I have 2 parallel vertical cylinders with different diameters that are
adjacent and touching. I want to fill the space 'between' the cylinders to
join them securely. I did think about creating a polygon block that I join
with the two cylinders before taking the inner cylinders away to make a
straight edge join but I thought this is a simple enough model to learn how
to use the roundanything library to create a fill with a radius of my
choosing. However , being a noob, Not sure where to start.
back story: The larger cylinder fits over my monitor stand. The smaller
Cylinder is for an anglepoise arm for a webcam/ video light. I just need
to be able to join them nicely so that they don't break apart.
Here's what I've got so far.:
include <Round-Anything/MinkowskiRound.scad>;
$fn=10;
br=32;
sr=12.3;
bw=5;
sw=4;
height=12;
boundingEnvelope=[50,50,50];
OR=0.7;
IR=1;
enable=1;
minkowskiRound(OR, IR, enable, boundingEnvelope) {
union(){
translate([0,0,-10]){
difference(){
cylinder (height,br+bw,br+bw,center=true);
cylinder (height+2,br,br,center=true);
}
translate([br+sr+sw+bw,0,0]){
difference(){
cylinder (height,sr+sw,sr+sw,center=true);
cylinder (height+2,sr,sr,center=true);
}
}
}
}
}
But I just get a spinning circle on my Mac.
not sure how the bounding envelope works or how long I should expect to
wait for a result.
Any help appreciated:
Chris Johnson
I’ve learned that it’s much faster to make a cylinder by using linear_extrude() circle() than by using cylinder() — and it’s very very much faster to make a hollow cylinder by using linear_extrude() difference() { circle(); circle();} than by using difference() { cylinder(); cylinder();}.
I’ve also discovered that hull() and offset() are much faster than minkowski().
So try this (which, on my machine, renders in less than one second):
$fn=150;
br=32;
sr=12.3;
bw=5;
sw=4;
height=12;
linear_extrude(height=height)
difference() {
hull() {
circle(r=br+bw);
translate([br+sr+sw+bw,0,0]) circle(r=sr+sw);
}
circle(r=br);
translate([br+sr+sw+bw,0,0]) circle(r=sr);
}