// -*- C -*- include front_height = 80; front_width = 120; front_setback = 30; front_thick = 2.4; front_hex_stride = 12.5; front_hex_dia = 9.5; front_hex_y_fudge = -0.65; front_surround_lr =3; back_thick = 3; back_pillarw = 6; base_thick = 2.4; eclip_inner_rad = 2.5; eclip_gap_rad = 0.1; eclip_prong_th = 2.25; eclip_outer_strt = 0.5; eclip_inner_xstrt = 0.5; eclip_ult_angle = 44; eclip_base_epsilon = 0.5; eclip_each_len = 6; eclip_each_every = 29; test_alpha = 10; test_main_th = 1.5; test_eclips = 5; test_base_th = 2.5; test_len = eclip_each_len + eclip_each_every*(test_eclips-1); num_eclips = 5; // calculated include eclip_inner_strt = eclip_outer_strt + eclip_inner_xstrt; r0 = eclip_inner_rad; r1 = r0 + eclip_gap_rad; r2 = r1 + eclip_prong_th; r2e = r1 + eclip_base_epsilon; ppxl = -(r0 / sqrt(2)) + (eclip_inner_strt / sqrt(2)); rgap = eclip_gap_rad; eclip_base_offset = r1; eclip_wall_offset = -ppxl; eclip_ra_offset = r2 - 0.1; eclip_recept_height = r2; eclip_rhs_offset = ppxl + rgap + eclip_prong_th; // does not include main_th $fn=70; module EclipLPlanCore(alpha){ FArcSegment(0,0, r1,r2, 180-eclip_ult_angle, eclip_ult_angle-alpha +1); difference(){ hull(){ intersection(){ circle(r2); rotate(-alpha) mirror([1,1]) square([r2e, 50]); } rotate(-alpha) mirror([1,1]) square([r2e, r2]); } circle(r1); } } module EclipRPlan(alpha, main_th){ intersection(){ rotate(alpha) translate([ppxl + main_th + rgap, -r2*2]) square([eclip_prong_th, r2*(2 + 1/sqrt(2))]); translate([-r2, -r2e]) square([r2*3, eclip_base_epsilon + r2*4]); } } module EclipLPlan(alpha){ rotate(alpha) EclipLPlanCore(alpha); } module EclipPPlan(main_th){ intersection(){ hull(){ circle(r0); rotate(90-eclip_ult_angle) square([r0,r0]); } translate([-(r0+.1), -(r0+.1)]) square([(r0+.1) + main_th + ppxl, r2*2]); } translate([ppxl, 0]) square([main_th, r2]); } module TestBase(){ ////toplevel translate([0,0, eclip_base_offset]){ for (i=[1 : 2: test_eclips-2]) { translate([0, i*eclip_each_every]) rotate([90,0,0]) linear_extrude(height=eclip_each_len) EclipLPlan(test_alpha); } for (j=[0 : 2: test_eclips-1]) { translate([0, j*eclip_each_every]) rotate([90,0,0]) linear_extrude(height=eclip_each_len) EclipRPlan(test_alpha, test_main_th); } } translate([-r2, -eclip_each_len, -test_base_th]){ difference(){ cube([r2*2, test_len, test_base_th]); mirror([0,0,1]) Commitid_BestCount_M([r2*2, test_len]); } } } module TestProtr(){ ////toplevel difference(){ translate([0,0, test_main_th - eclip_wall_offset]) rotate([0,90,0]) linear_extrude(height=test_len) EclipPPlan(test_main_th); mirror([0,0,1]) Commitid_BestCount_M([test_len, r2]); } } module TestRAProtr(){ ////toplevel rotate([-90,0,0]) TestProtr(); mirror([1,0,0]) translate([-test_len, -r2, -(eclip_ra_offset + test_base_th)]) cube([test_len, r2*2, test_base_th]); } module TestPlanDemo(){ color("red") EclipLPlan(test_alpha); color("blue") rotate(test_alpha) EclipPPlan(test_main_th); color("green") EclipRPlan(test_alpha, test_main_th); } beta = asin(front_setback / front_height); uf = [-sin(beta), cos(beta)]; ur = [ -uf[1], uf[0]]; pp = [0, 0]; pq = pp + uf*front_height + ur*eclip_ra_offset; pr = [ pq[0] - eclip_base_offset - eclip_wall_offset, 0 ]; echo("uf ur P Q R", uf, ur, pp, pq, pr); module Sketch(){ polygon([pq, pp, pr]); } thicks = [ base_thick, front_thick, back_thick ]; module Joins(alpha, objnum, objnum_f, objnum_m) { pitch = (front_width - eclip_each_len) / (num_eclips-1); thm = thicks[objnum_m]; stride = (front_width - eclip_each_len) / (num_eclips-1); if (objnum==objnum_f) { for (i=[ 1 : 2 : num_eclips-1 ]) { translate([0, i*stride + eclip_each_len, 0]) { rotate([90,0,0]) linear_extrude(height=eclip_each_len) EclipLPlan(alpha); } } for (i=[ 0 : 2 : num_eclips-1 ]) { translate([0, i*stride + eclip_each_len, 0]) { rotate([90,0,0]) linear_extrude(height=eclip_each_len) EclipRPlan(alpha, thm); } } } if (objnum==objnum_m) mirror([0,1,0]) rotate([90,0,0]) linear_extrude(height=front_width) rotate(alpha) EclipPPlan(thm); } function r3(pc) = [ pc[0], 0, pc[1] ]; module ObjectJoins(objnum){ translate(r3(pp)) Joins(beta, objnum, 0,1); translate(r3(pr)) mirror([1,0,0]) Joins(0, objnum, 0,2); translate(r3(pq)) rotate([0,90,0]) mirror([1,0,0]) Joins(-beta, objnum, 2,1); } module Base(){ xmin = pr[0] - eclip_rhs_offset - thicks[2]; xmax = pp[0] + eclip_rhs_offset + thicks[1] + eclip_prong_th * (1/cos(beta) - 1) + eclip_base_offset * tan(beta); intersection(){ ObjectJoins(0); translate([xmin, -1, -50]) cube([xmax - xmin, front_width + 2, 300]); } translate([xmin, 0, -eclip_base_offset - thicks[0]]){ difference(){ cube([xmax - xmin, front_width, thicks[0]]); translate([xmax-xmin, front_width]/2) rotate([0,0,270]) Commitid_Full16_M(); } } } module FrontPattern(){ totalh = front_height - eclip_wall_offset + thicks[1]; ystride = front_hex_stride; xstride = front_hex_stride * cos(30) * 2; difference(){ square([front_width, totalh]); translate([ front_surround_lr, eclip_recept_height ]) square([ front_width - front_surround_lr*2, totalh - eclip_recept_height*2 ]); } difference(){ square([front_width, totalh]); for (xi=[ -5 : 5 ]) { translate([front_width/2 + xi * xstride, 0]) { for (yi=[ 0 : 10 ]) { //echo(yi); translate([0, yi * ystride + front_hex_dia*front_hex_y_fudge]) { for (dv=[ [0,0], [-xstride/2, -ystride/2] ]) translate(dv) circle(r= front_hex_dia/2, $fn=6); } } } } } } module Front(){ ObjectJoins(1); rotate([0, 90-beta, 0]) translate([0, 0, ppxl]) rotate([0,0,90]) { linear_extrude(height=thicks[1]) FrontPattern(); } } module Back(){ ObjectJoins(2); zmin = pr[1]; zmax = pq[1] + eclip_prong_th; height = zmax - zmin; translate([pr[0] + eclip_wall_offset - thicks[2], 0, 0]) rotate([0,90,0]) rotate([0,0,90]) { difference(){ cube([front_width, height, thicks[2]]); translate([back_pillarw, eclip_recept_height, -10]) cube([front_width - back_pillarw*2, height - eclip_recept_height*2 - eclip_prong_th, 20]); } } } module BackPrint(){ ////toplevel rotate([0,-90,0]) Back(); } module FrontPrint(){ ////toplevel rotate([0, 90+beta, 0]) Front(); } module BasePrint(){ ////toplevel Base(); } module Demo(){ ////toplevel color("red") Base(); color("blue") Front(); color("black") Back(); } //PlanDemo(); //TestBase(); //TestProtr(); //TestRAProtr(); //Sketch(); //Demo(); //BackPrint(); //FrontPrint(); //BasePrint();