diff --git a/Brompton_Urban_Bag/Knopf.scad b/Brompton_Urban_Bag/Knopf.scad
deleted file mode 100644
index 59b8fc3..0000000
--- a/Brompton_Urban_Bag/Knopf.scad
+++ /dev/null
@@ -1,80 +0,0 @@
-use <threads-library-by-cuiso-v1.scad>
-
-//
-translate([0,40,0])
-difference(){
-union() {
-    translate ([0,0,1]) thread_for_nut(diameter=8, length=2); 
-cylinder(d=33,h=1);
-}
-for ( i = [1:10:360])
-  rotate(i,[0,0,1]){
-     translate([10,10,0]) cylinder(d=2, h=2);
-  }
-for ( i = [1:10:360])
-  rotate(i,[0,0,1]){
-     translate([9,8,0]) cylinder(d=2, h=2);
-  }
-for ( i = [1:12:360])
-  rotate(i,[0,0,1]){
-     translate([8,6,0]) cylinder(d=2, h=2);
-  }
-for ( i = [1:14:360])
-  rotate(i,[0,0,1]){
-     translate([7,4,0]) cylinder(d=2, h=2);
-  }
-}
-
-// socket
-difference(){
-color("#0EC11E")
-union() {
-cylinder(d=33, h =1);
-difference(){
-    cylinder(d=19, h=6, d2=14);
-    union(){
-        cylinder(d=10, h=7);
-        translate([-5,0,0]) rotate([0,0,0]) cube([10,10,7]);
-    };
-}
-}
-
-color("#ff00ff")
-union() {
-rotate([180,0,0])
-translate([0,0,-9])
-union() {
-cylinder(d=19, h=1);
-translate([0,0,1]) 
-  cylinder(d=10, h=1);
-translate([0,0,2])
-  cylinder(d=8.5, h=5.5);
-translate([0,0,7])
-  cylinder(d=11, h=1);
-translate([-5.5,-20,7])
-  cube([11,20,1]);
-}
-}
-translate ([0,0,-1]) thread_for_nut(diameter=8, length=2); 
-for ( i = [1:10:360])
-  rotate(i,[0,0,1]){
-     translate([10,10,0]) cylinder(d=2, h=2);
-  }
-}
-
-//// knob
-//color("#ff00ff")
-//union() {
-//rotate([180,0,0])
-//translate([0,0,-9])
-//union() {
-//cylinder(d=19, h=1);
-//translate([0,0,1]) 
-//  cylinder(d=10, h=1);
-//translate([0,0,2])
-//  cylinder(d=8.5, h=5.5);
-//translate([0,0,7])
-//  cylinder(d=11, h=1);
-//}
-//}
-