You know the wiki? https://github.com/revarbat/BOSL2/wiki/threading.scad
For me it is all clear. Try changing $sloop with this example (sliced
thread):

include <BOSL2/std.scad>
include <BOSL2/threading.scad>
$slop = 0.1;
front_half(y=.1) back_half(y=-.1)
{
threaded_rod(spin=180, d=30, l=20, pitch=2, $fa=1, $fs=1);
threaded_nut(od = 50, id=30, h=20, pitch=2, $fa=1, $fs=1);
}
[image: Bildschirmfoto 2021-12-21 um 12.01.24.png]

Am Di., 21. Dez. 2021 um 10:34 Uhr schrieb roald.baudoux@brutele.be:

I typically use a value of 0.5 for my tolerance.  I include this manually
in my construction because I want to control which parts are made smaller
and which ones are made larger.

I've never seen the $slop variable before.

Kevin

On Tue, Dec 21, 2021 at 4:34 AM roald.baudoux@brutele.be wrote:

Besides setting $slop globally you always can set it at each call to get a
specific tolerance for one part:

threaded_rod(spin=180, d=30, l=20, pitch=2, $fa=1, $fs=1, $slop=.3);
threaded_nut(od = 50, id=30, h=20, pitch=2, $fa=1, $fs=1, $slop=.5);

It has the same effect as $fn for circles and spheres.

So does $slop grow the part by this amount?, i.e. increase each dimension
by that amount?
Thanks
Kevin

On Tue, Dec 21, 2021 at 8:19 AM Ronaldo Persiano rcmpersiano@gmail.com
wrote:

I don't have any experience with BOSL2 threads. The intention of my post is
to call to your attention that it is possible to control the clearance on a
part basis by using $slop as a parameter of the part module call instead of
setting it globally.

Looking at the code and experimenting a little bit, I found that $slop acts
only on internal threads by increasing its diameter by 4*slop. It seems to
not have any effect on threaded rods. The documentation of threaded rods
needs updating.

Em ter., 21 de dez. de 2021 às 17:32, Kevin Toppenberg kdtop3@gmail.com
escreveu: