module deck_flange(){
difference(){
- cylinder(h = deck_flange_height, r = deck_flange_radius);
+ cylinder(h = deck_flange_height, r = deck_flange_radius, $fn = 50);
for(ii = [-1, 1]){
translate([deck_grid_width * ii, 0, -.1])
cylinder(h = deck_flange_height * 1.1,
module caster_flange(){
side_radius = caster_flange_width / 2 - standoff_radius;
hull(){
- cylinder(h = caster_flange_height, r = standoff_radius);
+ cylinder(h = caster_flange_height, r = standoff_radius, $fn = 100);
translate([standoff_radius, 0, 0])
- cylinder(h = caster_flange_height, r = side_radius);
+ cylinder(h = caster_flange_height, r = side_radius, $fn = 40);
translate([-standoff_radius, 0, 0])
- cylinder(h = caster_flange_height, r = side_radius);}}
+ cylinder(h = caster_flange_height, r = side_radius, $fn = 40);}}
module nut(size, height){
width = size/1.75;
module nuts(){
translate([standoff_radius, 0, nut_height/2])
- nut(nut_short_side, nut_height);
+ nut(nut_short_side, nut_height + .1);
translate([-standoff_radius, 0, nut_height/2])
- nut(nut_short_side, nut_height);}
+ nut(nut_short_side, nut_height + .1);}
module _2_screw (){
//measured with calipers
- screw_height = 8;
+ screw_length = 8;
thread_radius = 2.17 / 2 - 0.1; // subtract 0.1 to make squeeze fit
head_height = 1.8;
head_radius = 4.1 / 2;
- cylinder(r = thread_radius, h = screw_height, $fn = 20);
+ cylinder(r = thread_radius, h = screw_length, $fn = 20);
cylinder(r = head_radius, h = head_height, $fn = 20);}
-module caster_standoff(){
+module caster_standoff_deck_side(){
difference(){
- union(){
- cylinder(h = standoff_height, r = standoff_radius);
- translate([0, 0, standoff_height - caster_flange_height])
- caster_flange();}
+ cylinder(h = standoff_height - caster_flange_height,
+ r = standoff_radius,
+ $fn = 50);
translate([0, 0, standoff_height - caster_flange_screw_length * 1.1 + 0.1])
scale([1, 1, 1.1])
caster_flange_screws();
rotate([0, 0, 45 + 90 * ii])
deck_flange_reinforcement();}}
-module caster_standoff_top(){
- translate([0, 0, caster_flange_height - standoff_height]){
- difference(){
- caster_standoff();
- translate([-deck_flange_radius, -deck_flange_radius, -0.1])
- cube([deck_flange_radius * 2,
- deck_flange_radius * 2,
- standoff_height - caster_flange_height + 0.1]);}}}
+module caster_standoff_caster_side(){
+ difference(){
+ caster_flange();
+ translate([0, 0, caster_flange_height - 0.7]){
+ rotate([180, 0, 0]){
+ _2_screw();}}
+ // make hole to get to screw head
+ translate([0, 0, caster_flange_height - 0.8]){
+ cylinder(r = 4.1 / 2, h = 10, $fn = 20);}
+ translate([0, 0, -.1]){
+ caster_flange_screws();}}}
-caster_standoff_top();
+caster_standoff_deck_side();
+translate([caster_flange_width / 2 + deck_flange_radius + 1, 0, 0]){
+ caster_standoff_caster_side();}