1 files changed, 1 insertions, 1 deletions

diff --git a/x-carriage.scad b/x-carriage.scad
index 26e54f6..ac963d5 100644
--- a/x-carriage.scad
+++ b/x-carriage.scad
@@ -61,13 +61,13 @@ module xcarriage() {
      cylinder(d=tiehole_id,h=tiehole_w+2,center=true,$fn=60);
     }
    rotate([0,90,0]) cylinder(d=bearings_d-bearings_m,h=cw+2,center=true,$fn=60);
   }
 
   difference() {
-   gap=3;
+   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
     r=1;
     x0 = ofc+r; x1=cw/2-r;