added own OpenScad models

openscad/foreign/hdd-spool-holder/spool_adapter.scad

@@ -0,0 +1,28 @@
+//The inside hole size (diameter) of your filament spool in MM
+spool_inside_diameter = 38; //min/step/max: [0:0.5:100]
+//The total height of the spool adapter
+total_height=8.5; //min/step/max: [0:0.5:100]
+//The brim width -- how much lip to hold your spool
+brim_width=85; //min/step/max: [0:0.5:100]
+// the brim height -- how thick to the make the lip
+brim_height=3; //min/step/max: [0:0.5:100]
+//the size (diameter) of your HDD spindle / bearing -- what you mount the adapter to
+spindle_size=25; //min/step/max: [0:0.5:100]
+$fn=100;
+module main_spool() {
+    union() {
+        cylinder(r=brim_width/2, h=brim_height);
+        cylinder(r=spool_inside_diameter/2, h=total_height);
+    }
+}
+
+module hollow_center() {
+    translate([0,0,-.5]) {
+        cylinder(r=spindle_size/2, h=total_height+1);
+    }
+}
+
+difference() {
+    main_spool();
+    hollow_center();
+}