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Problem with Spirals within spirals
show user profile  Bobby Peru
Hi guys,

I'm trying to make a spiral cable and have successfully made a long spiral using lofting. This spiral is then encased in a long tube... My problem is that I need to make 5 of these spirals and tubes spiral along each other for their entire length making one big spiral out of the smaller ones. I've included a picture of a single encased spiral to give you an idea. I have no clue how to go about this! Maybe a modifier I've never encountered before?

Hmm... I hope you guys can help, as I'm more than a little confused on this one...

Thanks for your time!


read 1026 times
6/7/2011 4:57:02 PM (last edit: 6/7/2011 4:57:02 PM)
show user profile  Nik Clark
You might have more success using the helix spline primitive.

read 1014 times
6/7/2011 5:49:43 PM (last edit: 6/7/2011 5:49:43 PM)
show user profile  Coxy
Yeah. Use a helix and then make it renderable. Or use the helix as a constraint for another shape.
read 1011 times
6/7/2011 5:52:13 PM (last edit: 6/7/2011 5:52:35 PM)
show user profile  Garp
You mean something like that?

Unable to display content. Adobe Flash is required.

edit: is it just me or is screencast super slow today?!

read 1000 times
6/7/2011 7:37:54 PM (last edit: 6/7/2011 7:44:37 PM)
show user profile  kiko
Or just use a helix, give it a lot of turns, make it rendereable on viewport and array it in Z rotation.


-- David --
read 982 times
6/7/2011 7:58:05 PM (last edit: 6/7/2011 7:58:05 PM)
show user profile  Dr. Jim
I must be missing something.

He doesnt just want an offset Helix.

He wants a helix AS the strand, INSIDE a tube....that then is helixed and offset again.

read 976 times
6/7/2011 8:04:19 PM (last edit: 6/7/2011 8:04:19 PM)
show user profile  Garp
The problem with the helix is that you don't have control over the number of verts per turn.

read 969 times
6/7/2011 8:17:07 PM (last edit: 6/7/2011 8:17:07 PM)
show user profile  kiko
Indeed, what gives??

It's the only spline to not have interpolation settings (that I know of), recently i had to trace over a helix with a line, converting it to editable spline had no effect on interpolation.... crappy helix.

Anyways back on topic, maybe vert count does not matter to the TC, although Garp's solution is cool (as usual).


-- David --
read 965 times
6/7/2011 8:24:54 PM (last edit: 6/7/2011 8:24:54 PM)
show user profile  vierendeel
Here's an alternative to Garp's method, which is more along the lines of what the OP may have used (lofting).

read 961 times
6/7/2011 8:31:36 PM (last edit: 6/7/2011 8:31:36 PM)
show user profile  Bobby Peru
Wow! Thanks for all the replies!

I've picked up bits and pieces from the different suggestions and eventually made the render below. I need the metal spirals within the tubes to have a lot more turns than the tubes themselves, but I figure I can do that by spiralling them first and then using path deform to make them follow the tubes.

Only problem now is that they seem to always rotate randomly when I use pathdeform. I've tried resetting the pivots for both the mesh and the deformation path spline, but for some reason the pathdeformed object is always askew. Any idea why?

Again, thanks for all the replies and your help! I absolutely love this forum :)


read 903 times
6/10/2011 5:28:33 PM (last edit: 6/10/2011 5:28:33 PM)
show user profile  Garp
I did miss the point in the first vid, didn't I?

The good thing with max and its modifiers is that you can keep almost everything procedural, so that you can reajust most f the parameters later (someone called it the 'ultimate undo').

Unable to display content. Adobe Flash is required.

Hope I got it right this time ;)

read 891 times
6/10/2011 11:06:32 PM (last edit: 6/10/2011 11:06:32 PM)
show user profile  Bobby Peru
You got it exactly right!

I would never have thought of doing it that way. It offers much more control. Thanks!

This is where it's at right now. I need to tweak the materials and a couple of details, but the tricky part is over it seems :)

The rendertime is pretty horrific though. Half an hour in this size :)

Thanks everybody!


read 851 times
6/13/2011 7:35:32 PM (last edit: 6/13/2011 7:35:32 PM)
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