From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 18 Oct 2017 23:04:48 +0000 (+0100)
Subject: poster-tube-lid: break out StrapMountProtrusion (nfc)
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=commitdiff_plain;h=84417632775576b267c97545106bc682e098b56c

poster-tube-lid: break out StrapMountProtrusion (nfc)
---

diff --git a/poster-tube-lid.scad b/poster-tube-lid.scad
index 53b1ab4..a354a4c 100644
--- a/poster-tube-lid.scad
+++ b/poster-tube-lid.scad
@@ -410,22 +410,26 @@ module StrapMountBolt(l_delta){ ///toplevel
   }
 }
 
+module StrapMountProtrusion(half_x, max_y){
+  translate(smc_pos){
+    linear_extrude(height=sm_main_width, convexity=10){
+      hull(){
+	for (m = [0,1]) mirror([m,0,0]) {
+	  translate([-(half_x - sm_closure_cnr), max_y - sm_closure_cnr])
+	    circle(r=sm_closure_cnr);
+	  translate([-half_x, -sm_inner_rad])
+	    square([1,1]);
+	}
+      }
+    }
+  }
+}
+
 module StrapMount(){ ////toplevel
   difference(){
     union(){
       cylinder(r=sm_outer_rad, h=sm_main_width);
-      translate(smc_pos){
-	linear_extrude(height=sm_main_width, convexity=10){
-	  hull(){
-	    for (m = [0,1]) mirror([m,0,0]) {
-	      translate([-smc_cnr_c_x, smc_max_y - sm_closure_cnr])
-		circle(r=sm_closure_cnr);
-	      translate([-smc_cnr_c_x-sm_closure_cnr, -sm_inner_rad])
-		square([1,1]);
-	    }
-	  }
-	}
-      }
+      StrapMountProtrusion(smc_cnr_c_x + sm_closure_cnr, smc_max_y);
     }
     translate([0,0,-1])
       cylinder(r=sm_inner_rad, h=sm_main_width+2);