// https://gitorious.org/ozzloy/challenge-bot
// https://github.com/waynegramlich/challenge-bot
+// use $fn = 20 while developing, 100 when about to print
+// 20 will make previews fast
+// 100 will make printing smooth
+$fn = 20;
+
wheel_depth = 6;
wheel_radius = 68/2;
motor_shaft_length = wheel_depth * 3 / 4;
intersection(){
- cylinder(h = motor_shaft_length,
- r = motor_shaft_big,
- center = true,
- $fn = 30);
+ cylinder(h = motor_shaft_length, r = motor_shaft_big, center = true);
// x direction is multiplied by 2 because the radius of the cylinder
// goes in both directions. the extra .1 is for overlap
cube([motor_shaft_big * 2.1, motor_shaft_small, motor_shaft_length],
center = true);}}
module mounting_screw(){
- cylinder(h = wheel_depth * 1.1, r = 1, $fn = 30, center = true);}
+ cylinder(h = wheel_depth * 1.1, r = 1, center = true);}
module wheel(){
translate([0, 0, wheel_depth / 2]){
difference(){
- cylinder(h = wheel_depth, r = wheel_radius, center = true, $fn = 30);
+ cylinder(h = wheel_depth, r = wheel_radius, center = true);
translate([0, 0, wheel_depth / 4]){
scale([1, 1, 1.1]){
encoder_shaft();}}
module between_spokes(){
minkowski(){
pie_slice();
- cylinder(h = wheel_depth / 2, r = 1, $fn = 30);}}
+ cylinder(h = wheel_depth / 2, r = 1);}}
wheel();