include <BOSL2/std.scad>

  include <BOSL2/turtle3d.scad>

  include<BOSL2/skin.scad>

   // Auto-generated from DXF at 2026-03-04 12:09:49

   path1 = [ [142.351,-41.9274],[133.517,-35.0189],[124.223,-28.7434],[114.513,-23.1316],[104.436,-18.2108],[98.1016,-15.5478],[85.5016,-10.9843],[72.6577,-7.16119],[59.6132,-4.09135],[55.8375,-3.35075],[37.1908,-0.252121],[18.4319,2.07327],[-0.406982,3.62149],[-19.2938,4.38988],[-32.3781,4.46426],[-163.992,3.32967]];

   path2= [[-163.425,-66.3214],[-108.964,-65.7541],[-91.1776,-65.8562],[-70.3575,-66.7065],[-49.5844,-68.344],[-28.8882,-70.7665],[-8.29855,-73.9704],[12.1551,-77.9511],[22.6352,-80.5282],[33.8784,-84.0532],[44.8669,-88.3059],[55.5538,-93.2683],[57.9586,-94.577],[62.7517,-97.8196],[67.0805,-101.66],[70.871,-106.033],[76.6622,-113.67] ] ;

color("blue")stroke(path1);

color("red")stroke(path2);

//path_sweep(circle(10),path1, closed=false);

reverse engineering of sax bell I got two curves and import it to openscad.\ Now I need a way to build central path and diameter curve.\ Or I need to seeep circle between these pathes? ``` include <BOSL2/std.scad> ``` ``` include <BOSL2/turtle3d.scad> ``` ``` include<BOSL2/skin.scad> ``` ``` // Auto-generated from DXF at 2026-03-04 12:09:49 ``` ``` path1 = [ [142.351,-41.9274],[133.517,-35.0189],[124.223,-28.7434],[114.513,-23.1316],[104.436,-18.2108],[98.1016,-15.5478],[85.5016,-10.9843],[72.6577,-7.16119],[59.6132,-4.09135],[55.8375,-3.35075],[37.1908,-0.252121],[18.4319,2.07327],[-0.406982,3.62149],[-19.2938,4.38988],[-32.3781,4.46426],[-163.992,3.32967]]; ``` ``` ``` ``` path2= [[-163.425,-66.3214],[-108.964,-65.7541],[-91.1776,-65.8562],[-70.3575,-66.7065],[-49.5844,-68.344],[-28.8882,-70.7665],[-8.29855,-73.9704],[12.1551,-77.9511],[22.6352,-80.5282],[33.8784,-84.0532],[44.8669,-88.3059],[55.5538,-93.2683],[57.9586,-94.577],[62.7517,-97.8196],[67.0805,-101.66],[70.871,-106.033],[76.6622,-113.67] ] ; ``` ``` color("blue")stroke(path1); ``` ``` color("red")stroke(path2); ``` ``` //path_sweep(circle(10),path1, closed=false); ```

I try closest points, not as good.

include <BOSL2/std.scad>

  include <BOSL2/turtle3d.scad>

  include<BOSL2/skin.scad>

   // Auto-generated from DXF at 2026-03-04 12:09:49

   path1 = [ [142.351,-41.9274],[133.517,-35.0189],[124.223,-28.7434],[114.513,-23.1316],[104.436,-18.2108],[98.1016,-15.5478],[85.5016,-10.9843],[72.6577,-7.16119],[59.6132,-4.09135],[55.8375,-3.35075],[37.1908,-0.252121],[18.4319,2.07327],[-0.406982,3.62149],[-19.2938,4.38988],[-32.3781,4.46426],[-163.992,3.32967]];

   path2= [[-163.425,-66.3214],[-108.964,-65.7541],[-91.1776,-65.8562],[-70.3575,-66.7065],[-49.5844,-68.344],[-28.8882,-70.7665],[-8.29855,-73.9704],[12.1551,-77.9511],[22.6352,-80.5282],[33.8784,-84.0532],[44.8669,-88.3059],[55.5538,-93.2683],[57.9586,-94.577],[62.7517,-97.8196],[67.0805,-101.66],[70.871,-106.033],[76.6622,-113.67] ] ;

color("blue")stroke(path1);

color("red")stroke(path2);

//path_sweep(circle(10),path1, closed=false);

path0=resample_path(path1,20,closed=false);

for (pt=path0){

c1 = path_closest_point(path2, pt);

pt2 =c1[1];

path3=[pt,pt2];

color("red") translate(path3) circle(d=3, $fn=12);

stroke([pt,c1[1]]);

//echo(path3);

cpt=[pt[0]-(pt[0]-c1[1][0])/2,pt[1]-(pt[1]-c1[1][1])/2];

//echo("cpt=",cpt);

color("red") translate(cpt) circle(d=3, $fn=12);

}

``` I try closest points, not as good. include <BOSL2/std.scad> ``` ``` include <BOSL2/turtle3d.scad> ``` ``` include<BOSL2/skin.scad> ``` ``` // Auto-generated from DXF at 2026-03-04 12:09:49 ``` ``` path1 = [ [142.351,-41.9274],[133.517,-35.0189],[124.223,-28.7434],[114.513,-23.1316],[104.436,-18.2108],[98.1016,-15.5478],[85.5016,-10.9843],[72.6577,-7.16119],[59.6132,-4.09135],[55.8375,-3.35075],[37.1908,-0.252121],[18.4319,2.07327],[-0.406982,3.62149],[-19.2938,4.38988],[-32.3781,4.46426],[-163.992,3.32967]]; ``` ``` ``` ``` path2= [[-163.425,-66.3214],[-108.964,-65.7541],[-91.1776,-65.8562],[-70.3575,-66.7065],[-49.5844,-68.344],[-28.8882,-70.7665],[-8.29855,-73.9704],[12.1551,-77.9511],[22.6352,-80.5282],[33.8784,-84.0532],[44.8669,-88.3059],[55.5538,-93.2683],[57.9586,-94.577],[62.7517,-97.8196],[67.0805,-101.66],[70.871,-106.033],[76.6622,-113.67] ] ; ``` ``` color("blue")stroke(path1); ``` ``` color("red")stroke(path2); ``` ``` //path_sweep(circle(10),path1, closed=false); ``` ``` path0=resample_path(path1,20,closed=false); ``` ``` for (pt=path0){ ``` ``` c1 = path_closest_point(path2, pt); ``` ``` pt2 =c1[1]; ``` ``` path3=[pt,pt2]; ``` ``` color("red") translate(path3) circle(d=3, $fn=12); ``` ``` stroke([pt,c1[1]]); ``` ``` //echo(path3); ``` ``` cpt=[pt[0]-(pt[0]-c1[1][0])/2,pt[1]-(pt[1]-c1[1][1])/2]; ``` ``` //echo("cpt=",cpt); ``` ``` color("red") translate(cpt) circle(d=3, $fn=12); ``` ``` } ```