widened opening for the bearings

1 files changed, 2 insertions, 0 deletions

diff --git a/x-carriage.scad b/x-carriage.scad
index 6dc5b67..47ba499 100644
--- a/x-carriage.scad
+++ b/x-carriage.scad
@@ -43,32 +43,34 @@ module belt(pitch=belt_pitch,width=belt_width,thickness=belt_thickness,tooth=bel
   }
   translate([0,-1,0])
   cube(size=[l,width+2,thickness+tooth+1]);
  }
 }
 
 module xcarriage() {
  cw = bearings_l+2*bearings_m;	// carriage width
  % for(mz=[0,1]) mirror([0,0,mz]) translate([0,0,-belts_apart/2]) belt(l=cw+2);
  difference() {
   translate([-cw/2,-belt_width/2,-(rods_apart+bearings_d+bearings_m)/2])
   cube(size=[cw,bearings_d/2+bearings_s+belt_width/2,rods_apart+bearings_d+bearings_m]);
 
   for(sz=[-1,1]) translate([0,0,sz*rods_apart/2]) {
    rotate([0,90,0])
    cylinder(d=bearings_d,h=bearings_l,center=true,$fn=60);
+   translate([0,-bearings_d/2,0])
+   cube(size=[bearings_l,bearings_d,bearings_d],center=true);
    for(sx=[-1,1]) translate([sx*bearings_l/4,0,0])
    rotate([0,90,0]) cylinder(d=bearings_d-bearings_m,h=cw+2,center=true,$fn=60);
    translate([-cw/2-1,-belt_width,-(bearings_d-bearings_m)/2])
    cube(size=[cw+2,belt_width,bearings_d-bearings_m]);
     rotate([0,90,0]) difference() {
      cylinder(d=tiehole_od,h=tiehole_w,center=true,$fn=60);
      cylinder(d=tiehole_id,h=tiehole_w+2,center=true,$fn=60);
     }
   }
 
   difference() {
    gap=belts_apart/6;
    translate([0,-.5,-gap/2])
    cube(size=[cw+2,belt_width+2,belts_apart+2*belt_thickness+gap],center=true);
    for(mx=[0,1]) mirror([mx,0,0]) {
     ofc = mounting_holes_apart/2+screwhead_d/2+belt_thickness+belt_tooth+play_tolerance; // offset from center