PDA

View Full Version : orienting rail extrude



Skinner3D
06-03-2010, 03:15 PM
I am making am making a spiral staircase for a friend, but I am having trouble with the banister. I built the spline and the intial polygon shape, but when I rail extrude the intial shape doesn't stay in the right orientation. I.E. the top of the banister eventually twists around and becomes the bottom by the end of the extrude.
I think this has something to do with the fact that my spline curve moves in all 3 directions. I didn't have this trouble when I extruded curved guide rails for my hangar awhile ago. (Those never changed in the Y direction).
Is there a fix or another tool that I should be using?

Nicolas Jordan
06-03-2010, 03:33 PM
Try selecting your curve and hitting the "f"(flip polygons) key to flip the head and tail of the curve around then try Rail Extrude again and see if it works any better.

TripD
06-03-2010, 03:50 PM
You could also use 2 rails. Just copy the first spline and move it up to the upper edge of the shape you want to extrude. The 2nd spline will keep the orientation better.

Skinner3D
06-03-2010, 04:44 PM
Thank you TripD, that worked :)

Nicolas: I tried your suggestion and it created some really strange results :D

Nicolas Jordan
06-03-2010, 04:48 PM
T

Nicolas: I tried your suggestion and it created some really strange results :D

You must have had it flipped the right way to start with then. :D

OFF
06-04-2010, 12:30 AM
Px_Bezier 011 can help
http://www.pictrix.jp/?p=3740

biliousfrog
06-04-2010, 02:13 AM
LWCAD's profiling tools are a great alternative to the standard extrusion method, they are the tool which I use most, worth the price of the plugin alone IMO.

erikals
06-07-2010, 05:32 AM
Matt used a plugin in his weld tutorial you might want to use...
http://www.newtek.com/forums/showthread.php?t=99509

OnlineRender
06-07-2010, 05:36 AM
some nice rail extrude tuts done by proton "closepegtut" ... incase anybody dosn't know how to do it : , in short draw spline , create disc , flip poly , rail extrude

erikals
06-07-2010, 06:01 AM
Matt used a plugin in his weld tutorial you might want to use...
http://www.newtek.com/forums/showthread.php?t=99509

here we go,
http://www.pictrix.jp/lw/C1st/index.html