chiark / gitweb /
belt-slot-cut-jig: onejig in progress
authorIan Jackson <ijackson@chiark.greenend.org.uk>
Sun, 9 Jun 2013 17:25:57 +0000 (18:25 +0100)
committerIan Jackson <ijackson@chiark.greenend.org.uk>
Sun, 9 Jun 2013 17:25:57 +0000 (18:25 +0100)
belt-slot-cut-jig.scad

index aa0f632..4ff14f1 100644 (file)
@@ -10,6 +10,12 @@ holder_ctie_thick = 2.0 + 0.5;
 holder_attach_walls = 3;
 holder_attach_roof = 2.5;
 
+jig_interval = 25;
+strap_width = 25;
+edgewall_width = 3;
+
+main_slop = 0.5;
+
 // from careful measurement
 
 crewpunch_shape =
@@ -38,8 +44,11 @@ holder_front_wall = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][1]
 holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
 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;
+crewpunch_biggest_y =
+  crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
+holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_wall;
+
+attach_offset = holder_attach_xsz + holder_min_wall;
 
 // objects
 
@@ -61,25 +70,47 @@ module CrewPunch(){
   }
 }
 
-module PunchHolder(){
-  offset = holder_attach_xsz + holder_min_wall;
-  difference(){
-    translate([0,offset,0])
-      cube([holder_xsz, holder_ysz - offset, 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();
+module PunchHolder(cutouts=true){
+  translate([-holder_xsz/2,
+            -holder_ysz + holder_min_wall + crewpunch_biggest_y/2,
+            0]){
+    difference(){
+      translate([0,attach_offset,0])
+       cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
+      if (cutouts)
+       translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
+                  crewpunch_biggest_shape[1][0] + holder_front_wall,
+                  -crewpunch_smallest_shape[0]])
+         CrewPunch();
+    }
+    difference(){
+      translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
+       cube([holder_attach_xsz,
+             attach_ysz,
+             holder_block_zsz + holder_ctie_thick + holder_attach_roof + 1]);
+      if (cutouts)
+       translate([-30, holder_attach_walls, holder_block_zsz + 0.1])
+         cube([60, holder_ctie_width, holder_ctie_thick]);
+    }
   }
+}
+
+module OneJig(){
   difference(){
-    translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
-      cube([holder_attach_xsz,
-           attach_ysz,
-           holder_block_zsz + holder_ctie_thick + holder_attach_roof + 1]);
-    translate([-30, holder_attach_walls, holder_block_zsz + 0.1])
-      cube([60, holder_ctie_width, holder_ctie_thick]);
+    translate([-(jig_interval/2 + 1),
+              -(strap_width/2 + edgewall_width) - attach_offset,
+              0])
+      cube([jig_interval + 2,
+           strap_width + edgewall_width*2 + attach_offset,
+           holder_ysz]);
+    minkowski(){
+      cube([main_slop*2, main_slop*2, 50], center=true);
+      PunchHolder(false);
+    }
   }
 }
        
 //CrewPunch();
-PunchHolder();
+//PunchHolder();
+//PunchHolder(false);
+OneJig();