sewing-table: Leg: introduce leg_n_fins (nfc)

[reprap-play.git] / sewing-table.scad.m4

diff --git a/sewing-table.scad.m4 b/sewing-table.scad.m4
index 8ca8ff17bc26b4a2f7342092f0841d15798f7d4b..09bfc586825e33e0a33a89319cc12c455effbd2b 100644 (file)
--- a/sewing-table.scad.m4
+++ b/sewing-table.scad.m4
@@ -30,6 +30,20 @@ interlock_fine_lenslop = 1.0;
 
 demo_slop = 0.1;
 
+leg_height = 50;
+
+leg_hole_dia = 5 + 0.75;
+leg_big_dia = 37;
+leg_bot_dia = 15;
+leg_top_flat_z = 5;
+
+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;
+
 // cutout
 
 machine_rear_to_front = 84 + 0.25 - 1.4;
@@ -115,6 +129,9 @@ 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) );
+
 m4_define(`POST_TCROSSSZ',
           `2*( tile_hard_edge_hole_dist - test_edge + 1 )')
 
@@ -667,6 +684,34 @@ 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_height])
+         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);
+  }
+}
+
 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