OpenScad Help Centre

[curious aardvark]

you missed the first part of the script - load the .scad file or copy and paste the final script.

Okay another tip:

Don't forget that openscad is text based - so you can use normal text tools.
I used copy and paste in the above script.
But say you haven't made fins a module (which i didn't), but want to change all three at once.
Click edit and select Find and Replace.
Then put -5 in the find box and -7 in the replace box. Hit all and f5.
And the angle of all three fins changes.

Admittedly this only works if you haven't used a -5 anywhere else.
But it's surprising how useful it can be.

replacecommandopenscad.jpg

The script and tutorial posts have taken me just over a hour. Only about 10 minutes of that was writing the script.
I could not have done this in a gui cad package in anything close to that time scale. Assuming I could actually get a cad package to do anything that's included in a tutorial, which given all the bloody versions there are of most cad packages, is unlikely.