I don't want to shell the rectangular protrusions on the sides. But I can't shell anything at all.
This very simple example helps you understand what is happening.
SW doesn`t like zero thickness geometry or degeneracy of some geometry.
You have to enlarge radiuses of your external surfaces or work from inside surface and to thicken it outside.
you can shell something where the internal radius would disappear. my radius is .20 inches and my shell is .25. the issue for shell failure is usually when geometry begins to self interesect. i couldn't open the zip file to look at it because my company is on an older version though.
Yes,I found this yesterday and was surpised,but his geometry is not good somewhere, I attached his file in xt format, please look
without being able to look at the model feature by feature, my guess is that the small rectangles on sides (or the radii associated with those features) are causing the problem. it could also be the raised feature that the rectangular details are attached to. any or all of those could cause shell failures.
when I have shell failures I try to dissect the model and see what features will allow me to shell to isolate the ones that are causing the shell to fail.
I'd start by just placing the shell higher up in the model and slowly move it down. start by trying to shell only the basic shape and slowly start adding features to the shell to see what works.
I took the parasolid and cut away the features I thought were causing the shell problem. you can see that the base model does shell. so the problem was in those other features.
i'd want to know what the part is being used for. how will it be made? for plastic or metal, you can't make the part if those smaller rectangles are shelled anyway so you wouldn't shell them. you'd shell the part like I did and then add them after the shell.
sometimes, the shell just won't work like you want it to. I've had to shell my part, add my other features that I still want shelled, and then use surfaces to cut away material to maintain constant wall. when I've done that, i can easily see why the shell failed because when I start offesetting surfaces you can see what surfaces self intersect and that's almost always where the problem is.
Hello Muhammad,.. personally, I'd suggest you move/reorder Loft3 up under Loft1,... then, Shell (you do not say what thickness?)..
..or, you could also just offset the outersurfaces,.. and at the end, cut with surface for the shell.
btw, Loft3, the second sketch is not present, so you'd need to fix that.. it's because you do not have VOR (verification on rebuild On)
Retrieving data ...