemDimension
-    { _dimRad       :: Float
-    , _dimCenter    :: Point3
-    , _dimAttachPos :: Point3
+import qualified Data.IntMap.Strict as IM
+data Item = Item
+    { _itConsumption    :: ItemConsumption
+    , _itUse        :: ItemUse
+    , _itType       :: ItemType
+    , _itAttachment :: ItAttachment
+    , _itID         :: Maybe Int
+    , _itPos        :: ItemPos
+    , _itIsHeld     :: Bool
+    , _itEffect     :: ItEffect
+    , _itInvSize    :: Float
+    , _itInvColor   :: Color
+    , _itTargeting  :: Targeting
+    , _itDimension  :: ItemDimension
+    , _itCurseStatus    :: CurseStatus
+    , _itTweaks     :: ItemTweaks
+    , _itScope      :: Scope
+    , _itValue      :: ItemValue
+    , _itParams     :: ItemParams
     }
-data ItemPortage 
-    = HeldItem
-        { _handlePos :: Float
-        , _muzPos    :: Float
+data ItemTweaks
+    = NoTweaks
+    | Tweakable
+        { _tweakParams :: IM.IntMap TweakParam
+        , _tweakSel    :: Int
         }
-    | WornItem
-    | NoPortage
-
-data ItemValue = ItemValue
-    { _ivInt :: Int
-    , _ivType :: ItemValueType
-    }
-data ItemValueType = MundaneItem | ArtefactItem
-data ItemPos 
-    = InInv   { _ipCrID :: Int , _ipInvID :: Int }
-    | OnFloor { _ipFlID :: Int }
-    | VoidItm
-makeLenses ''ItemDimension
-makeLenses ''ItemPortage
-makeLenses ''ItemValue
-makeLenses ''ItemPos
+data TweakParam = TweakParam
+        { _doTweak :: Int -> Item -> Item
+        , _curTweak  :: Int
+        , _maxTweak  :: Int
+        , _showTweak :: Int -> String
+        , _nameTweak :: String
+        }
+makeLenses ''Item
+makeLenses ''ItemTweaks
+makeLenses ''TweakParam
diff --git a/src/Dodge/Data/Item/Misc.hs b/src/Dodge/Data/Item/Misc.hs
new file mode 100644
index 000000000..304850b1d
--- /dev/null
+++ b/src/Dodge/Data/Item/Misc.hs
@@ -0,0 +1,32 @@
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE StrictData #-}
+module Dodge.Data.Item.Misc where
+import Geometry.Data
+import Control.Lens
+
+data ItemDimension = ItemDimension
+    { _dimRad       :: Float
+    , _dimCenter    :: Point3
+    , _dimAttachPos :: Point3
+    }
+data ItemPortage 
+    = HeldItem
+        { _handlePos :: Float
+        , _muzPos    :: Float
+        }
+    | WornItem
+    | NoPortage
+
+data ItemValue = ItemValue
+    { _ivInt :: Int
+    , _ivType :: ItemValueType
+    }
+data ItemValueType = MundaneItem | ArtefactItem
+data ItemPos 
+    = InInv   { _ipCrID :: Int , _ipInvID :: Int }
+    | OnFloor { _ipFlID :: Int }
+    | VoidItm
+makeLenses ''ItemDimension
+makeLenses ''ItemPortage
+makeLenses ''ItemValue
+makeLenses ''ItemPos
diff --git a/src/Dodge/Data/Item/Params.hs b/src/Dodge/Data/Item/Params.hs
index 3757933d7..e9bec1b6c 100644
--- a/src/Dodge/Data/Item/Params.hs
+++ b/src/Dodge/Data/Item/Params.hs
@@ -1,3 +1,84 @@
+{-# LANGUAGE TemplateHaskell #-}
+{-# LANGUAGE StrictData #-}
 module Dodge.Data.Item.Params where
+import Dodge.Data.Beam
+import Dodge.Data.ArcStep
+import Geometry.Data
+import Color
+import Control.Lens
 
+data ItemParams
+    = NoParams
+    | ShellLauncher
+        { _shellSpinDrag    :: Int
+        , _shellSpinAmount  :: Int
+        , _shellThrustDelay :: Int
+        }
+    | Refracting    
+        { _phaseV :: Float
+        , _lasColor :: Color
+        , _lasColor2 :: Color
+        , _lasCycle :: Int
+        , _lasDamage :: Int
+        }
+    | DualBeam
+        { _phaseV :: Float
+        , _lasColor :: Color
+        , _lasColor2 :: Color
+        , _lasCycle :: Int
+        , _lasDamage :: Int
+        , _lasBeam :: BeamType
+        , _subParams :: Maybe ItemParams
+        , _dbGap    :: Float
+        }
+    | Attracting    {_attractionPower :: Point2}
+    | BulletShooter
+        { _muzVel   :: Float
+        , _rifling  :: Float
+        , _bore     :: Float
+        , _gunBarrels :: GunBarrels
+        , _recoil       :: Float
+        , _torqueAfter  :: Float
+        , _randomOffset :: Float
+        }
+    | Sprayer { _sprayNozzles :: [Nozzle] }
+    | AngleWalk
+        { _maxWalkAngle :: Float
+        , _currentWalkAngle :: Float
+        , _walkSpeed :: Float
+        }
+    | Arcing 
+        { _currentArc :: Maybe [ArcStep] 
+        , _arcSize :: Float
+        , _arcNumber :: Int
+        , _newArcStep :: NextArcStep --ItemParams -> World -> ArcStep -> State StdGen (Maybe ArcStep)
+        , _previousArcEffect :: PreviousArcEffect
+        }
+    | ParamMID {_paramMID :: Maybe Int}
+data PreviousArcEffect = NoPreviousArcEffect | PerturbTillBreakPreviousArc
+data GunBarrels
+    = MultiBarrel
+        { _brlSpread     :: BarrelSpread
+        , _brlNum        :: Int
+        , _brlInaccuracy :: Float
+        }
+    | RotBarrel
+        { _brlNum    :: Int
+        , _brlInaccuracy :: Float
+        }
+    | SingleBarrel  {_brlInaccuracy :: Float}
+data Nozzle = Nozzle
+    { _nzPressure :: Float
+    , _nzDir :: Float
+    , _nzMaxWalkAngle :: Float
+    , _nzCurrentWalkAngle :: Float
+    , _nzWalkSpeed  :: Float
+    , _nzLength     :: Float
+    }
+data BarrelSpread
+    = AlignedBarrels
+    | SpreadBarrels   {_spreadAngle :: Float}
+    | RotatingBarrels {_rotatingBarrelInaccuracy :: Float}
 
+makeLenses ''BarrelSpread
+makeLenses ''ItemParams
diff --git a/src/Dodge/Item/Data.hs b/src/Dodge/Item/Data.hs
index 66f5dc988..7568aeb4a 100644
--- a/src/Dodge/Item/Data.hs
+++ b/src/Dodge/Item/Data.hs
@@ -1,13 +1,8 @@
 {-# LANGUAGE StrictData #-}
-{-# LANGUAGE TemplateHaskell #-}
+--{-# LANGUAGE TemplateHaskell #-}
 module Dodge.Item.Data where
-import Control.Lens
+--import Control.Lens
 data CurseStatus 
     = Uncursed 
     | UndroppableIdentified 
     | UndroppableUnidentified
-data BarrelSpread
-    = AlignedBarrels
-    | SpreadBarrels   {_spreadAngle :: Float}
-    | RotatingBarrels {_rotatingBarrelInaccuracy :: Float}
-makeLenses ''BarrelSpread