1 include <yenyalib.scad>
10 cone_angle = atan((outer_d-inner_d)/(2*cone_h));
15 blade_w = 4*inner_d/blades;
18 shield_r1 = inner_d/2 - blade_w/2*sin(blade_rot) - 1.5*wall;
19 shield_r2 = 1.1*shield_r1;
23 beam_l = inner_d/2 + 60;
25 beam_end_h = 0.35*beam_h;
27 for (angle = [0:30:360]) Rz(angle) {
29 linear_extrude(height = shield_h, twist = shield_twist,
30 center=false, scale=shield_r2/shield_r1) {
31 Ty(shield_r1) Rz(blade_rot) {
32 Sx(blade_w/blade_wall) circle(r=blade_wall/2);
33 Tx(-blade_w/3) Ty(blade_wall/2) Sx(0.5) circle(r=blade_wall/2);
36 // counter-direction struts
37 linear_extrude(height = shield_h, twist = -shield_twist,
38 center=false, scale=shield_r2/shield_r1)
40 Sx(blade1_w/blade_wall) circle(r=blade_wall/2);
46 cylinder(r1 = inner_d/2, r2 = outer_d/2, h = cone_h);
48 Tz(beam_w/3) Ry(90) Sx(3*beam_h/(2*beam_w))
49 cylinder(r = beam_w/2, h = beam_l);
53 Tz(-eps) cylinder(r1 = inner_d/2 - wall/cos(cone_angle),
54 r2 = outer_d/2 - wall/cos(cone_angle),
57 translate([-infty/2, -infty/2, -infty]) cube(infty);
59 translate([beam_l-beam_end_l, -beam_w/2, beam_end_h])
60 cube([beam_end_l+eps, beam_w, beam_h]);
62 Tx(beam_l-beam_w/2) Tz(-eps) cylinder(r=2.5, h = beam_end_h + 2*eps);
67 cylinder(r = inner_d/2, h = base_wall);
76 for (angle = [0:120:360]) Rz(angle) difference() {
78 Tx(clip_d/2) Sy(clip_r2/clip_r1)
79 cylinder(r = clip_r1, h = clip_h + wall);
80 Tx(clip_d/2) Ty(clip_r2-clip_end_r) difference() {
81 cylinder(r = clip_end_r, h = clip_h + wall);
82 translate([0, -2*clip_end_r, -eps])
83 cube([4*clip_end_r, 4*clip_end_r, clip_h + wall +2*eps]);
86 Tz(-eps) difference() {
87 cylinder(r = clip_d/2, h = clip_h+eps);
88 Ty(clip_r2-clip_end_r) Tz(-eps)
89 cube([clip_d, clip_d, clip_h+3*eps]);