more designs

CNC_T_nut.scad

@@ -0,0 +1,44 @@
+printer_offset = 0.5;
+top_slot_width = 8;
+top_slot_height = 2;
+middle_slot_width = 14;
+middle_slot_height = 7;
+
+length = 20;
+
+module T_nut(){
+    translate([-middle_slot_width/2, length/2, middle_slot_height-printer_offset])
+    rotate([90, 0, 0])
+    linear_extrude(length)
+    offset(delta = -printer_offset/3)
+    polygon(
+        [
+            [0,0],
+            [0, -middle_slot_height],
+            [middle_slot_width, -middle_slot_height],
+            [middle_slot_width, 0],
+            [middle_slot_width - (middle_slot_width - top_slot_width)/2, 0],
+            [middle_slot_width - (middle_slot_width - top_slot_width)/2, top_slot_height],
+            [middle_slot_width - (middle_slot_width - top_slot_width)/2 - top_slot_width, top_slot_height],
+            [middle_slot_width - (middle_slot_width - top_slot_width)/2 - top_slot_width, 0]
+        ]
+    );
+}
+
+module cylinder_outer(height,radius,fn){
+   fudge = 1/cos(180/fn);
+   cylinder(h=height,r=radius*fudge, center=true, $fn=fn);}
+
+module hex(size, height){
+    cylinder_outer(height, size/2, 6);
+}
+
+difference(){
+    T_nut();
+    cylinder(r=3+printer_offset/2, h=100, center=true, $fn=30);
+
+    translate([0,0,-0.3])
+    rotate([0,0,30])
+    hex(10, 10);
+}
+