// https://gitorious.org/ozzloy/challenge-bot
// https://github.com/waynegramlich/challenge-bot
+use <oshw.scad>
+
// use 10 ish for development, 60 or so for printing
$fn = 60;
ball_diameter = 12.7 + 0.80; // extra bit added for printing imprecision
ball_radius = ball_diameter / 2;
+standoff_height = 60; // kyle eyeballed
+
wall_thickness = 1;
holder_floor = 3;
-holder_arms_length = 10;
-holder_height = holder_floor + holder_arms_length + (3 / 4) * ball_diameter;
+holder_arms_length = 20;
+holder_height =
+ holder_floor + holder_arms_length + (11 / 16) * ball_diameter;
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 - holder_height; // eyeballed
+standoff_lower_portion_height = standoff_height - holder_height;
// eyeballed caster flange height, (0.580/5) inches, times 2 to be stronger
caster_flange_height = 5;
module deck_flange(){
difference(){
- cylinder(h = deck_flange_height, r = deck_flange_radius);
+ scale([0.265, 0.265, 1]){
+ linear_extrude(height = deck_flange_height){
+ oshw();}}
for(ii = [-1, 1]){
translate([deck_grid_width / 2 * ii, 0, -.1])
cylinder(h = deck_flange_height * 1.1,
- r = deck_flange_screw_radius);
- translate([0, deck_grid_width / 2 * ii, -.1])
- cylinder(h = deck_flange_height * 1.1,
- r = deck_flange_screw_radius);}}}
+ r = deck_flange_screw_radius);}
+ translate([0, deck_grid_width / 2, -.1])
+ cylinder(h = deck_flange_height * 1.1,
+ r = deck_flange_screw_radius);}}
module deck_flange_reinforcement(){
translate([-deck_flange_radius,
center = true);}}}
module caster_standoff(){
- cylinder(h = standoff_height,
+ cylinder(h = standoff_lower_portion_height,
r = standoff_radius);
deck_flange();
for(ii = [0:3]){
rotate([0, 0, 45 + 90 * ii])
deck_flange_reinforcement();}
- translate([0, 0, standoff_height]){
+ translate([0, 0, standoff_lower_portion_height]){
ball_holder();}}
-//caster_standoff();
-ball_holder();
+caster_standoff();