Understanding generic_bottle_cap and generic_bottle_neck

[immortel32]

Hello,
I'm trying to make a round container that I will be able to "screw" the lid and the library bottlecaps.scad seems to be exactly what I'm looking for but the documentation is missing information like how to create a bottle_neck with a matching bottle cap.

Can someone help me understanding the matching parameters?

My code looks like this

include <BOSL2/std.scad>
include <BOSL2/bottlecaps.scad>

box_inside_diameter = 120;
thickness = 5;
box_outside_diameter = box_inside_diameter + 2*thickness;
box_height = 35;
logo_ratio = 0.25;
$fn = 100;
chamfer=thickness;

color("yellow", 1.0)difference() {
  translate([0,0,box_height/2]) dicebox();
translate([100,0]) cube([200,200,200], center=true);
}

color("blue", 1.0)difference() {
    translate([0,0, box_height+thickness/2]) 
    rotate ([180,0,0])
        dicelid();
translate([100,0]) cube([200,200,200], center=true);
}        
        
module dicebox() {
    difference() {
        union() {
            translate([0, 0, 0]) 
                generic_bottle_neck(
                    neck_d = box_outside_diameter-thickness*1.25,
                    id = box_inside_diameter,
                    thread_od = box_outside_diameter-thickness*0.8,
                    height = box_height/2,
                    support_d = 0,
                    pitch = thickness/2,
                    round_supp = false,
                    anchor = "support-ring",
                    spin = 0,
                    orient = UP);
            translate([0, 0, -box_height/4])cyl(l=box_height/2, d1=box_outside_diameter, d2=box_outside_diameter);
        }
        translate([0, 0, thickness]) cyl(l=box_height-thickness+0.01, d1=box_inside_diameter, d2=box_inside_diameter);
    }
}

module dicelid() {
//    color("red",1.0)logo();
    difference() {
            generic_bottle_cap(
                thread_depth=thickness*0.2,
                neck_od=box_outside_diameter-thickness*1.1,
                pitch = thickness/2,
                round_supp = false,
                spin = 0,
                orient = UP,
                height=box_height/2);
    //                logo();
    }
}

[immortel32]

I've been able to make something working

Basically, then orient for the generic_bottle_neck must be UP and for generic_bottle_cap.

The threads for the neck printed correctly but the ones for lid was very stringy. The good news is that after cleaning up and trying few times, I was able to screw it. I have too many turns to make so I will need to reduce probably the height of the neck and the cover.

Still, I'm would need help on how to make a perfect match between the 2 components and having a clean print.

Any help would be appreciated. Below is my updated code.

include <BOSL2/std.scad>
include <BOSL2/bottlecaps.scad>

box_inside_diameter = 120;
thickness = 5;
box_outside_diameter = box_inside_diameter + 2*thickness;
box_height = 35;
logo_ratio = 0.25;
$fn = 100;
chamfer=thickness;

//color("yellow", 1.0)difference() {
  translate([0,0,box_height/2]) 
        dicebox();
//translate([0,100]) cube([200,200,200], center=true);
//}

//color("blue", 1.0)difference() {
    translate([box_outside_diameter+2,0, 0.01]) 
    rotate ([180,0,0])
        dicelid();

//translate([0,100]) cube([200,200,200], center=true);
//}        
        
module dicebox() {
    difference() {
        union() {
            translate([0, 0, 0]) 
                generic_bottle_neck(
                    neck_d = box_outside_diameter-thickness*1.25,
                    id = box_inside_diameter,
                    thread_od = box_outside_diameter-thickness,
                    height = box_height/2,
                    support_d = 0,
                    pitch = thickness/2,
                    round_supp = false,
                    anchor = "support-ring",
                    spin = 0,
                    orient = UP);
            translate([0, 0, -box_height/4])cyl(l=box_height/2, d1=box_outside_diameter, d2=box_outside_diameter);
        }
        translate([0, 0, thickness/2]) cyl(l=box_height-thickness+0.01, d1=box_inside_diameter, d2=box_inside_diameter);
    }
}

module dicelid() {
    color("red",1.0)logo();
    translate([0,0,-thickness/2-0.5]) intersection() {
        union() {
            difference() {
                generic_bottle_cap(
                    thread_depth=thickness*0.2,
                    neck_od=box_outside_diameter-thickness-thickness*0.2,
                    pitch = thickness/2,
                    spin = 0,
                    orient = DOWN,
                    height=box_height/2+0.5);
                logo();
            }
            translate([0,0,0.5])cyl(l=thickness,d1=box_outside_diameter, d2=box_outside_diameter);
        }
       cyl(l=box_height*2,d1=box_outside_diameter, d2=box_outside_diameter); 
    }
}


module logo() {
    rotate([0,0,0]) resize([304.37*logo_ratio,387.77*logo_ratio,1]) translate([-28.25-304.37/2, -76.95-387.77/2, -1]) linear_extrude(height=1) import("dm.svg");
}

[kerryland]

I've just found your post and have exactly the same problem. A example showing a "matched" cap and neck would be fantastic. My attempt hasn't had much success. The cap threads just don't fit into the neck. Fiddling with "tolerance" helps (at 0.7 I can screw the cap a bit less than a half turn), but it feels like the threads in the cap need to be narrower to fit in the grooves of the neck, but I can't see any way to adjust that.

    include <BOSL2/std.scad>
    include <BOSL2/bottlecaps.scad>
    roll_w = 54;
    generic_bottle_neck(id= roll_w, neck_d = roll_w+3, thread_od = roll_w + 6,   height=15, support_d = 0.5);
    
    translate([roll_w + 15 ,0,0])
    generic_bottle_cap(tolerance = 0.7, neck_od = roll_w + 3, thread_od = roll_w +6, height=15);

[immortel32]

I've been able to make mine working fine. I pushed the source code in an AI and it generated the code. I will have to study it eventually. But here are some code that is working:

include <BOSL2/std.scad>
include <BOSL2/bottlecaps.scad>

box_inside_diameter = 120;
thickness = 5;
box_outside_diameter = box_inside_diameter + 2*thickness;
box_height = 35;
logo_ratio = 0.25;
$fn = 100;
chamfer=thickness;

//color("yellow", 1.0)difference() {
  translate([0,0,box_height/2]) 
        dicebox();
//translate([0,100]) cube([200,200,200], center=true);
//}

//color("blue", 1.0)difference() {
    translate([box_outside_diameter+2,0, 0.01]) 
    rotate ([180,0,0])
        dicelid();

//translate([0,100]) cube([200,200,200], center=true);
//}        
        
module dicebox() {
    difference() {
        union() {
            translate([0, 0, 0]) 
                generic_bottle_neck(
                    neck_d = box_outside_diameter-thickness*1.25,
                    id = box_inside_diameter,
                    thread_od = box_outside_diameter-thickness,
                    height = box_height/2,
                    support_d = 0,
                    pitch = thickness/2,
                    round_supp = false,
                    anchor = "support-ring",
                    spin = 0,
                    orient = UP);
            translate([0, 0, -box_height/4])cyl(l=box_height/2, d1=box_outside_diameter, d2=box_outside_diameter);
        }
        translate([0, 0, thickness/2]) cyl(l=box_height-thickness+0.01, d1=box_inside_diameter, d2=box_inside_diameter);
    }
}

module dicelid() {
    //color("red",1.0)logo();
    translate([0,0,-thickness/2-0.5]) intersection() {
        union() {
            difference() {
                generic_bottle_cap(
                    thread_depth=thickness*0.2,
                    neck_od=box_outside_diameter-thickness-thickness*0.2,
                    pitch = thickness/2,
                    spin = 0,
                    orient = DOWN,
                    height=box_height/2+0.5);
               // logo();
            }
            translate([0,0,0.5])cyl(l=thickness,d1=box_outside_diameter, d2=box_outside_diameter);
        }
       cyl(l=box_height*2,d1=box_outside_diameter, d2=box_outside_diameter); 
    }
}

[adrianVmariano]

I think that generic bottle threading stuff is very old. I don't know anything about it. You might see if sp_neck and sp_cap work better for you. They are newer and I may have actually tested mating between them. On the flip-side, they come in limited dimensions. You can also go straight to threading.scad and create threads there in a variety of profiles.

If you figure something out about the generic_bottle_neck and cap we can update the manual with more examples or whatever.