diff --git a/LuaLibs/ProcessDtMortise.lua b/LuaLibs/ProcessDtMortise.lua
index d15c819..aa14f59 100644
--- a/LuaLibs/ProcessDtMortise.lua
+++ b/LuaLibs/ProcessDtMortise.lua
@@ -111,9 +111,6 @@ local function CalcTopPath( nProcId, AuxId, nAddGrpId, dAltMort, dSideAng, b3Sol
    EgtAddCurveCompoLineTg( NewAuxId, 100, false)
    EgtAddCurveCompoLineTg( NewAuxId, 100, true)
    EgtMergeCurvesInCurveCompo( NewAuxId)
-   -- eseguo traslazione e offset per portarla sul top
-   local vtMove = EgtCurveExtrusion( AuxId, GDB_RT.GLOB) * ( dAltMort - 10 * GEO.EPS_SMALL)
-   EgtMove( NewAuxId, vtMove, GDB_RT.GLOB)
    local dOffset = dAltMort * tan( dSideAng)
    if not EgtOffsetCurve( NewAuxId, dOffset) then return end
    -- la limito entro la trave
@@ -121,6 +118,9 @@ local function CalcTopPath( nProcId, AuxId, nAddGrpId, dAltMort, dSideAng, b3Sol
    local vtBoxDiag = b3Solid:getMax() - b3Solid:getMin()
    local nCount
    NewAuxId, nCount = EgtTrimFlatCurveWithBox( NewAuxId, refBox, vtBoxDiag, true, true, GDB_RT.GLOB)
+   -- eseguo traslazione e offset per portarla sul top
+   local vtMove = EgtCurveExtrusion( AuxId, GDB_RT.GLOB) * ( dAltMort - 10 * GEO.EPS_SMALL)
+   EgtMove( NewAuxId, vtMove, GDB_RT.GLOB)
    -- se divisa in più parti, le unisco congiungendole con segmenti
    if nCount > 1 then
       if EgtGetType( NewAuxId) ~= GDB_TY.CRV_COMPO then