strange shape after subtract

[ica_cici]

Hi all,

 

I need to make a half round chain for necklace, the link size is 1.60 X 1.62 and the half round wire is 0.40 X 0.20. Each links must have gap 0.0001 (link mouth).

So I use a half round (size 0.40 X 0.20) as object to extrude along an ellipse path (size 1.20 X 1.22), then subtract with a plate (size 1.00 x 0.0001)

 

The problem is, I have a strange shape after subtracting the half round link with the plate. Any idea what is it caused by?

 

I have other question about plotting,

sometimes when printing my drawing from layout one of my chain link just disappear and not printing, but when i change the current color with other and then turn it back to the original color it's turn up.

It really confusing.

 

Help please!

halfround chain.dwg

[cangelo3D]

hello to you too,

 

i opened your .dwg and its seems pretty normal to my pc. Have you checked other visual styles?

 

or maybe some redraw/regen?

[ica_cici]

yes, I have it checked in wire frame and do some redraw/regen, but it's still strange.

[ica_cici]

Hi changelo3D!

I opened my dwg at my colleague computer (he is using mechanical dekstop 2006) it also looks strange. For information I drew it using autocad 2004, cause i more familiar with autocad 2004 than 2008.

But when I opened it in autocad 2008 it looks normal. The question is, why only ellipse path (circle, pline, line path...etc - no problem) has the problem?