planar chain set

[barbill]

can anybody please tell me what this means please and what i have to do to get around this message coming up thanks billo

[d0gFartz]

this a solids problem you got right.....you want chains to be flat and closed......no curvature onto other planes

[Zero]

Yup. Your chain has to be planer or all existing in 1 2d plane for the operation you are trying to perform. You can use Xform/Squash to make your chain "planer" easily(sp?)

[cadcam]

All so what works some times is in chaining options turn on ignor depths and it will fallow the first depth you pick.

[barbill]

thanks everyone for that, sorry didnt reply earlier have not been in work for a while (flu)

i will try your solutions as soon as i get back

[Machrina]

I would like to extrude a curve created from a trimmed surface but keep getting an error message (operation requires planar chain set). I tried both squashing and ignoring depths when selecting the chain. I created both a NURBS and parametric curve on all edges of the trimmed surface (which is flat as far as I can tell). First I used a break angle of 30, then 60 degrees. Nothing worked! What should I do?

[cadcam]

Machrina share the file and change the coloor of what is giving you the trouble.

 

this way I can see what is going on and give you an answer.

[Machrina]

I uploaded the file:

 

ftp://www.ppcadcam.com/Mastercam_forum/MC...RIMMED_SURF.zip

 

It shows the trimmed surface in blue. I created a curve (green) on all edges of the surface, with a chord height of 0.001, chain type NURBS, break angle 30 degrees. I then offset the chain by 0.5". What I am trying to do is create an .stl file to use as the stock for a part. I want to extrude the curve up 3", but get the "operation requires planar chain set" error. I squashed the curve but that didn't help.

[cadcam]

I have to say this is really weird on whats happening.

Will play some more. But for now download my zip file that contains the solid you need.

[cadcam]

There was some thing it did not like about your wire so I created using are a copy of you boundry and chained that and it worked fine.

 

I had even tried earler to make a spline for your wire and do it and it did not like it eather.

 

But it is fine now.

 

Ok more to ad I went and just changed the smaller for corner Radi to arcs and it works fine now to.

 

I have to say the it did not like the segmented smaller corners.

 

 

One more think if you just change one of the corner like the upper left hand corner it will work.

 

[ 03-13-2003, 04:17 PM: Message edited by: cadcam ]

[Machrina]

Thanks CadCam,

 

I haven't had a chance yet to look at your file, but I appreciate your help.