// -*- C -*-
-// xxx
+// xxx from actual ksafe
bolt_above = 4;
wall_thick = 4;
bolthole_height = 4;
bolthole_width = 10;
-base_thick = 5;
+main_sz = 300;
+cnr_rad = 10;
lidinner_thick_allow = 20;
+
+// other parameters
+web_thick = 4;
+web_height = 20; // excluding wall and base thick
+bolthole_rhs = 20;
+bolthole_lhs = 20;
+boltreinf_thick = 6;
+anchor_wall_space = 45;
+base_thick = 4;
space = 25;
anchor_thick = 4;
anchor_rad = 4;
-bevel = 15;
+bevel = 5;
// ----- calculated -----
+hsz = main_sz/2;
+
gppA = [0,0];
gppB = gppA - [ wall_thick, 0 ];
a_bevel = 2 * anchor_b * (1 + sqrt(0.5));
-module upp_app_Profile(t_bevel){
- xppE = gppL + t_bevel * [0,1];
- xppF = gppL + t_bevel * [1,0];
+module upp_app_Vars(t_bevel){
+ $xppE = gppL + t_bevel * [0,1];
+ $xppF = gppL + t_bevel * [1,0];
+
+ $xppJ = $xppE + wall_thick * [ 1, tan(22.5) ];
+ $xppI = $xppF + base_thick * [ tan(22.5), 1 ];
- xppJ = xppE + wall_thick * [ 1, tan(22.5) ];
- xppI = xppF + base_thick + [ tan(22.5), 1 ];
+ // must pass a_bevel for t_bevel for these to be valid
+ $gppP = gppA + [0,-1] * lidinner_thick_allow;
+ $gppQ = $gppP + [1,-1] * web_height;
+ $gppR = $xppJ + [ 1, tan(22.5) ] * web_height;
+ $gppS = $xppI + [ tan(22.5), 1 ] * web_height;
+ $gppT = [ $gppQ[0], $xppE[1] ];
+
+ children();
+}
+module upp_app_Profile(){
polygon([ gppA,
gppB,
- xppE,
- xppF,
- xppF + [1,0],
- xppI + [1,0],
- xppJ ]);
+ $xppE,
+ $xppF,
+ $xppF + [1,0],
+ $xppI + [1,0],
+ $xppJ ],
+ convexity=10);
}
module UsualProfile(){
- upp_app_Profile(bevel);
+ upp_app_Vars(bevel) upp_app_Profile();
}
module NearAnchorProfile(){
- upp_app_Profile(a_bevel);
+ upp_app_Vars(a_bevel) upp_app_Profile();
}
module AnchorProfile(){
- xppE = gppL + t_bevel * [0,1];
- xppF = gppL + t_bevel * [1,0];
-
- upp_app_Profile(a_bevel);
-
- difference(){
- hull(){
- polygon([ xppE,
- xppF,
- xppF + [0,1],
- xppE + [1,0] ]);
- translate(appM) circle(r= anchor_b);
+ upp_app_Vars(a_bevel) {
+
+ upp_app_Profile();
+
+ difference(){
+ hull(){
+ polygon([ $xppE,
+ $xppF,
+ $xppF + [0,1],
+ $xppE + [1,0] ],
+ convexity=10);
+ translate(appM) circle(r= anchor_b);
+ }
+ translate(appM) circle(r= anchor_rad);
+ }
+ }
+}
+
+module AnchorWallProfile(){
+ UsualProfile();
+ NearAnchorProfile();
+ hull(){
+ for (bev = [bevel, a_bevel]) {
+ upp_app_Vars(bev) {
+ polygon([ $xppE,
+ $xppF,
+ $xppI,
+ $xppJ ],
+ convexity=10);
+ }
+ }
+ }
+}
+
+module WebProfile(){
+ upp_app_Vars(a_bevel){
+ if ($gppR[1] <= $gppP[1]) {
+ polygon([ $gppP,
+ $xppE,
+ $gppT,
+ $gppQ ]);
+ polygon([ $gppP,
+ $xppE,
+ $xppF,
+ $gppS,
+ $gppR ],
+ convexity=10);
+ } else {
+ polygon([ $gppP,
+ $xppE,
+ $xppF,
+ $gppS,
+ $gppP + web_height * [1,0] ],
+ convexity=10);
+ }
+ polygon([ $gppS,
+ $xppF,
+ $xppF + [1,0],
+ $gppS + [1,0] ],
+ convexity=10);
+ }
+}
+
+module KsafeBase(){
+ for (xm=[0,1]) for (ym=[0,1]) {
+ mirror([xm,0]) mirror([0,ym])
+ translate((hsz - cnr_rad) * [1,1])
+ intersection(){
+ rotate_extrude(convexity=10)
+ translate([-cnr_rad,0])
+ UsualProfile();
+ translate([0,0,-250])
+ cube([50,50,500]);
}
- translate(appM) circle(r= anchor_rad);
}
}
-module Demo(){
+module DemoProfiles(){
+ translate([0,0,-2]) color("yellow") AnchorWallProfile();
color("red") AnchorProfile();
translate([0,0,2]) color("black") NearAnchorProfile();
- color("blue") UsualProfile();
+ translate([0,0,4]) color("blue") UsualProfile();
+ translate([0,0,-4]) color("pink") WebProfile();
}
-Demo();
+//DemoProfiles();
+KsafeBase();