// use 10 ish for development, 60 or so for printing
$fn = 60;
-standoff_radius = 14.732 / 2; // 0.580 / 2 inches from spec sheet
+/* measured with calipers */
+ball_diameter = 12.7 + 0.75; // extra bit added for printing imprecision
+ball_radius = ball_diameter / 2;
+
+wall_thickness = 1;
+holder_height = (25 / 32) * ball_diameter + wall_thickness;
+
+holder_radius = ball_radius + wall_thickness;
+holder_diameter = holder_radius * 2;
+
+standoff_radius = holder_radius; // 0.580 / 2 inches from spec sheet
standoff_height = 48; // eyeballed
// eyeballed caster flange height, (0.580/5) inches, times 2 to be stronger
deck_flange_height * 1.1, // 1.1 is bigger than 1
deck_flange_radius]);}}}}}
-module caster_standoff(){
- cylinder(h = standoff_height - caster_flange_height,
- r = standoff_radius);
- deck_flange();
- for(ii = [0:3]){
- rotate([0, 0, 45 + 90 * ii])
- deck_flange_reinforcement();}
- caster_deck_interlock_solid();}
-
module ball_holder(){
- /* measured with calipers */
- ball_diameter = 12.7 + 0.5;
- ball_radius = ball_diameter / 2;
-
- wall_thickness = 1.5;
- holder_height = ball_radius + wall_thickness * 2;
-
- holder_outer_radius = ball_radius + wall_thickness;
- holder_outer_diameter = holder_outer_radius * 2;
-
+ gap = wall_thickness * 4;
difference (){
- cylinder(r = holder_outer_radius, h = holder_height);
+ cylinder(r = holder_radius, h = holder_height);
translate([0, 0, ball_radius + wall_thickness]){
sphere(r = ball_radius);}
translate([0, 0, holder_height / 2 + wall_thickness]){
- cube([holder_outer_diameter + 0.1,
- wall_thickness * 2,
- holder_height],
+ cube([holder_diameter + 0.1, gap, holder_height],
center = true);}}}
-ball_holder();
+module caster_standoff(){
+ cylinder(h = standoff_height,
+ r = standoff_radius);
+ deck_flange();
+ for(ii = [0:3]){
+ rotate([0, 0, 45 + 90 * ii])
+ deck_flange_reinforcement();}
+ translate([0, 0, standoff_height]){
+ ball_holder();}}
+
//caster_standoff();
+ball_holder();