first commit

scad/z-screw_pointer.scad

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+//
+// Mendel90
+//
+// GNU GPL v2
+// nop.head@gmail.com
+// hydraraptor.blogspot.com
+//
+// Pointers on the Z screws
+//
+include <conf/config.scad>
+
+function z_screw_pointer_height() = 5;
+
+module z_screw_pointer_stl() {
+    wall = 2.4;
+    height = z_screw_pointer_height();
+
+    inner_rad = (((Z_screw_dia == 6) ? M6_tap_radius : M8_tap_radius) + Z_bar_dia / 2) / 2; // half depth thread
+    outer_rad = inner_rad + wall;
+
+    pointer = z_bar_offset() - Z_bar_dia / 2 - 1;
+
+    stl("z_screw_pointer");
+    difference() {
+        union() {
+            linear_extrude(height = wall)
+                hull() {
+                    circle(r = outer_rad, center = true);
+                    translate([pointer - filament_width, 0, 0])
+                        square(filament_width * 2, center = true);
+                }
+            translate([0,0, eta])
+                cylinder(r = outer_rad, h = height);
+        }
+        poly_cylinder(r = inner_rad, h = 2 * height + 1, center = true);
+    }
+}
+
+z_screw_pointer_stl();