From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 21 May 2017 23:38:41 +0000 (+0100)
Subject: sewing-table: MachineRear seems plausible
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=bdcf86014a079763ab42460aa6db06eec4b867e2;p=reprap-play.git

sewing-table: MachineRear seems plausible
---

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 2bd91b1..0a8fb4a 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -46,6 +46,16 @@ cutout_tile01_y = 170 - 147 + cutout_l_end_y_front_slop;
 cutout_tile11_x = cutout_l_end_x + cutout_l_end_curve;
 cutout_tile11_y = cutout_l_end_y_total - cutout_tile01_y;
 
+// rear curve
+
+rearedge_len = 170;
+
+rearcurve_rad = 25.4;
+rearcurve_strt_len = 65;
+rearcurve_total_len = 84;
+
+rearcurve_rad_slop = 0.5;
+
 // calculated
 
 TEST = false;
@@ -335,8 +345,41 @@ module Machine_Arm(){
   }
 }
 
-module Machine(){
+module Machine_Rear(){
+  big_rad = rearcurve_total_len - rearcurve_strt_len + rearcurve_rad;
+  small_rad = rearcurve_rad + rearcurve_rad_slop;
+  translate([ 250 + rearedge_len - cutout_l_end_y + big_rad,
+	      cutout_tile11_y,
+	      0 ]){
+    translate([ 0,
+		0,
+		-rearcurve_rad
+		]){
+      rotate([0,-90,0]){
+	cylinder(r = small_rad, h= rearcurve_strt_len);
+      }
+    }
+    translate([ 0,
+		0,
+		big_rad - rearcurve_rad ]) {
+      intersection(){
+	rotate([90,0,0]){
+	  rotate_extrude(convexity=10) {
+	    translate([ big_rad,
+			0 ])
+	      circle(r= small_rad);
+	  }
+	}
+	mirror([0,0,1])
+	  cube([100,100,100]);
+      }
+    }
+  }
+}
+
+module Machine(){ ////toplevel
   Machine_Arm();
+  Machine_Rear();
 }
   
 function Rectangle_corners(c0, sz) =