[OpenSCAD] Newbie Hull problem

Antonio Bueno atnbueno at gmail.com
Sun Jan 28 15:25:29 EST 2018


Hello Chris.

Other than the flicker of coincident faces, I have no problem going down to
-90.

I've added a "scale(1.001)" before "port(0)" as a workaround for them and I
get this with -90:
[image: Imágenes integradas 1]

2018-01-28 20:46 GMT+01:00 MDFChris <openscad at oddys.plus.com>:

> Hi All
>
> I've just started using OpenSCAD and so far I'm liking it, it suits my
> engineering mind however I'm having an issue with a simple hull ?
>
> I'm designing a nozzle for my 3D printer which seems simple enough using a
> difference of two'd hull'd cubes:
>
> //Nozzle
> nozzle();
> module nozzle(){
>         difference(){
>                 port(1);
>                 port(0);
>     }
> }
> module port(d){
>         hull() {
>                 cube([19.5+d*2,15+d*2,2],center=true);
>         translate([-10,4,15])
>         rotate([0,-45,0])
>         cube([7+d*2,14+d*2,2],center=true);
>         }
> }
> however if I increase the rotation angle of the outlet port beyond -45
> (i.e.
> -50 or more) the open end starts to close up ?, I can't figure if I'm doing
> something wrong or is this some sort of rounding error ?
>
> Chris
>
>
>
>
> --
> Sent from: http://forum.openscad.org/
>
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>



-- 
Saludos,
Antonio
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