Rail revolve Problem

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 From:  Oliver (FRITZ57)
3185.1 
I'm sure this issue has been addressed already, but I can't find it on the forum :

Simple Arc as profile, simple Rounded Rect as Rail,


Rail Revolve,

what a mess !

Any ideas ?
Oliver
www.o5m6.de

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 From:  eric (ERICCLOUGH)
3185.2 In reply to 3185.1 
Try drawing the rail and the arc profile in plan (top) view and running 'sweep' ..
That worked for me.
eric
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 From:  eric (ERICCLOUGH)
3185.3 In reply to 3185.1 
And ... rail revolve worked for me, too ...

was your revolve axis point in the dead center of your rectangle and exactly vertical ...

that is a necessary element in the process.

It looks like your axis was attached to the midpoint of one of the sides

cheers,
eric
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 From:  Michael Gibson
3185.4 In reply to 3185.1 
Hi Oliver, yeah I think that eric is correct above.

Just to clarify, it appears that the axis you picked was not centered, it was shifted towards this direction:



So that caused a kind of compression to happen in the areas along that side.

If you pick the axis to be centered in that shape you should get a much better result.

But also along with eric I would suggest using Sweep for shapes that have a more rectangular aspect to them rather than rail revolve.

The reason why is rail revolve has a centralized pivoting and radial nature to it, which will involve a kind of stretching aspect to the result if your path is not of uniform size in all directions, something like this:



For some things that may be fine, but I suspect it is not really what you would want for your case.

A sweep on the other hand moves a profile around the path and rotates it around the local point on the path instead of only from one center pivot point. So sweep does something like this instead:



That's probably more what you would want because the profile shape is not being stretched, it is staying the same size as it slides along the path.

But note that with sweep the size of the profile curve should not be too large for the turns in the path - if it is too large it will cause things to get bunched up and cross over each other.

Also for doing something that has a rounded corner type shape you may want to just draw a regular sharp cornered box and use Fillet on it to round the edges.

- Michael

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 From:  Frenchy Pilou (PILOU)
3185.5 
---
Pilou
Is beautiful that please without concept!
My Gallery
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 From:  Oliver (FRITZ57)
3185.6 
Thanks a lot, guys, the axis was in fact centered on the rail curve and not inside the rail.
Otherwise it works perfect as expected.
And, Michael, thank you for the kind lesson, and most of all
congrats for the new beta, awful work, as usual.
Oliver
www.o5m6.de
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 From:  Nick (BODINI)
3185.7 In reply to 3185.6 
"awful work, as usual."

lol. must mean something else in german. :-P
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 From:  Brian (BWTR)
3185.8 In reply to 3185.7 
Aweful!
Brian
(bloody Endglisht!)
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 From:  Lemo (LEMONNADO)
3185.9 
Yup... it's horrible... But we are used to it!

Haha

In German it's cynicism. More like a nudge between peers.
It is supposed to relay mutual feelings of a dash of envy, respect, appreciation, and high regard of the matter titled as 'aweful'.
In short... a rude congenial compliment. Usually the creator of the work is then giving it away for free... 8)))))
well... maybe I made that last one up.

Happy holidays
Lemo
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 From:  Oliver (FRITZ57)
3185.10 
Oh, sorry, Michael, I meant awesome, great, terrific, excellent !!!
Oliver
www.o5m6.de
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 From:  WillBellJr
3185.11 
Awefully awesome - I describe MoI like that all the time... ;-)

-Will
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