1 files changed, 1 insertions, 1 deletions

diff --git a/x-carriage-adapter.scad b/x-carriage-adapter.scad
index af91d52..f3ebb09 100644
--- a/x-carriage-adapter.scad
+++ b/x-carriage-adapter.scad
@@ -82,25 +82,25 @@ module holder() {
   // hinge
   translate([0,-hff,thread_h/2])
   rotate([0,90,0]) cylinder(d=3+slide_tolerance,h=hs_size[0],center=true,$fn=12);
   // push screw
   hull() for(oy=[-1,1]) translate([0,-hff+ps_offset+oy,-1]) cylinder(d=3+play_tolerance,h=thread_h+2,$fn=30);
   // tune screw
   translate([0,-sff-ms_size[1]/2,-1]) cylinder(d=3,h=thread_h+2);
  }//difference
 }
 
 
 module base() {
- us = 2*ms_size[2];
+ us = ms_size[2]+screw_shell_d/2;
  translate([0,-hff,0]) difference() {
   union() {
    for(sx=[-1,1]) translate([sx*(hs_size[0]-hinge_s)/2,0,0]) hull() {
     translate([0,0,thread_h/2])
     rotate([0,90,0]) cylinder(d=thread_h,h=hinge_s,center=true,$fn=60);
     cube(size=[hinge_s,thread_h,thread_h],center=true);
     translate([-hinge_s/2,0,-1]) mirror([0,1,0]) cube(size=[hinge_s,thread_h/2+back_thickness,thread_h+1]);
    } // hull for
    hull() {
     translate([0,0,-us/2-slide_tolerance]) cube(size=[hs_size[0],thread_h+1,us],center=true);
     for(sx=[-1,1]) translate([sx*(hs_size[0]/2-ms_bump),thread_h/2,-us-slide_tolerance])
     cylinder(r=ms_bump,h=us+slide_tolerance,$fn=30);