From 4fbbce6f2e884d2d10790c315539b4cc84c20bd5 Mon Sep 17 00:00:00 2001
From: Michael Krelin <hacker@klever.net>
Date: Fri, 15 Jul 2016 19:31:16 +0000
Subject: widened belt opening

---
diff --git a/x-carriage.scad b/x-carriage.scad
index 8a9f0d9..c2552d2 100644
--- a/x-carriage.scad
+++ b/x-carriage.scad
@@ -21,6 +21,7 @@ belts_thickness = belt_thickness*2+belt_tooth+0.5;
 belt_width = 6 + slide_tolerance;
 belts_apart = 12;
 belt_pitch = 2;
+beltholder_chamfer = 1;
 
 tiehole_id = bearings_d+3;
 tiehole_od = bearings_d+10;
@@ -93,6 +94,10 @@ module xcarriage() {
    translate([0,belt_width/2+screwhead_h+play_tolerance,0])
    rotate([90,0,0]) cylinder(d=screwhead_d+2*play_tolerance,h=screwhead_h+play_tolerance+1,$fn=30);
   }
+  ccs = (belt_thickness+2*beltholder_chamfer)/sqrt(2);
+  translate([0,-belt_width/2,belts_apart/2+belt_thickness/2-fit_tolerance/2])
+  rotate([45,0,0]) cube(size=[cw+2,ccs,ccs],center=true);
+
  } // difference
 }
 
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