higher mixing vessel for more convenient mixing

1 files changed, 9 insertions, 8 deletions

diff --git a/mixing.scad b/mixing.scad
index ecbdfd8..fae9d52 100644
--- a/mixing.scad
+++ b/mixing.scad
@@ -1,54 +1,55 @@
 s=2;				/* shell thickness */
 defaultvolume=20*10*20;		/* volume for testing */
 
 /* side of the cube, containing half the volume */
 function mixing_hvs(volume=defaultvolume) = pow(volume/2,1/3);
 /* vessel dimensions */
-function mixing_size(volume=defaultvolume) = let(hvs = mixing_hvs(volume=volume)) [2*hvs+3*s,hvs+2*s,hvs+2*s];
+function mixing_size(volume=defaultvolume) = let(hvs = mixing_hvs(volume=volume)) [2*hvs+3*s,hvs+2*s,hvs+3*s];
 
 module mixing(
 	volume=defaultvolume,	/* volume in cubic mm */
 	what="altogethernow"	/* vessel|splitter|altogethernow */
 ) {
  g=1;				/* guide diameter */
  hvs = mixing_hvs(volume=volume);
+ sz = mixing_size(volume=volume);
  if(what=="vessel") {
-  sz = mixing_size(volume=volume);
   translate([-sz[0]/2,-sz[1]/2,0]) difference() {
    cube(size=sz);
    translate([s,s,s])
-   cube(size=[2*hvs+s,hvs,hvs+s+1]);
+   cube(size=[2*hvs+s,hvs,sz[2]+1]);
   }
   for(mx=[0,1]) mirror([mx,0,0]) {
    // horizontal guide
    translate([s/2+g/2,0,s]) rotate([90,0,0]) cylinder(d=g,h=hvs+s,center=true,$fn=12);
    for(my=[0,1]) mirror([0,my,0]) {
     // vertical guide + crowning sphere
     translate([s/2+g/2,hvs/2,0]) {
-     cylinder(d=g,h=hvs+2*s-g/2,$fn=12);
-     translate([0,0,s+hvs+s-g/2]) sphere(d=g,$fn=12);
+     cylinder(d=g,h=sz[2]-g/2,$fn=12);
+     translate([0,0,sz[2]-g/2]) sphere(d=g,$fn=12);
     }
    }
    // level
    translate([0,0,s+hvs]) {
     translate([s/2+hvs,0,0]) rotate([90,0,0]) cylinder(d=g,h=hvs+s,center=true,$fn=12);
     for(my=[0,1]) mirror([0,my,0]) {
      translate([s/2+g/2,hvs/2,0]) rotate([0,90,0]) cylinder(d=g,h=hvs-g/2+s/2,$fn=12);
     }
    }
   }
  }else if(what=="splitter") {
+  z1 = sz[2]; z2 = 2*z1;
   hull() {
-   translate([-s/2,-hvs/2,0]) cube(size=[s,hvs,hvs+2*s]);
+   translate([-s/2,-hvs/2,0]) cube(size=[s,hvs,z1]);
    cd=hvs/2;
-   for(yz=[ [0,2*hvs], [-hvs/2+cd/2,hvs+2*s], [hvs/2-cd/2,hvs+2*s] ])
+   for(yz=[ [0,z2], [-hvs/2+cd/2,z1], [hvs/2-cd/2,z1] ])
    translate([0,yz[0],yz[1]])
    rotate([0,90,0]) cylinder(d=cd,h=s,$fn=60,center=true);
   }
-  translate([0,0,2*hvs]) sphere(d=2*s,$fn=30);
+  translate([0,0,z2]) sphere(d=2*s,$fn=30);
  }else if(what=="altogethernow") {
   mixing(volume=volume,what="vessel");
   translate([0,0,s]) mixing(volume=volume,what="splitter");
  }
 }