added own OpenScad models

openscad/own/expressCardHolder/stl/expressCardHolder.stl

@@ -0,0 +1,18 @@
+
+
+module cube_sd(){
+	cube([33,25,5]);
+}
+
+module cube_usd(){
+	cube([16,12.5,5]);
+}
+
+difference(){
+	import("expressCardHolder.stl");
+	translate([8,0.75,1]){cube_sd();}
+	translate([8,27,1]){cube_sd();}
+	translate([48,21,2]){#cube_usd();}
+	translate([48,39.5,2]){#cube_usd();}
+
+}