bugfix: no support for too low models
bugfix: no support for too low models

alex1818/CuraEngine,fxtentacle/CuraEngine,ROBO3D/CuraEngine,patrick3coffee/CuraTinyG,ROBO3D/CuraEngine,fxtentacle/CuraEngine,alephobjects/CuraEngine,jacobdai/CuraEngine-1,patrick3coffee/CuraTinyG,uus169/CuraEngine,patrick3coffee/CuraTinyG,pratikshashroff/pcura,jacobdai/CuraEngine-1,pratikshashroff/pcura,ROBO3D/CuraEngine,markwal/CuraEngine,Ultimaker/CuraEngine,mspark93/CuraEngine,markwal/CuraEngine,alephobjects/CuraEngine,electrocbd/CuraEngine,jacobdai/CuraEngine-1,alephobjects/CuraEngine,totalretribution/CuraEngine,totalretribution/CuraEngine,alex1818/CuraEngine,electrocbd/CuraEngine,mspark93/CuraEngine,uus169/CuraEngine,uus169/CuraEngine,totalretribution/CuraEngine,pratikshashroff/pcura,Ultimaker/CuraEngine,markwal/CuraEngine,fxtentacle/CuraEngine,alex1818/CuraEngine,mspark93/CuraEngine,electrocbd/CuraEngine