X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=belt-slot-cut-jig.scad;h=4ff14f1f66864431d1b166fec38884482d289e50;hb=5170ad7427d895b23ab21dec9135f29492b9e858;hp=6c8d1536d65d98a9a5754f0314aca844fcf5d963;hpb=b213f2884a056b79199fd6fae2e8b4611ceeefac;p=reprap-play.git

diff --git a/belt-slot-cut-jig.scad b/belt-slot-cut-jig.scad
index 6c8d153..4ff14f1 100644
--- a/belt-slot-cut-jig.scad
+++ b/belt-slot-cut-jig.scad
@@ -2,6 +2,20 @@
 
 crewpunch_slop = 0.3;
 
+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;
+
+jig_interval = 25;
+strap_width = 25;
+edgewall_width = 3;
+
+main_slop = 0.5;
+
 // from careful measurement
 
 crewpunch_shape =
@@ -12,10 +26,30 @@ 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;
 
+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[2][0] + crewpunch_biggest_shape[2][1] +
+  holder_min_wall*2;
+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
 
 module CrewPunch(){
@@ -36,4 +70,47 @@ module CrewPunch(){
   }
 }
 
-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([-(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(false);
+OneJig();