gistfile1.txt

rail_length=82;
wedge_length=40;
slider_width=20;

// put rail for permanent spool and put in dent for insertion of sliders. --_--- instead of -----
initial_spool=false;
// put wedge on right side
wedge_right=true;
wedge_left=true;

l = 0;
if (wedge_right) {
    l = l+wedge_length;
    }
if (wedge_left) {
    l = l+wedge_length;
    }
if (initial_spool) {
    l = l + wedge_length+2*slider_width;
    }
echo("min length is l=", l);
assert(rail_length > l, "Rail too short!");