diff --git a/LuaLibs/WProcessFreeContour.lua b/LuaLibs/WProcessFreeContour.lua
index f44c8f6..2083155 100644
--- a/LuaLibs/WProcessFreeContour.lua
+++ b/LuaLibs/WProcessFreeContour.lua
@@ -1,4 +1,4 @@
--- ProcessFreeContour.lua by Egaltech s.r.l. 2022/04/03
+-- ProcessFreeContour.lua by Egaltech s.r.l. 2022/04/04
 -- Gestione calcolo profilo libero per Pareti
 -- 2021/11/15 Penna e chiodature sono sempre riportate sulla faccia sopra anche se nel progetto sono sotto.
 -- 2021/12/10 In taglio con lama aggiunta gestione SCC per testa Gearbox.
@@ -358,9 +358,9 @@ local function GetFacesData( Proc, bOpposite, bCalclForBlade, dToolDiam, dToolMa
          end
       end
       -- recupero centro e normale della faccia
-      local ptCen, vtN = EgtSurfTmFacetCenter( nNewProc, nFac, GDB_ID.ROOT) 
+      local vtN = EgtSurfTmFacetNormVersor( nNewProc, nFac, GDB_ID.ROOT) 
       -- recupero le dimensioni della faccia
-      local _, dLen, dWidth = WL.GetFaceHvRefDim( nNewProc, nFac)
+      local frHV, dLen, dWidth = WL.GetFaceHvRefDim( nNewProc, nFac)
       -- recupero l'angolo con la faccia precedente
       local bAdj, ptLocP1, ptLocP2, dAng = EgtSurfTmFacetsContact( nNewProc, nPrecFac, nFac, GDB_ID.ROOT)
       local dPrevAng = EgtIf( bAdj, dAng, 0)
@@ -374,7 +374,7 @@ local function GetFacesData( Proc, bOpposite, bCalclForBlade, dToolDiam, dToolMa
       -- calcolo l'angolo di inclinazione (dalla verticale)
       local dSideAng = asin( vtN:getZ())
       -- salvo i dati
-      vFace[i] = { Fac = nFac, Cen = ptCen, Norm = vtN, Len = dLen, Width = dWidth, PrevAng = dPrevAng, PlPrevAng = dPlanePrevAng, SideAng = dSideAng}
+      vFace[i] = { Fac = nFac, Cen = frHV:getOrigin(), Norm = vtN, Len = dLen, Width = dWidth, PrevAng = dPrevAng, PlPrevAng = dPlanePrevAng, SideAng = dSideAng}
       if bAdj then
          if ptLocP1:getZ() < ptLocP2:getZ() then
             vFace[i].PPrev = ptLocP1
@@ -435,8 +435,8 @@ local function GetFacesData( Proc, bOpposite, bCalclForBlade, dToolDiam, dToolMa
          local vtDir = Vector3d( vtOrt) ; vtDir:rotate( Z_AX(), -90)
          local vtUp = Vector3d( vtDir) ; vtUp:rotate( vFace[i].Norm, -90)
          local ptIni = vFace[i].Cen + vFace[i].Width / 2 * vtUp + ( vFace[i].Len / 2 + WHISK_OFFS) * vtDir + WHISK_OFFS * vtOrt
-         local ptDir = ptIni + ( vFace[i].Whisk - WHISK_OFFS) * vtDir
-         local ptCross = ptDir + ( dToolThick - WHISK_OFFS) * vtOrt
+         local ptDir = ptIni + ( vFace[i].Whisk - 2 * WHISK_OFFS) * vtDir
+         local ptCross = ptDir + ( dToolThick - 2 * WHISK_OFFS) * vtOrt
          local WhId = EgtSurfFrRectangle3P( nAddGrpId, ptIni, ptCross, ptDir, GDB_RT.GLOB)
          local b3Wh = EgtGetBBoxGlob( WhId or GDB_ID.NULL, GDB_BB.STANDARD)
          -- verifico se interferisce con gli altri pezzi
@@ -463,8 +463,8 @@ local function GetFacesData( Proc, bOpposite, bCalclForBlade, dToolDiam, dToolMa
          local vtDir = Vector3d( vtOrt) ; vtDir:rotate( Z_AX(), 90)
          local vtUp = Vector3d( vtDir) ; vtUp:rotate( vFace[i].Norm, 90)
          local ptIni = vFace[i].Cen + vFace[i].Width / 2 * vtUp + ( vFace[i].Len / 2 + WHISK_OFFS) * vtDir + WHISK_OFFS * vtOrt
-         local ptDir = ptIni + ( vFace[i].Whisk - WHISK_OFFS) * vtDir
-         local ptCross = ptDir + ( dToolThick - WHISK_OFFS) * vtOrt
+         local ptDir = ptIni + ( vFace[i].Whisk - 2 * WHISK_OFFS) * vtDir
+         local ptCross = ptDir + ( dToolThick - 2 * WHISK_OFFS) * vtOrt
          local WhId = EgtSurfFrRectangle3P( nAddGrpId, ptIni, ptCross, ptDir, GDB_RT.GLOB)
          local b3Wh = EgtGetBBoxGlob( WhId or GDB_ID.NULL, GDB_BB.STANDARD)
          -- verifico se interferisce con gli altri pezzi
diff --git a/LuaLibs/WallLib.lua b/LuaLibs/WallLib.lua
index b5f0150..e19d316 100644
--- a/LuaLibs/WallLib.lua
+++ b/LuaLibs/WallLib.lua
@@ -1,4 +1,4 @@
--- WallLib.lua by Egaltech s.r.l. 2020/11/18
+-- WallLib.lua by Egaltech s.r.l. 2022/04/04
 -- Libreria globale per Pareti
 
 -- Tabella per definizione modulo
@@ -241,6 +241,9 @@ function WallLib.GetFaceHvRefDim( nSurfId, nFacet)
    end
    -- determino l'ingombro in questo riferimento
    local b3HV = EgtSurfTmGetFacetBBoxRef( nSurfId, nFacet, GDB_BB.STANDARD, frHV)
+   -- aggiusto l'origine del riferimento per metterlo nel centro del box
+   local ptBoxCen = b3HV:getCenter()
+   frHV:move( ptBoxCen:getX() * frHV:getVersX() + ptBoxCen:getY() * frHV:getVersY())
    -- restituisco i valori calcolati
    return frHV, b3HV:getDimX(), b3HV:getDimY()
 end
diff --git a/NestFlipAndRotate.lua b/NestFlipAndRotate.lua
index b2b655a..3990fab 100644
--- a/NestFlipAndRotate.lua
+++ b/NestFlipAndRotate.lua
@@ -439,8 +439,8 @@ if not bManualRot then
    -- setto info nel pezzo 
    if nRotate > 0 then
       local nPartRot = EgtGetInfo( NFAR.PARTID, "ROTATED", 'i') or 0
-      local nTotRot = nPartRot + nRotate
-      nTotRot = EgtIf( nTotRot < 360, nTotRot, nTotRot - 360)    
+      local nTotRot = nPartRot - nRotate
+      nTotRot = EgtIf( nTotRot < 0, nTotRot + 360, nTotRot)
       EgtSetInfo( NFAR.PARTID, "ROTATED", nTotRot)  
       EgtSetInfo( NFAR.PARTID, "FLIPROTMODIFIED", 1)
    end   
diff --git a/NestProcess.lua b/NestProcess.lua
index d0927be..1c6e723 100644
--- a/NestProcess.lua
+++ b/NestProcess.lua
@@ -1115,8 +1115,8 @@ local function ClassifyAngles( nPartId, RawPart, sRefOrig, bLockedRot, dMinSheet
    end   
    if nRotate > 0 then 
       local nPartRot = EgtGetInfo( nPartId, "ROTATED", 'i') or 0
-      local nTotRot = nPartRot + nRotate
-      nTotRot = EgtIf( nTotRot < 360, nTotRot, nTotRot - 360)    
+      local nTotRot = nPartRot - nRotate
+      nTotRot = EgtIf( nTotRot < 0, nTotRot + 360, nTotRot)  
       EgtSetInfo( nPartId, "ROTATED", nTotRot)
       EgtSetInfo( nPartId, "MODIFIEDFORNEST", 1)
    end
@@ -1312,8 +1312,8 @@ local function ComputeRestrictedZones( RawParts)
                            -- aggiorno le info di rotazione
                            if res.nRotate > 0 then 
                               local nPartRot = EgtGetInfo( AngleClassification[nInd].PartId, "ROTATED", 'i') or 0
-                              local nTotRot = nPartRot + res.nRotate
-                              nTotRot = EgtIf( nTotRot < 360, nTotRot, nTotRot - 360)    
+                              local nTotRot = nPartRot - res.nRotate
+                              nTotRot = EgtIf( nTotRot < 0, nTotRot + 360, nTotRot)    
                               EgtSetInfo( AngleClassification[nInd].PartId, "ROTATED", nTotRot)
                               EgtSetInfo( AngleClassification[nInd].PartId, "MODIFIEDFORNEST", 1)
                            end                  
@@ -2065,13 +2065,13 @@ if bNestingOk then
                EgtSetInfo( nPartDuploId, "POSY", ptPos:getY() + dYCorr)
                
                local nPartRot = EgtGetInfo( nId, "ROTATED", 'i') or 0            
-               local nTotRot = dAngRot + nPartRot
-               nTotRot = EgtIf( nTotRot < 360, nTotRot, nTotRot - 360)
+               local nTotRot = dAngRot - nPartRot
+               nTotRot = EgtIf( nTotRot < 0, nTotRot + 360, nTotRot)
                EgtSetInfo( nPartDuploId, "ROT", nTotRot)
                
                local nPartFlip = EgtGetInfo( nId, "INVERTED", 'i')
                nPartFlip = EgtIf( nPartFlip == 180, 1, 0)
-               local nTotFlip = EgtIf( nPartFlip ~ nFlag, 180, 0)
+               local nTotFlip = EgtIf( nPartFlip ~= nFlag, 180, 0)
                EgtSetInfo( nPartDuploId, "FLIP", nTotFlip)
                            
             end