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pjotrx

Half length Duplo compatible straight train track rails

by pjotrx Dec 1, 2013
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hi .. have changed the scad to get a mor stable railway for small kids :-)


module supportstructure(x,y,z,a,l){

translate(v=[x,y,z]){

  rotate(a=a,v=[0,0,1]){

     union(){

      // internal support structure

        for (i=[1:l/20.65]){

          difference(){

              // rings  

                  translate(v=[8+i*16.0,15.85/2,0])

                  cylinder(h=6,r=findiam/2+1.25);                 

                  translate(v=[8+i*16.0,15.85/2,-1])

                  cylinder(h=20,r=findiam/2);

            translate(v=[-1,-1,-1])

           cube(size=[150,15.5-12.6+3,16]);

          }

       }

       // grip profile

       for (i=[0:(l*127/128.2)]){

          translate(v=[i,6,7.35])

          cube(size=[0.5,12,0.5]);

       }

     }

  }

}

}

module singlerail3(x,y,z,a,l){

translate(v=[x,y,z]){

  rotate(a=a,v=[0,0,1]){

       rotate(a=90,v=[0,1,0])

       rotate(a=90,v=[0,0,1])

        linear_extrude(height=l)

          polygon(

             points=[[0,5.35],[0,7.35],[11.4-extrawidth,7.35],[12.4-extrawidth,13.70],

                          [13.5,13.70],

                          [13.5,13.70],

                          [13.5,6.35],

                      [12,4.85],  [12,0],[10.5,0],

                      [10.5,3.85], [9,5.35]]  );

 }

}

}

You're right that making the rail thicker may block the connector hole. I was hoping that you would not need that much extra material :-)

Maybe you can post your modification as a derivative, so that anybody can download it directly instead of having to copy-paste from your comment.

i can do it.. i thought you want add it in yours :-)

Well, it's your improvement. I'll refer to your remix in the description of my part.

just made an remix ..