DataBeam :

- corretta scelta lavorazione per macchine con due teste solo da sopra (PF e PFrl)
- modifica a LapJoint trasversale stretto, se la lavorazione non genera toolpath allora si passa a tentare con la lama
- in Split aggiunto controllo per evitare sqrt di valori negativi.

LuaLibs/ProcessLapJoint.lua

@@ -3683,13 +3683,17 @@ local function MakeByPockets( Proc, nPhase, nRawId, nPartId, nChamfer, dDepthCha
             sNotes = sNotes .. 'VMRS=0;'
             EgtSetMachiningParam( MCH_MP.USERNOTES, sNotes)
             -- eseguo
-            if not ML.ApplyMachining( true, false) then
+            if not ML.ApplyMachining( true, false) or EgtIsMachiningEmpty() then
                -- provo ad allargare leggermente la tasca
                EgtSetMachiningParam( MCH_MP.OFFSR, -0.1)
                if not ML.ApplyMachining( true, false) then
                   local _, sErr = EgtGetLastMachMgrError()
                   EgtSetOperationMode( nMchFId, false)
                   return -1, sErr
+               elseif EgtIsMachiningEmpty() then
+                  EgtRemoveOperation( nMchFId)
+                  local sErr = 'Impossible to machine (empty toolpath)'
+                  return -3, sErr
                end
             end
             -- se posso applicare la svuotatura sul lato opposto
@@ -5238,7 +5242,9 @@ local function MakeMoreFaces( Proc, nPhase, nRawId, nPartId, dOvmHead, bSinglePa
                            end
                            nOk, sErr, dDimMin, dDimMax, dDepth, vtOrtho, nLundIdFace, dDiamTool, bDoubleSide, nPathInt, nSurfInt, bOneShot, bMillDown, nFirstMachId, 
                            bOrthoFaces = MakeByPockets( Proc, nPhase, nRawId, nPartId, nChamfer, dDepthCham, nAddGrpId, sMyMchFind, bIs3Faces, b3Solid, bOrthoFacesMaster, bMillDown, bSetOpenBorders, bIsU, bIsL)
-                           if nOk == -2 then
+                           if nOk == -3 then
+                              bTryWithBlades = true
+                           elseif nOk == -2 then
                               if not sMchFind then 
                                  sMchFind = sMchFindBackUp 
                               end