cast net horn

hello there;

I was having a trouble about finding good and organised cast net horn for american type (well in here it is called like this) cast net so I decided to design for myself. 

here it is:

usage: 

1. around the outer circle you will need to tie 9 loops for each part. at the end you will have 36 loops to start your cast net. 
2. after two rounds of weaving (or making meshes) you will be in round of widening. you will make 1 widener loop for each 3 loops till the end. so at the end you will have 12 widener on your net and this will go all the way. 
3. while tying braille/puller lines to your net, you will use inner circles of the horn. for each inner circle pass 3 lines and match each of them with last widener column/mesh/lead line etc. 

by that you will have your net tied and organised and braille lines will never scramble. 

have fun and please mind the limits.

p.s. I have added the freecad file as if you may want to make changes.