X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=ksafe-base.scad;h=87a603180b52e77ffbfd06e307eb8839637f1e85;hb=ffb2e0ea910eb84b2948dccf8f137be58d3d3846;hp=2ef442b0c7c789d36b851555ead35e437c5073b8;hpb=3581deec0a4c569e052190dcbadc95297b0130fe;p=reprap-play.git

diff --git a/ksafe-base.scad b/ksafe-base.scad
index 2ef442b..87a6031 100644
--- a/ksafe-base.scad
+++ b/ksafe-base.scad
@@ -1,13 +1,13 @@
 // -*- C -*-
 
-// xxx from actual ksafe
-bolt_above = 4;
-wall_thick = 4;
-bolthole_height = 4;
-bolthole_width = 10;
-main_sz = 300;
-cnr_rad = 10;
-lidinner_thick_allow = 20;
+// from actual ksafe
+bolt_above = 8.50 - 0.50;
+bolthole_height = 4.24 + 1.00;
+wall_thick = 4.50;
+bolthole_width = 16.62 + 2.00;
+main_sz = 150.56 + 0.75;
+cnr_rad = 13.5; // approx
+lidinner_thick_allow = 20.78 + 0.50;
 
 // other parameters
 web_thick = 4;
@@ -15,12 +15,12 @@ web_height = 20; // excluding wall and base thick
 bolthole_rhs = 20;
 bolthole_lhs = 20;
 boltreinf_thick = 6;
-anchor_wall_space = 45;
+anchor_wall_space = 25;
 base_thick = 4;
 space = 25;
 anchor_thick = 4;
 anchor_rad = 4;
-bevel = 5;
+bevel = 8;
 
 // ----- calculated -----
 
@@ -31,6 +31,18 @@ gppB = gppA - [ wall_thick, 0 ];
 
 gppL = [ gppB[0], -(lidinner_thick_allow + space + base_thick) ];
 
+yw1 = -web_thick/2;
+yw2 = yw1 - bolthole_rhs;
+yw3 = yw2 - anchor_thick;
+yw4 = yw3 - anchor_wall_space;
+yw5 = yw4 - wall_thick;
+yw6 = -(hsz - cnr_rad + 0.1);
+
+yw10 = web_thick/2;
+yw11 = yw2 + anchor_wall_space;
+yw12 = yw11 + wall_thick;
+yw13 = -yw6;
+
 // anchor
 
 anchor_b = anchor_thick + anchor_rad;
@@ -139,20 +151,84 @@ module WebProfile(){
   }
 }
 
-module KsafeBase(){
-  for (xm=[0,1]) for (ym=[0,1]) {
-    mirror([xm,0]) mirror([0,ym])
+module SomeBaseProfile(I, F){
+  polygon([ I,
+	    F,
+	    [ hsz+1, F[1] ],
+	    [ hsz+1, I[1] ] ]);
+}
+
+module BaseProfile(){
+  SomeBaseProfile($xppI, $xppF);
+}
+
+module SWalls(ymin, ymax, t_bevel) {
+  upp_app_Vars(t_bevel) {
+    translate([0,ymin,0])
+      mirror([0,1,0])
+      rotate([90,0,0])
+      linear_extrude(height= ymax-ymin, convexity=10)
+      for (xm=[0,1])
+	mirror([xm,0])
+	  translate([-hsz, 0])
+	    children();
+  }
+}
+
+module AtTwoCorners(){
+  for (xm=[0,1]) {
+    mirror([xm,0,0]) 
     translate((hsz - cnr_rad) * [1,1])
     intersection(){
       rotate_extrude(convexity=10)
 	translate([-cnr_rad,0])
-	UsualProfile();
+	children();
       translate([0,0,-250])
 	cube([50,50,500]);
     }
   }
 }
 
+module Box(){
+  /// corners, and front and back of base
+  for (ym=[0,1]) mirror([0,ym,0]) {
+    AtTwoCorners(){
+      UsualProfile();
+    }
+    hull() AtTwoCorners(){
+      upp_app_Vars(bevel){
+	polygon([ $xppI,
+		  $xppF,
+		  $xppF + [0.1, 0],
+		  $xppI + [0.1, 0]
+		  ]);
+      }
+    }
+  }
+
+  // side walls and base
+  SWalls(yw6 , yw4 , bevel  ) { UsualProfile();      BaseProfile(); }
+  SWalls(yw5 , yw4 , a_bevel) { AnchorWallProfile(); BaseProfile(); }
+  SWalls(yw5 , yw12, a_bevel) { NearAnchorProfile(); BaseProfile(); }
+  SWalls(yw3 , yw2 , a_bevel) { AnchorProfile();     BaseProfile(); }
+  SWalls(yw11, yw12, a_bevel) { AnchorWallProfile(); BaseProfile(); }
+  SWalls(yw11, yw13, bevel  ) { UsualProfile();      BaseProfile(); }
+  SWalls(yw1,  yw10, a_bevel) { WebProfile(); SomeBaseProfile($gppS, $xppF); }
+
+  // front and rear walls
+  rotate([0,0,90]) SWalls(yw6, yw13, bevel) UsualProfile();
+}
+
+module KsafeBase(){
+  difference(){
+    Box();
+
+    // bolt holes
+    translate([0,0, -bolt_above -0.5 * bolthole_height])
+      cube(center=true, [ main_sz + 20, bolthole_width, bolthole_height ]);
+  }
+}
+
 module DemoProfiles(){
   translate([0,0,-2]) color("yellow") AnchorWallProfile();
   color("red") AnchorProfile();
@@ -162,4 +238,5 @@ module DemoProfiles(){
 }
 
 //DemoProfiles();
+//Box();
 KsafeBase();