3 // Print, for each end:
13 enable_head_cups = false;
15 main_dia = 71.2 + 0.50 - 2.26;
17 top_thick_by_oring = 3.0;
24 rivet_posn = 6.0 + 0.30;
26 rivet_width = 4.15 + 1.0;
27 rivet_tall = 5.51 + 1.49;
29 over_rivet_wall = 1.0;
31 inside_rivet_gap = 1.5;
35 bayo_interf_width = 2.0;
36 bayo_interf_slope = 0.5;
41 oring_upper_embed_angle = 80;
42 oring_compress = 0.1; // proportion
43 oring_compress_more = 0.2;
56 bayo_slice_size = coarse ? 5 : 1;
58 brace_hole_width = 1.0;
59 brace_above_below = 1.2;
60 brace_end_shorter = 0.3;
68 strap_loop_inside = 10;
69 strap_loop_strlen = 10;
70 strap_loop_elevation = 45;
72 sm_inner_circum = 218 - 1.90 - 1.00 - 0.50;
76 sm_bolt_dia = 3.5 + 0.1;
78 sm_bolt_head_dia = 6.94 + 1.0;
79 sm_bolt_head_thick = 2.14;
80 sm_bolt_nut_width = 5.89 + 0.25;
81 sm_bolt_nut_thick = 3.68;
82 sm_bolt_tighten_allow = 2.0;
84 sm_bolt_y_clear = 0.75;
90 wm_screw_dia = 4.5; // XXX
91 wm_screwdriver_dia = 6.0; // XXX
92 wm_screw_around = 4.0; // XXX
94 wm_screw_head = 7.5; // XXX
97 wmb_screw_head_dia = 10; // XXX
98 wmb_screw_around_x = 4; // XXX
99 wmb_screw_around_z = 6; // XXX
100 wmb_screw_depth_min = 10;
101 web_screw_len = 15 + 1; // XXX
102 wmb_nut_across = 8; // XXX
103 wmb_nut_around_min = 2; // XXX
104 wmb_nut_behind_min = 5;
105 wmb_nut_th = 4; // XXX
106 wmb_mount_wall = 4.5;
107 wmb_mount_gap_xy = 0.5;
111 catch_stalk_len = 50;
115 catch_pin_slop = 0.25; // each side, and above
116 catch_pin_slop_x_extra = 0.0; // only on one side
117 catch_stalk_above_gap = 1.5;
118 catch_stalk_eff_bend_rad = catch_stalk_len * 0.75;
120 catch_strap_width = 12;
121 catch_stalk_base_width = 15;
124 catch_knob_above_gap = 5;
125 catch_knob_height = 3.0;
127 catch_stalk_below_gap = 1.0;
128 catch_stalk_beside_gap = 2.0;
134 bayo_entry_x = bayo_entry;
135 bayo_entry_z = bayo_entry;
136 bayo_inramp_x = bayo_inramp;
137 bayo_inramp_z = bayo_inramp;
139 oring_mid_dia = oring_bore + oring_thick;
140 oring_outer_dia = oring_mid_dia + oring_thick;
142 oring_oblate = (1 - oring_compress);
144 oring_y_rad = oring_thick/2 * oring_oblate;
145 oring_x_rad = oring_thick/2 / oring_oblate;
147 by_oring_z = oring_y_rad * (1 + cos(oring_upper_embed_angle));
149 side_height = rivet_posn + bayo_behind + rivet_thick/2;
150 side_thick = rivet_tall + over_rivet_wall;
152 top_z = top_thick_by_oring + oring_y_rad + by_oring_z;
154 middle_bot_z = top_z - top_thick_middle;
156 bayo_top_z = bayo_behind + bayo_gap;
158 bayo_nom_rad = main_dia/2 + side_thick;
159 bayo_real_rad = main_dia/2 + rivet_tall;
161 rivet_entry_width = rivet_width + side_rivet_gap;
163 jig_mark_rad = jig_mark + main_dia/2 + jig_thick;
165 handling_dia = oring_bore + oring_thick*2 + min_wall*2;
168 sm_inner_rad = (sm_inner_circum + sm_bolt_tighten_allow/2) / TAU;
169 sm_outer_rad = sm_inner_rad + sm_main_thick;
171 wm_main_width = sm_main_width;
172 wm_y_min = sqrt( pow(sm_inner_rad, 2) -
173 pow(sm_inner_rad - (wm_thick - sm_main_thick), 2) );
174 wm_y_screw = wm_y_min + wm_screw_around + wm_screw_dia/2;
175 wm_y_max = wm_y_screw + wm_screw_dia/2 + wm_screw_around;
176 wm_y_slotc_screw = wm_y_screw + wm_screw_slot/2;
177 wm_y_slot1_screw = wm_y_screw + wm_screw_slot;
178 wm_y_slot1_max = wm_y_max + wm_screw_slot;
179 wm_z_slot0_screw = wm_main_width + wm_screwdriver_dia/2;
180 wm_z_slotc_screw = wm_z_slot0_screw + wm_screw_slot/2;
181 wm_z_slot1_screw = wm_z_slot0_screw + wm_screw_slot;
182 wm_z_max = wm_z_slot1_screw + wm_screw_around;
184 wmb_mount_cut_rad = sm_outer_rad + wmb_ring_gap;
185 wmb_nut_rad = wmb_nut_across / cos(30) * 0.5;
186 wmb_x_screw_plus_around_r = max(
187 wmb_screw_around_x + wmb_screw_dia/2,
188 wmb_nut_around_min + wmb_nut_across/2
190 wmb_x_screw = -sm_outer_rad + wmb_x_screw_plus_around_r;
191 wmb_x_outer = -sm_outer_rad + wmb_x_screw_plus_around_r * 2;
192 function wmb_screw_thing_y_min(dia) = sqrt(
193 pow(wmb_mount_cut_rad, 2) -
194 pow(wmb_x_screw + dia/2, 2)
196 wmb_y_screw_end = wmb_screw_thing_y_min(wmb_screw_dia);
197 wmb_y_nut_min = wmb_screw_thing_y_min(wmb_nut_across + wmb_nut_around_min*2);
198 wmb_y_mount_max = max(
199 wmb_y_nut_min + wmb_nut_th + wmb_nut_behind_min,
200 wmb_y_screw_end + wmb_screw_depth_min
203 wmb_screw_around_z + wmb_screw_dia/2,
204 wmb_nut_around_min + wmb_nut_rad
206 wmb_z_max = wmb_z_screw * 2;
207 wmbb_y_max = wmb_y_mount_max + wmb_mount_gap_xy + wmb_mount_wall;
208 wmbb_x_outer = wmb_x_outer - (wmb_mount_gap_xy + wmb_mount_wall);
209 wmbb_z_min = -20; // XXX
211 smc_pos = [ 0, sm_inner_rad, 0 ];
213 smc_bolt_nut_dia = sm_bolt_nut_width / cos(30);
214 smc_bolt_nut_eff_thick = sm_bolt_nut_thick + sm_bolt_tighten_allow;
216 smc_bolt_y = sm_bolt_dia/2 + sm_bolt_y_clear;
217 smc_max_y = smc_bolt_y + sm_bolt_y_over
218 + max(sm_bolt_head_dia/2, smc_bolt_nut_dia/2);
219 smc_cnr_c_x = sm_bolt_shaft/2 - sm_closure_cnr
220 + sm_bolt_head_thick/2 + smc_bolt_nut_eff_thick/2;
222 catch_cr = catch_knob_dia/2 + catch_stalk_beside_gap;
223 catch_strap_thick = sm_main_thick;
225 echo("R ", sm_inner_rad, bayo_real_rad, bayo_nom_rad);
227 $fs= coarse ? 2.5 : 0.5;
230 include <poster-tube-lid-parametric.scad>
232 // bayonet definition
234 bayo_a = [ bayo_entry_x, 0 ];
235 bayo_p = [ 0, bayo_entry_z ];
236 bayo_n = [ 0, bayo_behind-bayo_inramp_z ];
237 bayo_m = [ bayo_inramp_x, bayo_behind ];
238 bayo_l = bayo_m + bayo_interf * [ 1/bayo_interf_slope, 1 ];
239 bayo_k = bayo_l + [ bayo_interf_width, 0 ];
240 bayo_j = bayo_k + bayo_interf * [ 1/bayo_interf_slope, -1 ];
241 bayo_i = bayo_j + [ rivet_width + inside_rivet_gap, 0 ];
242 bayo_h = [ bayo_i[0], bayo_behind + bayo_gap + bayo_interf ];
243 bayo_g = [ bayo_m[0] - rivet_width, bayo_h[1] ];
245 bayo_e = [-bayo_p[0], bayo_p[1]] - [rivet_entry_width,0];
246 bayo_d = [-bayo_a[0], bayo_a[1]] - [rivet_entry_width,0];
247 bayo_c = bayo_d + [0,-5];
248 bayo_b = bayo_a + [0,-5];
250 bayo_f = [ bayo_e[0], bayo_g[1] + (bayo_e[0] - bayo_g[0]) ];
252 bayo_polygon = [ bayo_a,
272 cppxC = 0.41 * sm_inner_rad * TAU;
276 cpp_adj = (bayo_n[0] - bayo_f[0]) * (1 - sm_inner_rad / bayo_nom_rad);
277 // radius scaling due to nom and actual radius difference in
278 // bayo entry construction
280 cppa = bayo_f + [1,-1] * catch_pin_slop + [1,0] * cpp_adj;
281 cppb = bayo_g + [1,-1] * catch_pin_slop + [1,0] * cpp_adj;
283 - catch_pin_slop - catch_pin_slop_x_extra,
284 -catch_stalk_above_gap ];
285 cppi = [ cppa[0], cppd[1] ];
286 cppc = [ cppd[0], cppb[1] ];
287 cpph = cppd + [0,-1] * catch_stalk_h;
288 cppe = cppd + [0,-1] * (catch_knob_above_gap + catch_knob_dia/2);
289 cppf = [ cppa[0], cppe[1] ];
290 cppg = [ cppa[0], cpph[1] ];
291 cppB = 0.5 * (cppf + cppe);
293 echo("RR", sm_inner_rad / bayo_nom_rad);
295 // catch assembly depression below pin
297 cppy6 = cppB[1] - (catch_knob_dia/2
298 + (cppc[1] - cppd[1])
299 + catch_stalk_below_gap);
300 cpp7 = [ cppB[0], cppy6 + catch_cr ];
301 cpp11 = cpp7 + [1,0] * catch_cr;
302 cppy9 = cppy6 + catch_strap_width * 1/3;
303 cpp9 = [ cpp7[0] + catch_cr * 2, cppy9 ];
304 cpp8 = cpp9 + [0,-1] * catch_cr;
305 cpp10 = cpp8 + [-1,0] * catch_cr;
306 cppC = [ cppxC, cpp9[1] ];
307 cppD = cppC + [0,-1] * catch_strap_width;
309 // catch assembly stalk and so on
311 catch_cr3 = catch_cr + catch_stalk_h;
313 cppF = [ cppg[0] - catch_stalk_eff_bend_rad, cppd[1] ];
314 cpp4 = [ cppg[0] - catch_stalk_len, cpph[1] ] + [1,-1] * catch_cr;
315 cpp5 = [ cpp4[0], cppC[1] + catch_cr ];
316 cpp2 = cpp5 + [-1,0] * (catch_cr * 2 + catch_stalk_base_width);
317 cpp2r = cpp2 + [1,0] * catch_cr;
318 cpp2d = cpp2 + [0,-1] * catch_cr;
319 cpp3 = [ cpp2[0] + catch_cr + catch_cr3, cppd[1] - catch_cr3 ];
320 cppA = [ -cppxC, cpp9[1] ];
321 cppE = [ cppA[0], cppD[1] ];
323 catch_assembly_dy = -cppy9 + catch_strap_width;
326 module MainProfile(){
327 main_cnr_pos = [ side_thick, top_z ] - [1,1]*main_cnr;
330 translate(main_cnr_pos){
333 circle(r = main_cnr);
334 circle(r = main_cnr * 0.5);
339 polygon([[ -top_middle_dr, middle_bot_z ],
340 [ -top_middle_dr, top_z ],
341 [ main_cnr_pos[0], top_z ],
342 [ side_thick, main_cnr_pos[1] ],
343 [ side_thick, -side_height ],
344 [ side_taper, -side_height ],
347 [ -oring_x_rad, by_oring_z ],
351 translate([ oring_mid_dia/2 - main_dia/2, 0 ])
353 translate([ 0, oring_y_rad ])
354 scale([ 1/oring_oblate * (oring_compress_more+1) , oring_oblate ])
355 circle(oring_thick/2);
356 translate([ 0, oring_y_rad*2 - oring_thick/2 ])
357 circle(oring_thick/2);
362 module StrapLoopProfile(){
363 circle(r = strap_loop_thick/2);
366 module StrapLoop(){ ////toplevel
367 bigrad = strap_loop_inside/2 + strap_loop_thick/2;
368 extralen = strap_loop_thick * 5;
371 rotate([strap_loop_elevation, 0,0]){
372 for (x= [ -1, +1 ] * bigrad) {
373 translate([x, -extralen, 0])
375 linear_extrude(height= extralen + strap_loop_strlen + 0.1,
379 translate([0, strap_loop_strlen, 0]){
381 rotate_extrude(convexity=10)
382 translate([bigrad, 0,0])
385 cube([100,100,100], center=true);
389 translate([0, 50, 0])
390 cube(100, center=true);
394 module RotateProjectSlice(offset, slice_size, nom_rad, real_rad){
395 // nom_rad > real_rad
396 rotate([0,0, atan2(offset, nom_rad) ]){
398 translate([-offset, -10, 0])
400 linear_extrude(height= nom_rad*2, convexity=50)
402 translate([0,0, -25])
403 cylinder(h=50, r= real_rad);
404 translate([0,0, -25])
405 linear_extrude(height= 50, convexity=50)
407 [ -slice_size, -real_rad*2 ],
408 [ +slice_size, -real_rad*2 ] ]);
413 module RotateProject(x_min, x_max, slice_size, nom_rad, real_rad){
414 offs = [ for (i=[ x_min :
416 x_max + slice_size ]) i ];
419 RotateProjectSlice(off, slice_size, nom_rad, real_rad)
423 module BayonetCutout(){
424 RotateProject(bayo_c[0], bayo_i[0], bayo_slice_size,
427 translate([-0.5 * (bayo_a[0] + bayo_d[0]), 0])
428 polygon(bayo_polygon, convexity=10);
431 module ProfilesDemo(){ ////toplevel
432 translate([-10,0]) MainProfile();
433 translate([+10, -side_height]) polygon(bayo_polygon, convexity=10);
436 module LimitForHandling(){ ////toplevel
437 hull() for (r=[0,180])
441 rotate([0,0, rs * handling_angle/2]) {
442 translate([rs * xd * main_dia/2 * tan(handling_angle/2),
443 main_dia/2 + side_thick - main_cnr,
446 cylinder(r= main_cnr, h=50);
453 hull() rotate_extrude(convexity=10){
454 translate([ handling_dia/2 - main_cnr, top_z - main_cnr ]) {
455 circle(r = main_cnr);
456 mirror([0,1]) square([ main_cnr, 50 ]);
459 //cylinder(r= handling_dia/2, h=20);
462 module Cover(){ ////toplevel
463 render() difference(){
466 rotate_extrude(convexity=10)
467 translate([main_dia/2, 0])
469 translate([0,0, middle_bot_z])
470 cylinder(h= top_thick_middle, r = main_dia/2 - top_middle_dr + 1);
476 translate([0,0, -side_height])
478 rotate([0,0, r + asin((-oring_rm_beside) / (main_dia/2))])
480 oring_mid_dia/2 + oring_thick/4 * oring_rm_scale,
482 rotate([-oring_rm_angle, 0, 0])
484 cylinder(r = oring_thick/4 * oring_rm_scale, h=20);
486 for (r=[0 : 60 : 179]) {
488 height = top_thick_middle - brace_above_below*2;
489 translate([0,0, middle_bot_z + brace_above_below + height/2 ])
490 cube(center=true, [ oring_bore - brace_end_shorter,
491 brace_hole_width, height ]);
495 if (enable_head_cups)
498 translate([-implheadcup_large_dia * .5 - implheadcup_thick/2,
499 -implheadcup_large_dia * .0,
503 // translate(strap_loop_thick * [-0.5, 0, +1])
504 // translate([handling_dia/2, 0, -side_height])
505 // rotate([0,180,0]) rotate([0,0,90])
510 translate([0,0, -10])
511 cylinder(r= main_dia/2 - jig_rim, h=20);
514 module Jig(){ ////toplevel
517 translate([0,0, -side_height]){
518 cylinder(r= main_dia/2 + jig_thick, h= side_height + jig_thick);
520 translate([-jig_mark_rad, 0, jig_thick - jig_mark])
521 cube([jig_mark_rad*2, jig_mark, jig_mark]);
523 translate([0,0, -side_height-1])
524 cylinder(r= main_dia/2, h= side_height + 1);
526 translate([0,0, -rivet_posn])
528 translate([0,0, -100])
529 cylinder(r= jig_hole_dia/2, h = 200);
533 module CoverPrint(){ ////toplevel
534 rotate([0,180,0]) Cover();
537 module CoverTest2(){ ////toplevel
544 module CoverTest1(){ ////toplevel
548 for (r= [ 40, 147 ]){
550 translate([0,0, -10]) {
551 cube([ main_dia*3, main_dia * .53, 18], center=true);
555 // translate([ 50, 0, 0 ])
557 // strap_loop_inside + strap_loop_thick*2 + 1,
564 module ImplHeadCupTest(){ ////toplevel
571 module SomeStrap(width, cut_width=0){
572 // children(0) is to add, (1) subtract
575 cylinder(r=sm_outer_rad, h=width);
576 StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr,
583 cylinder(r=sm_inner_rad, h=max(width+2, cut_width));
585 StrapMountBolt(10, width);
587 cube([ sm_bolt_tighten_allow, 40,100 ], center=true);
592 module StrapMountBolt(l_delta, strap_width){ ///toplevel
593 // positioned relative to smc_pos
594 translate([(smc_bolt_nut_eff_thick - sm_bolt_head_thick)/2,
597 translate([ -sm_bolt_shaft/2-1, 0,0 ]){
598 rotate([0,90,0]) cylinder(r= sm_bolt_dia/2, h= sm_bolt_shaft+2);
600 translate([ -sm_bolt_shaft/2, 0,0 ])
602 cylinder($fn=6, r=smc_bolt_nut_dia/2,
603 h=smc_bolt_nut_eff_thick + l_delta);
604 translate([ sm_bolt_shaft/2, 0,0 ])
606 cylinder(r=sm_bolt_head_dia/2, h=sm_bolt_head_thick + l_delta);
610 module StrapMountProtrusion(half_x, max_y, cnr, width){
612 linear_extrude(height=width, convexity=10){
614 for (m = [0,1]) mirror([m,0,0]) {
615 translate([-(half_x - cnr), max_y - cnr])
617 translate([-half_x, -sm_inner_rad])
625 module StrapMount(){ ////toplevel
626 SomeStrap(sm_main_width){
628 StrapMountProtrusion(strap_loop_inside/2 + strap_loop_thick,
633 [0,0, sm_main_width] +
634 strap_loop_thick * [ 0, 0.5, -1.0 ])
641 module WallScrewHoleSlot(){ ////toplevel
642 ds = [-1,+1] * wm_screw_slot/2;
643 linextr_x_yz(-(wm_thick + 1), 1) {
647 circle(r = wm_screw_dia/2);
652 translate([0, d, 0]){
654 circle(r = wm_screw_head/2);
655 linextr_x_yz(-(wm_screw_head - wm_screw_dia)/2, 0)
656 circle(r = wm_screw_dia/2);
662 module WallMountMounts(){
663 linextr(0, wm_z_max){
664 translate([ -sm_outer_rad, 0 ])
665 rectfromto([ 0, -wm_y_max ],
666 [ wm_thick, wm_y_slot1_max ]);
669 module WallMountScrewHoles(){
670 translate([ -sm_outer_rad + wm_thick, 0, wm_z_slotc_screw]) {
671 translate([ 0, wm_y_slotc_screw, 0 ])
673 translate([ 0, -wm_y_slotc_screw, 0 ])
679 module WallMount(){ ////toplevel
680 SomeStrap(sm_main_width, wm_z_max + 2){
682 WallMountScrewHoles();
686 module WallMountBaseRingCut(){
687 circle(r = wmb_mount_cut_rad);
690 module WallMountBaseMounts(){
691 linextr(0, wmb_z_max) {
693 rectfromto([ -sm_outer_rad, -wmb_y_mount_max ],
694 [ wmb_x_outer, +wmb_y_mount_max ]);
695 WallMountBaseRingCut();
700 // screws, nuts, slots for nuts to go down into
701 module WallMountBaseScrewsEtc(){ ////toplevel
704 translate([wmb_x_screw, 0, wmb_z_screw]) {
705 linextr_y_xz(wmb_y_screw_end,
706 wmb_y_screw_end + 100) // XXX change 100
707 circle(r = wmb_screw_dia/2);
708 linextr_y_xz(wmb_y_screw_end + web_screw_len,
709 wmb_y_screw_end + 100) // XXX change 100
710 circle(r = wmb_screw_head_dia/2);
711 linextr_y_xz(wmb_y_nut_min,
712 wmb_y_nut_min + wmb_nut_th){
715 circle(r = wmb_nut_rad, $fn = 6);
716 translate([0, 100]) // XXX change 100
717 square(wmb_nut_across, center=true);
725 module WallMountForBase(){ ////toplevel
726 SomeStrap(sm_main_width, wm_z_max + 2){
729 WallMountBaseMounts();
732 WallMountScrewHoles();
733 WallMountBaseScrewsEtc();
738 module WallMountBase(){ ////toplevel
739 linextr(wmbb_z_min, wmb_z_max) {
741 rectfromto([ 0, -wmbb_y_max ],
742 [ wmbb_x_outer, +wmbb_y_max ]);
743 WallMountBaseRingCut();
748 module WallMountForBaseDemo(){ ////toplevel
750 color("blue") WallMountBase();
751 %WallMountBaseScrewsEtc();
754 module CatchAssemblyCoreProfile(){
758 translate(cpp3) circle(r= catch_cr3);
777 translate(cpp8) circle(r= catch_cr);
780 translate(cpp4) circle(r= catch_cr);
781 translate(cpp5) circle(r= catch_cr);
782 translate(cpp7) circle(r= catch_cr);
790 translate(cpp2) circle(r= catch_cr);
792 // if cpp11 is above cpp10, the subtracted hull above
793 // can go down too far. Ensure we do not cut off below cppy6.
798 [ cpp7[0] - catch_cr, cppy6 ],
803 module CatchTipProfile(dy){
808 // circle(r = dist2d(cppF, cppd));
809 //circle(r = dist2d(cppF, cppa));
820 module CatchHeadProfile(){
830 module CatchCore(){ /////toplevel
831 linear_extrude(height=catch_strap_thick, convexity=10)
832 CatchAssemblyCoreProfile();
835 linear_extrude(height=catch_head_th, convexity=10)
837 linear_extrude(height=catch_tip_th, convexity=10)
838 CatchTipProfile(catch_tip_th - catch_head_th);
841 linear_extrude(height=catch_head_th, convexity=10)
844 translate(concat(cppB,[0])) hull(){
845 translate([0,0, catch_knob_height + catch_head_th - catch_knob_dia/2])
846 sphere(r = catch_knob_dia/2);
847 cylinder(r = catch_knob_dia/2, h = 0.1);
851 module CatchPreDistort(){ /////toplevel
852 scale(100 / sm_inner_rad)
857 module CatchAssembly(){ /////toplevel
858 rotate([0,0, -(cppe[0] + cppB[0] + catch_pin_slop) / sm_inner_rad * 360/TAU])
859 translate([0,0, catch_assembly_dy])
860 scale(sm_inner_rad / 100)
861 import(str("poster-tube-lid,CatchPostDistort-fa",
866 SomeStrap(catch_strap_width){
869 translate([-200, -200, -200])
870 cube([400, 200, 400]);
875 module CatchDemo(){ /////toplevel
876 color("blue") translate([0,0,
880 translate([0,0,+side_height
885 module CatchDemoS(){ /////toplevel
886 color("blue") translate([0,0,
891 translate([0,0,+side_height
894 mirror([0,1,0]) translate([-250,33,0]) cube([500,500,500]);
898 cube([6.15, 2,2], center=true);
901 module CatchPinProfileDemo(){ /////toplevel
902 translate([0, 0 * -bayo_behind,0]) {
904 bayo_n[0] - bayo_e[0]);
905 color("blue") translate([0,0,
908 CatchAssemblyCoreProfile();
915 polygon(bayo_polygon, convexity=10);
917 // adhoc show a position
922 )) difference(){ circle(2.5); circle(2.0); }