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authorMichael Krelin <hacker@klever.net>2018-07-25 21:42:12 (UTC)
committer Michael Krelin <hacker@klever.net>2018-07-25 21:42:12 (UTC)
commit66ee4d791039758827518a354b2d964348c863b6 (patch) (side-by-side diff)
tree6a48d998dfc99cb97545a1b03c96c5ce5172ab8c
parent5ab7711ef9b9180121e7dc4e8d33afd5a5ff97d1 (diff)
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add liner tolerance
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--multimixer.scad13
1 files changed, 8 insertions, 5 deletions
diff --git a/multimixer.scad b/multimixer.scad
index 80f41f1..c7b3489 100644
--- a/multimixer.scad
+++ b/multimixer.scad
@@ -11,27 +11,30 @@ module multimixer(
inputs = 4,
minshell = 2*extrusion_width,
shell = 5*extrusion_width,
pf = pushfit_embeddest,
debug = 0, // how many inputs -1 the debug cutout spans
print = false,
+
+ liner_d_tolerance=.2
) {
fnd = 4*PI; fnr = 2*fnd;
pushfit_d = pf_d(pf);
pushfit_h = pf_h(pf);
angular_step = 360/inputs;
inputogon_angle = 180*(inputs-2)/inputs;
+ lod = liner_od+liner_d_tolerance; // effective liner diameter
sinsin = sin(angle)*sin(angular_step/2);
function l_to(d) = d*cos(asin(sinsin))/sinsin;
- l_output = liner_od;
+ l_output = lod;
l_input = l_to(pushfit_d/2+minshell);
l_fork = l_to(liner_id/2);
- l_narrow = l_to(liner_od/2+minshell);
+ l_narrow = l_to(lod/2+minshell);
module forinputs() {
for(zr=[0:angular_step:359]) rotate([0,0,zr]) rotate([0,angle,0]) children();
}//forinputs module
module foroutput() {
rotate([180,0,0]) children();
@@ -73,21 +76,21 @@ module multimixer(
cylinder(d=pushfit_d+shell*2,h=epsilon,$fn=pushfit_d*fnd);
}
}
forinputs() {
translate([0,0,l_input]) pushfit(pf);
translate([0,0,l_narrow]) {
- cylinder(d=liner_od,h=l_input+1-l_narrow,$fn=liner_od*fnd);
+ cylinder(d=lod,h=l_input+1-l_narrow,$fn=lod*fnd);
mirror([0,0,1]) translate([0,0,-epsilon])
- cylinder(d1=(liner_id+liner_od)/2,d2=liner_id,h=liner_id,$fn=liner_od*fnd);
+ cylinder(d1=(liner_id+lod)/2,d2=liner_id,h=liner_id,$fn=lod*fnd);
}
cylinder(d=liner_id,h=l_input+epsilon,$fn=liner_id*fnd);
}
foroutput() {
translate([0,0,l_output]) pushfit(pf);
- cylinder(d=liner_od,h=l_input+1,$fn=liner_od*fnd);
+ cylinder(d=lod,h=l_output+1,$fn=lod*fnd);
}
hull() {
forinputs()
translate([0,0,l_fork]) cylinder(d=liner_id,h=epsilon,$fn=liner_id*fnd);
foroutput()
cylinder(d=liner_id,h=epsilon,$fn=liner_id*fnd);