I try to model a fence with irregular wood and small metal wire holding each wood.
Obviously I try to use splines for the wire but I have trouble doing it in a efficient manner. Twist-Modifier gave not enought control .
Is pushing and pulling vertex handles on the spline until I get grey hair the only possible way? 
It would be the most straight-forward approach at least.
Set your viewports up so you have at least a top, side and front view. Make one eyelet, do three or four variations. Spread around. Done.
Do bigger distortions at the very end.
If you donāt like the handles, try smooth vertices. (Or even corner and apply subdivisions at the top of the stack.)
Twisted wire
Create a Line, convert to editable spline, subdivide and then duplicate to element.
Apply a twist modifier.
In the āModifier-stackā, expand the āTwistā heading and select center. Move the center to the desired location.
Apply edit-spline modifier to the stack and manipulate the vertices at either end to splay out like a fork. Make these planar so that the object is tile-able.
Add a sweep to the modifier stack and select profile and choose a radius/diameter.
https://www.youtube.com/watch?v=MCtKWnnbAxc
http://www.scriptspot.com/3ds-max/mcg/mcg-holy-twisted-wires
I keep saying that MCG in 3ds max 2016 is useless, but that doesnāt stop the morons defending it.
ā2016 + EXT1/2 + SP3, 2017ā
You need Extensions (Extra $ for āMaintenanceā) to do something so simple!
You sir, are such a troll
At least that seems your major role when ever i read some of your posts
Youāre a GENIUS, no donāt be humble about itā¦you come out all guns blazing calling ppl, inc. me, moronsā¦well i guess that makes you sir a certified GENIUSā¦
Cheersā¦really happy for you.
ā¦but you canāt do the twisted-wire via MCG in standard 3ds max 2016. Only in later releasesā¦
People say 3ds max 2016 was a great release and then cite MCG as a reason for it being great, but the MCG in 3ds max 2016 is incomplete.
Can the MCG in 3ds max 2016 perform the task? People say that 3ds max 2016 was a great release and then cite MCG as a reason for it being so good, but what can the MCG that ships with 3ds max 2016 actually do?
True, you need the Extension for MCG Spline functionalities in max 2016ā¦and yes that costs moneyā¦which I was NOT happy about that a ānormalā user canāt get access to MCG Splinesā¦(for awhile there I boycotted doing MCG Splines because of this factā¦but thatās another storyā¦)ā¦anyway, Iām not here to start any fightsā¦Iāll just do what i doā¦and thatās all there is to itā¦
(btw, Iām in no way a defender of MCGā¦I have no affliliations with AD, I canāt script therefore I do MCGā¦I would criticise the crap out of MCG when I find a bugā¦but main thing is if MCG can help me to do something so I donāt have to sit there and do laborious tasksā¦Iāll use itā¦if it canātā¦wellā¦it simply canātā¦I donāt waste energy going on a crusade against itā¦)