X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=sewing-table.scad.m4;h=eacbc3d5484ebfddb9a3c95d8d9d36d1f6bdf015;hp=ca36333d913a93360e039f93e15811f79d08580a;hb=3583e096f798c5be22a237895e24f2f2dea5b401;hpb=72d898e4eb972630e530cd066cfcf4b1eec90137

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index ca36333..eacbc3d 100644
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -7,6 +7,8 @@ ply_th = 18;
 ply_hole_dia = 15;
 ply_edge_min = 10;
 
+ply_hole_dia_real = 12;
+
 tile_th = 3;
 post_dia = 8;
 
@@ -28,6 +30,26 @@ interlock_fine_lenslop = 1.0;
 
 demo_slop = 0.1;
 
+leg_height = 62;
+
+leg_hole_dia = 5 + 0.75;
+leg_big_dia = 37;
+leg_bot_dia = 15;
+leg_top_flat_z = 5;
+leg_top_thick = 10;
+
+leg_midspc_dia = 20;
+leg_bot_thick = 10;
+
+leg_fin_top_w = 5;
+leg_fin_bot_w = 5;
+leg_fin_bot_rad = 30;
+leg_fin_bot_flat_z = 5;
+
+leg_n_fins = 4;
+leg_n_tubules = 4;
+leg_tubule_dia = 4;
+
 // cutout
 
 machine_rear_to_front = 84 + 0.25 - 1.4;
@@ -80,6 +102,8 @@ teststrapslots_at = [ [ 110, 70 ], [ 110, -35 ],
 teststrap = [ 3, 5 ];
 teststrap_peg = [7.5, 3.5];
 
+ply_edge_hole_dist_real = 14;
+
 // calculated
 
 TEST = false;
@@ -104,13 +128,18 @@ thehd_tl = [ -thehd_tr[0], thehd_tr[1] ];
 thehd_bl = -thehd_tr;
 thehd_br = -thehd_tl;
 
-tablet_z_slop = 0.25;
+tablet_z_slop = 1.00;
 
 interlock_rad = interlock_dia/2;
 interlock_negative_rad = interlock_rad + 0.125;
 
 interlock_sq_adj = 0.2; // arbitrary
 
+leg_fin_top_rad = sqrt( pow(leg_big_dia/2,2) -
+			pow(leg_fin_top_w/2,2) );
+
+leg_tubule_pos_rad = leg_big_dia/2 * 0.6;
+
 m4_define(`POST_TCROSSSZ',
           `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
 
@@ -140,8 +169,16 @@ module Post(){
 }
 
 module PostHole(){
-  translate([0,0,-5])
-    cylinder(r= jig_posthole_rad, h=10);
+  if (JIG) {
+    translate([0,0,-5])
+      cylinder(r= post_dia/2 + jig_post_hole_slop, h=10);
+    translate([0,0, -jig_min_th])
+      cylinder(r= ply_hole_dia_real/2, h = 5);
+    for (rot=[0:90:270]) rotate(rot) {
+	translate([ ply_edge_hole_dist_real, 0, 0 ])
+	  cube([ jig_pencil_rad*2, jig_pencil_slotlen, 20 ], center=true);
+      }
+  }
 }
 
 module Posts(posts) {
@@ -180,12 +217,13 @@ module TileBase(botleft, topright){
       crossoff = tile_hard_edge_hole_dist + POST_TCROSSSZ/2;
       cidsz = [ thehd[0], size[1] - 2*crossoff ];
       cidszr = [ cidsz[0], min(cidsz[1], 50) ];
-      translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
-	Commitid_BestCount(cidszr);
+      if (TEST)
+	translate( concat(botleft + [0, crossoff] + (cidsz-cidszr)/2, [0]) )
+	  Commitid_BestCount(cidszr);
       difference(){
 	mirror([0,0,1]) {
 	  translate(concat(botleft + [test_edge,test_edge], [test_tile_th]))
-	    cube(concat(size - [test_edge,test_edge]*2, [tile_th]));
+	    cube(concat(size - [test_edge,test_edge]*2, [tile_th*2]));
 	  translate(concat(botleft_post, [-1]))
 	    cube(concat(topright_post-botleft_post, [tile_th+2]));
 	}
@@ -194,6 +232,17 @@ module TileBase(botleft, topright){
 	  MachineEnvelope();
 	  cube(shufflesz, center=true);
 	}
+	if (JIG) {
+	  translate([0,0,-20]) linear_extrude(height=20) {
+	    for (diag=[[ +1, botleft                   ],
+		       [ -1, [topright[0], botleft[1]] ]]) {
+	      translate(diag[1])
+		rotate(atan2(size[1], diag[0] * size[0]))
+		translate([0, -test_edge/2])
+		square([vectorlen2d(size), test_edge]);
+	    }
+	  }
+	}
       }
     }
   }
@@ -643,6 +692,42 @@ module MachineEnvelope(){
   }
 }
 
+module Leg(){ ////toplevel
+  difference(){
+    union(){
+      hull(){
+	mirror([0,0,1])
+	  cylinder(r= leg_big_dia/2, height=leg_top_flat_z, $fn=100);
+	translate([0,0, -leg_top_thick])
+	  cylinder(r= leg_bot_dia/2, height=1, $fn=100);
+      }
+      for (rot=[0: 360/leg_n_fins : 359]) rotate(rot) {
+	  hull(){
+	    mirror([0,0,1]) translate([0, -leg_fin_top_w/2, 0])
+	      cube([ leg_fin_top_rad - 0.1,
+		     leg_fin_top_w,
+		     1 ])
+	      ;
+	    translate([0, -leg_fin_bot_w/2, -leg_height])
+	      cube([ leg_fin_bot_rad,
+		     leg_fin_bot_w,
+		     leg_fin_bot_flat_z ]);
+	  }
+	}
+    }
+    mirror([0,0,1]) translate([0,0,-1])
+      cylinder(r= leg_hole_dia/2, h=leg_height+2, $fn=30);
+    mirror([0,0,1]) translate([0,0,leg_top_thick - 0.1])
+      cylinder(r= leg_midspc_dia/2,
+	       h=leg_height - leg_top_thick - leg_bot_thick,
+	       $fn=30);
+    for (rot=[45: 360/leg_n_tubules : 359]) rotate(rot) {
+	mirror([0,0,1]) translate([ leg_tubule_pos_rad, 0, -1])
+	  cylinder(r= leg_tubule_dia/2, h=leg_height+2, $fn=20);
+      }
+  }
+}
+
 function Rectangle_corners(c0, sz) =
   // returns the corners of a rectangle from c0 to c0+sz
   // if sz is positive, the corners are anticlockwise starting with c0
@@ -802,6 +887,7 @@ module Tile00(){ ////toplevel
   rcy = cty + frontcurve_avoid_y;
   posts = [ cnr_posts[0],
 	    cnr_posts[1],
+	    0.5 * (cnr_posts[0] + cnr_posts[1]),
 	    cnr_posts[2] + [ 0,                             -rcy ],
 	    cnr_posts[2] + [ -sz[0] + frontedge_len - cutout_l_end_x, -cty ],
 	    cnr_posts[3] + [ 0,                             -cty ]
@@ -1014,6 +1100,12 @@ module Demo(){ ////toplevel
   translate(demo_slop*[-3,1]) color("blue")   Tile10();
   translate(demo_slop*[-3,0]) color("red")    Tile00();
   %Machine();
+  // Can also do this, to print reference sheet:
+  //  load this into openscad
+  //  select Ctrl-4 view, view all, scale appropriately
+  //  import sewing-table,Demo-flat.png
+  //  pngtopnm <sewing-table,Demo-flat.png | ppmbrighten -s -50 -v +100 >t.pnm
+  //  lpr t.pnm
 }
   
 //TestPiece1();