chiark / gitweb /
belt-slot-cut-jig: holder ctie attach
authorIan Jackson <ijackson@chiark.greenend.org.uk>
Sun, 9 Jun 2013 16:35:16 +0000 (17:35 +0100)
committerIan Jackson <ijackson@chiark.greenend.org.uk>
Sun, 9 Jun 2013 16:35:16 +0000 (17:35 +0100)
belt-slot-cut-jig.scad

index 3e39d8d..a0d85f7 100644 (file)
@@ -2,8 +2,13 @@
 
 crewpunch_slop = 0.3;
 
-holder_min_wall = 1;
-holder_front_wall = 5;
+holder_min_wall = 2;
+
+holder_attach_xsz = 5;
+holder_ctie_width = 4.0 + 0.5;
+holder_ctie_thick = 2.0 + 0.5;
+holder_attach_walls = 3;
+holder_attach_roof = 2.5;
 
 // from careful measurement
 
@@ -15,17 +20,23 @@ crewpunch_shape =
    [ 14, [2.1, 6.8], [2.6, 13.0] ],
    [ 16, [2.4, 6.9], [2.7, 13.2] ]];
 
+crewpunch_shaft_max_y = 7.5;
+
 crewpunch_systematic_size_error = +0.36;
 
 crewpunch_min_y = 4.7 - crewpunch_systematic_size_error;
 
-// computed
-
 crewpunch_smallest_shape = crewpunch_shape[0];
 crewpunch_biggest_shape = crewpunch_shape[len(crewpunch_shape)-1];
 
+// computed
+
+attach_ysz = holder_attach_walls*2 + holder_ctie_width;
+holder_front_wall = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][1]
+  + attach_ysz;
+
 holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
-holder_xsz = crewpunch_biggest_shape[0][0] + crewpunch_biggest_shape[0][1] +
+holder_xsz = crewpunch_biggest_shape[2][0] + crewpunch_biggest_shape[2][1] +
   holder_min_wall*2;
 holder_ysz = crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1] +
   holder_min_wall + holder_front_wall;
@@ -53,7 +64,20 @@ module CrewPunch(){
 module PunchHolder(){
   difference(){
     cube([holder_xsz, holder_ysz, holder_block_zsz]);
-    
+    translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
+              crewpunch_biggest_shape[1][0] + holder_front_wall,
+              -crewpunch_smallest_shape[0]])
+      CrewPunch();
+  }
+  translate([0,0,holder_block_zsz]){
+    difference(){
+      translate([holder_xsz/2 - holder_attach_xsz/2, 0, -1])
+       cube([holder_attach_xsz,
+             attach_ysz,
+             holder_ctie_thick + holder_attach_roof + 1]);
+      translate([-30, holder_attach_walls, 0.1])
+       cube([60, holder_ctie_width, holder_ctie_thick]);
+    }
   }
 }