challenge-bot.com Git - ozzloy@gmail.com/3d-printables/blob - place-value-manipulative.scad

   1 /*
   2   GNU AGPLv3 (or later at your option)
   3   see bottom for more license info.
   4   please do not remove this notice.
   5 */
   6
   7 ones_place();
   8 //tens_place();
   9 //hundreds_place();
  10 //thousands_place();
  11
  12 // use this while editing so previewing is faster:
  13 //$fn = 30;
  14 // use this for generating STL so model is more accurate:
  15 $fn = 100;
  16
  17 // how big each ones place side is in millimeters
  18 side_length = 10;
  19
  20 // modify this to your aesthetic taste
  21 corner_radius = side_length / 6;
  22
  23 connector_thickness = side_length / 4;
  24
  25 fudge = 0.1;
  26
  27 module fillet(r) {
  28    offset(-r) { offset(r) { children(); } } }
  29
  30 module round_inside_corners(r) {
  31   fillet(r) children(); }
  32
  33 module round_outside_corners(r) {
  34   fillet(-r) children(); }
  35
  36 module connector_tab(connector_thickness) {
  37   rotate([0, -90, -90]) {
  38     translate([corner_radius / 2, 0, 0]) {
  39       linear_extrude(height = connector_thickness) {
  40         intersection() {
  41           circle(corner_radius, $fn = 3);
  42           translate([-corner_radius, -corner_radius]) {
  43             square([corner_radius, 2 * corner_radius]); } }
  44         round_outside_corners(corner_radius / 3) {
  45           circle(corner_radius, $fn = 3); } } } } }
  46
  47 module ones_place() {
  48   difference() {
  49     linear_extrude(height = side_length) {
  50       round_outside_corners(corner_radius) {
  51         square(side_length); } }
  52     translate([side_length / 2, -fudge, -fudge]) {
  53       connector_tab(connector_thickness); }
  54     translate([side_length / 2,
  55                side_length - connector_thickness + fudge,
  56                -fudge]) {
  57       connector_tab(connector_thickness); } }
  58   translate([side_length / 2,
  59              0,
  60              side_length - 2 * fudge]) {
  61     connector_tab(connector_thickness - 2 * fudge); }
  62   translate([side_length / 2,
  63              side_length - connector_thickness + 2 * fudge,
  64              side_length - 2 * fudge]) {
  65     connector_tab(connector_thickness - 2 * fudge); } }
  66
  67 module tens_place() {
  68   for(ones_index = [0 : (10 - 1)]) {
  69     translate([ones_index * side_length, 0, 0]) {
  70       ones_place(); } } }
  71
  72 module hundreds_place() {
  73   for(tens_index = [0 : (10 - 1)]) {
  74     translate([0, tens_index * side_length, 0]) {
  75       tens_place(); } } }
  76
  77 module thousands_place() {
  78   for(hundreds_index = [0 : (10 - 1)]) {
  79         translate([0, 0, hundreds_index * side_length]) {
  80           hundreds_place(); } } }
  81
  82 //connector_tab(connector_thickness);