diff --git a/LuaLibs/AddManData.lua b/LuaLibs/AddManData.lua
index f153b25..74eef84 100644
--- a/LuaLibs/AddManData.lua
+++ b/LuaLibs/AddManData.lua
@@ -24,8 +24,8 @@ WIPE_CRV = "Wipe"
 FRAME_PART = "FramePart"
 START_POINT = "StartPoint"
 
-MIN_LEN = 1e-3
-MIN_AREA = 1e-6
+MIN_LEN = 0.1
+MIN_AREA = 0.01
 
 -- Parametri di lavorazione
 SEC_DEFAULT = "Default"
diff --git a/LuaLibs/CalcSolids.lua b/LuaLibs/CalcSolids.lua
index 8c83c5c..dfb67ca 100644
--- a/LuaLibs/CalcSolids.lua
+++ b/LuaLibs/CalcSolids.lua
@@ -1,4 +1,4 @@
--- CalcSolids.lua by Egaltech s.r.l. 2022/04/19
+-- CalcSolids.lua by Egaltech s.r.l. 2022/07/01
 -- Calcolo percorsi di lavoro per Stampa 3d
 
 -- Tabella per definizione modulo
@@ -138,10 +138,16 @@ local function CreateSolidFromCurve( nCrvId, nSolidGrp, LayerParams)
       Color = EgtStdColor( 'OLIVE')
    end
 
-   local nParts = EgtIf( nType == TYPE.LINK or nType == TYPE.COASTING, 1, 10)
+   local nParts = 1
+   local LEN_REF = 100
+   local dLen = EgtCurveLength( nCrvId)
+   if dLen > LEN_REF and nType ~= TYPE.LINK and nType ~= TYPE.COASTING then
+      nParts = EgtClamp( floor( dLen / LEN_REF), 1, 10)
+   end
 
    local nCopyId = EgtCopyGlob( nCrvId, nSolidGrp)   
    local nId = EgtSplitCurve( nCopyId, nParts)
+   if not nId then return false end
    local bOk = true
    for nInd = 0, nParts - 1 do
       local nGuideId = nId + nInd