From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 30 Dec 2016 15:40:31 +0000 (+0000)
Subject: sewing-table: before reorge RoundEdge
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=978e945278e1fe1504d31c9a228758e928d77b9c;p=reprap-play.git

sewing-table: before reorge RoundEdge
---

diff --git a/sewing-table.scad b/sewing-table.scad
new file mode 100644
index 0000000..2ddacd1
--- /dev/null
+++ b/sewing-table.scad
@@ -0,0 +1,86 @@
+// -*- C -*-
+
+ply_th = 18;
+ply_hole_dia = 15;
+ply_edge_min = 10;
+
+tile_th = 3;
+post_dia = 8;
+
+post_shorter = 1;
+
+screw_dia = 2.2;
+screw_big_dia = 3.6;
+screw_big_len = 4.0;
+
+round_edge_rad = 2.0;
+
+// calculated
+
+ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
+
+echo("HOLES IN PLY ctr dist from edge = "+str(ply_edge_hole_dist));
+
+hole_slop = (ply_hole_dia - post_dia)/2;
+tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
+thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
+
+module Post(){
+  mirror([0,0,1]) {
+    difference(){
+      cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
+      translate([0,0, tile_th]) {
+	cylinder(r= screw_big_dia/2, h= screw_big_len);
+	cylinder(r= screw_dia/2, h= ply_th);
+      }
+    }
+  }
+}
+
+module Posts(posts) {
+  for (p= posts) {
+    translate([p[0], p[1], 0])
+      Post();
+  }
+}
+
+module TileBase(botleft_post, topright_post){
+  botleft = botleft_post - thehd;
+  size = topright_post - botleft_post + thehd * 2;
+  mirror([0,0,1])
+    translate([botleft[0], botleft[1], 0])
+    cube([size[0], size[1], tile_th]);
+}
+
+module RoundEdge(left_post, right_post) {
+  length_vec = right_post - left_post;
+  ortho_vec = [ -length_vec[1], length_vec[0] ] / dist2d(length_vec);
+  multmatrix([ [ length_vec[0],  length_vec[1], 0, left_post[0], ],
+	       [ otho_vec[0],    ortho_vec[1],  0, left_post[1], ],
+	       [ 0,              0,             1,            0, ],
+	       [ 0,              0,             0,            1, ] ]) {
+    translate([0, -tile_hard_edge_hole_dist, -round_edge_rad]){
+      difference(){
+	rotate([0,90,0])
+	  cylinder(r= round_edge_rad, h= 1.0);
+	translate([-1, 0, -20])
+	  cube([3, 20, 20]);
+      }
+    }
+  }
+}
+
+module RoundLeftCorner(this_post, right_post) {
+}
+
+module TestPiece1(){
+  holes = [ [-100, 0],
+	    [   0, 0]
+	    ];
+  TileBase(holes[0], holes[1]);
+  Posts(holes);
+  RoundEdge(holes[0], holes[1]);
+  RoundLeftCorner(holes[0], holes[1]);
+}
+
+TestPiece1();