// -*- C -*- opening_height = 7.84; opening_depth = 7.88; openingedge_dia = 2.00; opening_protrh = 2.00; pivot_x = 6; inside_len = 4; pivoting_gap = 0.1; outside_gap = 3; outside_len = 13; outend_height = 3; outside_len_bot = 23; outside_pushh = 4; outside_pushslope = 1.4; outside_push_inadj = 0.82; ourcirc_r = 0.5 / 2; ribble_dia = 2.2;; opening_protr_slop = 0.1; intooth_top_slop = 0.1; inside_h_xgap = 1; pivot_r = 2; pivot_slop = 0.25; strap_above = 0.1; strap_th = 2.5; strap_below = 3; strap_width = 5; width = 35; nstraps = 2; test_width = 5; // calculated inside_h = opening_height/2 - opening_protrh - inside_h_xgap/2; edge_or = openingedge_dia/2 + opening_protr_slop; Q0 = [ openingedge_dia/2, openingedge_dia/2 + opening_height/2 ]; p4p5d = [edge_or + ourcirc_r, 0]; P0 = [ pivot_x, pivoting_gap ]; P4 = Q0 - p4p5d; P3t = [ P4[0], Q0[1] - openingedge_dia/2 + opening_protrh - intooth_top_slop - ourcirc_r ]; P2 = P4 + [ -(inside_len - ourcirc_r*2), 0 ]; P1 = [ P2[0], P3t[1] - (inside_h + ourcirc_r*2) ]; P5 = Q0 + p4p5d; P8t = [ outside_len - ourcirc_r, P5[1] ]; P9t = P8t + [ 0, -(strap_above + strap_th + strap_below - ourcirc_r*2) ]; P9b = [ P9t[0], -P9t[1] + outside_gap ]; P8b = P9b + [ 0, outend_height ]; P89eadj = [ outside_len_bot - outside_len, 0 ]; P8eb = P8b + P89eadj; P9eb = P9b + P89eadj; P6t = P5 + [ 0, outside_pushh - ourcirc_r*2 ]; P7 = [ P6t[0] + (P6t[1] - P1[1]) / outside_pushslope, P1[1] ]; P3a = P3t + [ -outside_push_inadj, 0 ]; P6a = P6t + [ -outside_push_inadj, 0 ]; outside_push_inadj_slope = (P3t[1]-P4[1]) / (P6a[1]-P5[1]); ribble_rad = ribble_dia/2; kit_adj_shift = -opening_height - 2.0; module ExtrusionSect(){ cr = openingedge_dia/2; toph = opening_height/2 + opening_protrh; for (my=[0,1]) { mirror([0,my]) { translate(Q0) { hull(){ circle(r=cr, $fn=20); translate([-cr,10]) square([cr*2, 1]); } } } } translate([-opening_depth, -toph]) { difference(){ translate([-5,-5]) square([opening_depth+6, toph*2+10]); square([opening_depth+2, toph*2]); } } } module PsHull(ps) { hull(){ for (p = ps) { translate(p) circle(r = ourcirc_r, $fn=10); } } } module LeverSect(top, inadj=false){ P3 = inadj ? P3a : P3t; P6 = inadj ? P6a : P6t; P8 = top ? P8t : P8b; P9 = top ? P9t : P9b; difference(){ union(){ PsHull([P2,P3,P4]); PsHull([P0,P1,P2,P5,P8,P9]); } hull(){ for (dp = [ [0,0], (P6-P5), (P3-P4) ]) { translate(Q0 + 5*dp) circle(r=edge_or, $fn=20); } } } } module StrapSectTop(){ translate(P9t + ourcirc_r * [+1,-1]) { difference(){ circle(r = strap_below + strap_th, $fn=40); circle(r = strap_below, $fn=40); } } } module StrapSectBot(){ mirror([0,1]){ for (dx = [ -(strap_below + strap_th), 0 ]) { translate(P9b + [ ourcirc_r + dx, -10 ]) { square([strap_th, 20]); } } } } module Ribbles(xmax, xmin, y){ for (x = [ xmax + ourcirc_r - ribble_rad : -ribble_rad * 4 : xmin ]) { translate([x, y]) circle(r = ribble_rad, $fn=20); } } module LeverSectTop(){ difference(){ union(){ LeverSect(true, false); Ribbles(P8t[0], Q0[0] + edge_or + ribble_rad*2, P5[1] + ourcirc_r); } translate([pivot_x,0]) circle(r= pivot_r + pivot_slop, $fn=20); } } module LeverSectBot(inadj=false){ P6 = inadj ? P6a : P6t; mirror([0,1]) { LeverSect(false, inadj); PsHull([P5,P6,P7]); PsHull([P8b,P8eb,P9eb,P9b]); Ribbles(P8eb[0], P9b[0], P8eb[1]); translate([pivot_x,0]) circle(r=pivot_r, $fn=20); } } module Demo(){ translate([0,0,-5]) color("white") ExtrusionSect(); LeverSectTop(); translate([0,0,5]) LeverSectBot(); color("black") LeverSectBot(true); color("blue") translate([0,0,10]) StrapSectTop(); color("purple") translate([0,0,-10]) StrapSectBot(); } module SomeLever() { // SomeLever(){ LeverBot(inadj); LeverSectBot(); } difference(){ linear_extrude(height=width, convexity=100) children(0); for (i = [ 0 : nstraps - 1 ]) { translate([0,0, (i + 0.5) / nstraps * width - strap_width/2]) linear_extrude(height=strap_width, convexity=10) children(1); } } } module Test(){ linear_extrude(height=test_width, convexity=100) { translate([0,2,0]) LeverSectTop(); LeverSectBot(); translate([0,kit_adj_shift]) LeverSectBot(true); } } module LeverTop(){ ////toplevel SomeLever(){ LeverSectTop(); StrapSectTop(); } } module LeverBot(){ ////toplevel SomeLever(){ LeverSectBot(); StrapSectBot(); } } module LeverBotAdj(){ ////toplevel SomeLever(){ LeverSectBot(true); StrapSectBot(true); } } module Kit(){ ////toplevel translate([0,2,0]) LeverTop(); LeverBot(); } module KitAdj(){ ////toplevel translate([0,2,0]) LeverTop(); LeverBotAdj(); } //LeverSectBot(true); //Demo(); //LeverTop(); //Test(); //Kit(); //KitAdj();