$fs = 1; // limit for interpolation element size
$fa = 0.1; // minimum subtended angle for interpolation element size

in2mm = 25.4;
otod = in2mm * 5 / 2;
otid = in2mm * 9 / 4 + 1;
itod = in2mm * 3 / 4;
itid = in2mm * 5 / 8;
itcr = 1;

cap_height = 10;
cap_depth = 10;
cross_depth = 10;
wall_thickness = 4;

channel_w = 20;

eps = 0.01;