Hi,
I try to create a loft with guide line (see attached), this should be a symmetric loft, but I got this (see Attached below). I really don't know why, may be some option I didn't pick. Anybody can tell me why or how to correctlly create a symmetric loft.
Thank you very much
Ping
Ping,
To assure what you are looking for create the splined curve at all 4 quadrants of the
circle. Select the other 3 as additional profiles and that should give you what you are looking for.
Thanks Scott
I have to create another symmetric sketch then add to guide line, any way can get symmetric loft?
Thanks
Ping
Ping,
Try copying and pasting the first sketch to the next plane
90° away. Then to create the third and forth ones mirror the first and second.
The top circle is your guide curve. You may want to add a circle at the bottom
as well for a second guide curve.
Understand that sometimes you have to create all of this to get smooth geometry.
Hi Scott
I made a loft using 4 guide curves, the shape of model is very good, it is I wanted. But on the right side of model, the surface spilit to two part, Left side only one surface (see attached), I don't know why it is not symmetric, I use symmetric sketch on both side.
Thanks
Ping
Part of it is you are going from a round to a square.
Looks better though.
I would also suggest that your profile sketches be one segment.
Use the fit spline command to do that in the spline toolbar. For some
reason if the sketches have different start points or different numbers of segments
this messes with the smoothness of the model surface.
I was just thinking, are the top circle and the bottom rectangle your
profiles or your guide curves? They should be your profiles. And use the
fit spline on the square so it is one segment. Then use the side curves as your
guide curves.
Ping,
Here is how I would do it. Without a guide curve at all.
Hi Ping,
In addition to Charles method, which is a good way to do it, the key to getting a symmetrical loft, and the edge transistion to occur the way you want it is to first assign 4 sketch points in your circle profile. When you do the bpundary, use "add connector" to snap four connectors to the sketch points that you just created.
Regards
Mark
Ping,
Try copying and pasting the first sketch to the next plane
90° away. Then to create the third and forth ones mirror the first and second.
The top circle is your guide curve. You may want to add a circle at the bottom
as well for a second guide curve.
Understand that sometimes you have to create all of this to get smooth geometry.