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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+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") {
translate([-sz[0]/2,-sz[1]/2,0]) difference() {
cube(size=sz);
translate([s,s,s])
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,$fn=12);
for(my=[0,1]) mirror([0,my,0]) {
// vertical guide + crowning sphere
translate([s/2+g/2,hvs/2,0]) {
cylinder(d=g,h=sz[2]-g/2,$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,$fn=12);
}
}
}
}else if(what=="splitter") {
z1 = sz[2]; z2 = 2*z1;
hull() {
translate([-s/2,-hvs/2,0]) cube(size=[s,hvs,z1]);
cd=hvs/2;
for(yz=[ [0,z2], [-hvs/2+cd/2,z1], [hvs/2-cd/2,z1] ])
translate([0,yz[0],yz[1]])
rotate([0,90,0]) cylinder(d=cd,h=s,$fn=60,center=true);
}
translate([0,0,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");
}
}
color("salmon",0.7) mixing(what="altogethernow");
/* vim:set ai sw=1: */
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