Bigger Thumb Screws

Thumb Screw/Custom.scad

@@ -0,0 +1,41 @@
+/*
+ * Created by:
+ * Thomas Buck <xythobuz@xythobuz.de> in April 2016
+ *
+ * Licensed under the Creative Commons - Attribution license.
+ */
+
+diameter = 10;
+slit = 1.1;
+slit_height = 2.1;
+height = 4.5;
+wall = 1.5;
+base_size = 20;
+base_height = 3;
+cut_out_count = 5;
+cut_out_factor = 0.35;
+$fn = 30;
+
+// -----------------------------------------------------------
+
+translate([0, 0, base_height])
+union() {
+    difference() {
+        cylinder(d = diameter + (2 * wall), h = height);
+        cylinder(d = diameter, h = height);
+    }
+
+    translate([-(slit / 2), -(diameter / 2), 0])
+        cube([slit, diameter, slit_height]);
+}
+
+difference() {
+    cylinder(d = base_size, h = base_height);
+    
+    // cut outs for fingers
+    for (i = [0 : cut_out_count]) {
+        rotate([0, 0, (360 / cut_out_count) * i])
+            translate([(base_size / 2), 0, 0])
+            cylinder(d = base_size * cut_out_factor, h = base_height);
+    }
+}

Thumb Screw/Thumb Screw.scad

@@ -6,12 +6,12 @@
  */
 
 // M2: 4; M3: 5.5; M4: 7; M5: 8
-nut_size = 5.5; // [1:50]
+nut_size = 7; // [1:50]
 nut_height = 2.5; // [0:50]
-base_size = 20; // [1:50]
+base_size = 30; // [1:50]
 base_height = 3; // [1:50]
 wall_size = 2.5; // [1:50]
-cut_out_factor = 0.3; // [0.0:1.0]
+cut_out_factor = 0.35; // [0.0:1.0]
 cut_out_count = 5; // [0:10]
 nut_size_buffer = 0.1; // [0.0:1.0]