Hi Pierre, I have attached here a new Pipe command which makes it quicker to create hollow pipes around many curves in one shot.

However, this will only work properly on a smooth curve, you will have to wait until MoI version 2.0 before this will handle sharp corners properly.

To install this new command, download the attached Pipe.zip file. Copy the 2 included files (Pipe.htm, Pipe.js) to the \commands subfolder under MoI's main installation folder in c:\Program Files.

That will install the new command, but you also need to add a new shortcut key to trigger it. To do that, go to Options / Shortcut keys, and push the "Add" button, and put whatever you wish for the key (for example P), and then for the command put in Pipe.

Now when you push that key the new Pipe command will be launched.

Select your rail curves first, then run the command. Then you will have the options for Outer and Inner radius which you can set in the command options area in the upper right corner of the MoI window.

So for example, taking these curves:



You can then run Pipe and create this:



This should speed up the creation of a larger number of pipes or tubing as you were asking about.

I hope this is useful!

- Michael