From 08619909c02a8babcc1aaf5e3a27f6e8cdf3abe2 Mon Sep 17 00:00:00 2001
From: Simon Inns <simon.inns@gmail.com>
Date: Fri, 15 May 2020 16:43:50 +0200
Subject: [PATCH] Updated ball caster design to raise back of robot by 3mm

---
 scad/assemblies.scad  | 2 +-
 scad/caster_ball.scad | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/scad/assemblies.scad b/scad/assemblies.scad
index ad2f02c..9e83fa9 100644
--- a/scad/assemblies.scad
+++ b/scad/assemblies.scad
@@ -294,7 +294,7 @@ module sub_assembly_10(standalone)
     move([3,45 + 15 + 1,-45 - 5]) caster_ball_holder(false);
 
     // Ball holder
-    move([3,45 + 15 + 1,-45 - 2]) {
+    move([3,45 + 15 + 1,-45 - 5]) {
         caster_ball_base(false);
         caster_ball_top(false);
 
diff --git a/scad/caster_ball.scad b/scad/caster_ball.scad
index 1f98421..f074536 100644
--- a/scad/caster_ball.scad
+++ b/scad/caster_ball.scad
@@ -132,13 +132,13 @@ module render_caster_ball_base()
 {
     difference() { 
         union() {
-            move([0,0,-6.5]) cyl(h=2,d=30, chamfer=0.5); // Lip
+            move([0,0,-6.5 + 1.5]) cyl(h=2 + 3,d=30, chamfer=0.5); // Lip
             move([0,0,-10.5]) cyl(h=3,d1=16, d2=24, chamfer1=0.5, center=false); // Ball chamfer
         }
 
         // 2x 8mm holes around the circumference of the hub
         move([0,0,-6.5]) zrot_copies(rots=[210,330], r=33/2, subrot=false) {
-            zcyl(h=6, d=8);
+            zcyl(h=10, d=8);
         }
 
         move([0,0,-3.5]) render_ball_bearing(20.5);
@@ -167,7 +167,7 @@ module caster_ball_base(printMode)
 {
     $fn=60;
     if (printMode) {
-        rotate([0,180,0]) move([0,0,5.5]) render_caster_ball_base();
+        rotate([0,180,0]) move([0,0,5.5 - 3]) render_caster_ball_base();
     } else {
         color("lightgrey") render_caster_ball_base();
     }