12 hinge_pin = 1.8 + 0.75;
17 screw_head = 8.7 + 1.2;
18 screw_nut_across = 7.9 + 0.75;
19 screw_nut_th = 3.9 + 0.75;
21 knob_behind_across = 12.2 + 0.75;
41 bank_eps_bbox_x = [149, 598];
42 bank_eps_bbox_y = [274, 1452];
44 bank_y_sz = 102.25 + 0.50 + 3.2;
45 bank_x_sz = (26.0 + 0.5);
52 retainer_walls = [18, 30];
54 bank_profile_scale_bodge = 1.0;
56 bank_input_ctr = [ 12.5, 11.5 ]; // from nearest corner
57 bank_input_sz = [ 8.5, 10.5 ];
59 mounted_pos_y_offset = 20;
68 straps_y = [ -bank_y_sz * 0.25,
71 screw_head_behind = main_th;
74 bank_recess_dx = minor_wall_min;
76 pspt_to_mm = 25.4 / 72;
78 main_r = tube_dia/2 + main_th;
80 screw_max_y_lhs = -main_r -screw_nut_across/2;
81 screw_max_y_rhs = -main_r -knob_behind_across/2;
83 screw_y = min(screw_max_y_lhs,
86 bot_y = screw_y -max( screw_nut_across, knob_behind_across/2 )
89 holder_x_sz = bank_x_sz + bank_recess_dx*2;
90 bank_bot_y = strap_above + strap_th;
93 brace_total_len = brace_len + main_th;
94 brace_ctrs_y = [ straps_y[0] - (brace_r + strap_w/2),
95 straps_y[1] + (brace_r + strap_w/2) ];
97 clamp_width_actual = max(clamp_min_width, holder_x_sz);
99 hinge_lobes = floor(clamp_width_actual / hinge_lobe_per);
100 hinge_stride = (clamp_width_actual + hinge_gap_z) / hinge_lobes;
102 hinge_outer_r = hinge_around + hinge_pin/2;
103 hinge_y = tube_dia/2 + hinge_outer_r;
107 module TubePlan(){ circle(r = tube_dia/2); }
108 module HingePinPlan(){ translate([0, hinge_y]) circle(r= hinge_pin/2); }
109 module HingeBodyPlan(){ translate([0, hinge_y]) circle(r= hinge_outer_r); }
111 module TubeClampLeftPlan(){
114 polygon([[ 0, hinge_y + hinge_outer_r ],
115 [ -(main_r + overlap_l), hinge_y + hinge_outer_r ],
116 [ -(main_r + overlap_l), bot_y ],
117 [ -clamp_gap/2, bot_y ],
118 [ -clamp_gap/2, 0, ],
128 module TubeClampLeft() { ////toplevel
129 linextr(-clamp_width_actual/2, clamp_width_actual/2)
133 module TubeClampRightPlan(){
136 rectfromto([ clamp_gap/2, bot_y ],
137 [ clamp_gap/2 + behind_knob_th, 0 ]);
143 rectfromto([ clamp_gap/2, main_r*5 ],
155 linextr_x_yz(-main_r*5, main_r*5)
156 translate([screw_y, 0])
159 translate([0, screw_y, 0]) {
160 linextr_x_yz(-(clamp_gap/2 + screw_nut_th), 0)
161 square([screw_nut_across,
162 screw_nut_across / cos(30) + bridge_slop*2],
166 -(clamp_gap/2 + screw_nut_th + screw_head_behind))
167 square([screw_head, screw_head + bridge_slop*2],
172 module SomeClamp(hinge_alt=false){
174 linextr(-clamp_width_actual/2, clamp_width_actual/2)
179 for (i=[0 : hinge_lobes-1]) {
182 -clamp_width_actual/2 + i * hinge_stride
183 + (hinge_alt ? hinge_stride/2 : 0)
185 linextr(-hinge_gap_z, hinge_stride/2)
186 square(hinge_outer_r*2 + hinge_gap_xy, center=true);
191 module PowerBankItselfSidePlan(){
192 translate([0, bank_bot_y]){
194 circle($fn=8, r=liner_th);
195 scale( bank_profile_scale_bodge *
200 translate(pspt_to_mm *
201 [-0.5 * (bank_eps_bbox_x[0] +
203 -bank_eps_bbox_y[0]])
204 import("powerbank-anker-10000.dxf", convexity=5);
209 module PowerBankItself(){ ////toplevel
211 linextr_y_xz(-bank_y_sz/2,
213 PowerBankItselfSidePlan();
216 module PowerBankSidePlan(){ ////toplevel
217 render() difference(){
218 rectfromto([ -holder_x_sz/2, 0 ],
219 [ +holder_x_sz/2, bank_recess_y + bank_bot_y ]);
221 PowerBankItselfSidePlan();
225 module PowerBankStrapCut(){ ////toplevel
227 rectfromto([ -holder_x_sz, -0.05 ],
228 [ +holder_x_sz, strap_th + strap_r ]);
231 translate([sx * (holder_x_sz/2 - strap_r + 0.1),
239 module PowerBankHolderTest(){ ////toplevel
241 linextr(-1,5) PowerBankSidePlan();
242 linextr(0, strap_w) PowerBankStrapCut();
246 module EndRetainer(depth){ ////toplevel
247 translate([0, -bank_y_sz/2, 0]) {
248 linextr_y_xz(-endwall_th, 0)
249 rectfromto([ 0, -holder_x_sz/2 ],
250 [ -depth, +holder_x_sz/2 ]);
254 linextr(-holder_x_sz/2, -bank_x_sz/2){
256 rectfromto([ 0, -endwall_th ],
267 module BraceTubePlan(){
270 rectfromto(brace_r * [-2, 0],
275 module PowerBankHolder(){ ////toplevel
279 linextr_y_xz(-(bank_y_sz/2 + 0.1),
280 +(bank_y_sz/2 + 0.1))
283 EndRetainer(retainer_walls[0]);
284 mirror([0,1,0]) EndRetainer(retainer_walls[1]);
286 translate([0,0, bank_x_sz/2]){
287 for (y = brace_ctrs_y) {
289 linextr_x_yz(0, brace_total_len)
293 translate([brace_total_len, 0,0])
294 linextr_y_xz(brace_ctrs_y[0] - brace_r,
295 brace_ctrs_y[1] + brace_r)
300 for (strap_y = straps_y)
301 translate([0, strap_y, 0])
308 translate([ bank_bot_y, -bank_y_sz/2, -bank_x_sz/2 ])
311 translate(bank_input_ctr)
312 square(center=true, bank_input_sz);
316 module TubeClampLeft() { ////toplevel
317 // We want this to print with the recess overhand to the right
318 // where the workpiece cooling fan is
329 module PlacePowerBank(){
330 translate([main_r, -mounted_pos_y_offset, 0])
334 module Main(){ ////toplevel
344 module TubeClampRight() { ////toplevel
348 TubeClampRightPlan();
351 module TubeClampDemo() { ////toplevel
357 module Demo() { ////toplevel