diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_FBXexport.fbx b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_FBXexport.fbx
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.mtl b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.mtl
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.obj b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._Jet_1.obj b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._Jet_1.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._Jet_2.obj b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._Jet_2.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._crab-nebula.stl b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._crab-nebula.stl
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/__MACOSX/crab-nebula/._disk.obj b/3D Models/Crab Nebula/__MACOSX/crab-nebula/._disk.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/CrabNebulaXrayModel_FBXexport.fbx b/3D Models/Crab Nebula/crab-nebula/CrabNebulaXrayModel_FBXexport.fbx
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.mtl b/3D Models/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.mtl
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.obj b/3D Models/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/Jet_1.obj b/3D Models/Crab Nebula/crab-nebula/Jet_1.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/Jet_2.obj b/3D Models/Crab Nebula/crab-nebula/Jet_2.obj
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/crab-nebula.stl b/3D Models/Crab Nebula/crab-nebula/crab-nebula.stl
old mode 100644
new mode 100755
diff --git a/3D Models/Crab Nebula/crab-nebula/disk.obj b/3D Models/Crab Nebula/crab-nebula/disk.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_FBXexport.fbx b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_FBXexport.fbx
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.mtl b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.mtl
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.obj b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._CrabNebulaXrayModel_OBJexport.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._Jet_1.obj b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._Jet_1.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._Jet_2.obj b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._Jet_2.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._crab-nebula.stl b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._crab-nebula.stl
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._disk.obj b/3D Printing/Crab Nebula/__MACOSX/crab-nebula/._disk.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/CrabNebulaXrayModel_FBXexport.fbx b/3D Printing/Crab Nebula/crab-nebula/CrabNebulaXrayModel_FBXexport.fbx
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.mtl b/3D Printing/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.mtl
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.obj b/3D Printing/Crab Nebula/crab-nebula/CrabNebulaXrayModel_OBJexport.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/Jet_1.obj b/3D Printing/Crab Nebula/crab-nebula/Jet_1.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/Jet_2.obj b/3D Printing/Crab Nebula/crab-nebula/Jet_2.obj
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/crab-nebula.stl b/3D Printing/Crab Nebula/crab-nebula/crab-nebula.stl
old mode 100644
new mode 100755
diff --git a/3D Printing/Crab Nebula/crab-nebula/disk.obj b/3D Printing/Crab Nebula/crab-nebula/disk.obj
old mode 100644
new mode 100755