From: Matadem
Good day
Moving along the tutorials I got kind of stuck where I could blend from one side but not the other.
One side was done with Blend the other with the sweep but I cannot understand why one side would not blend.
On the lower side the fillet does not go thru complete I am quite sure I am dong something wrong here.
Or maybe it is because I do not have what is seems to have the cutline as in the tutorial? pls advise.
http://k4icy.50webs.com/tutorials/tray_21_blend-bottom.jpg
http://moi3d.com/forum/index.php?webtag=MOI&msg=4673.1
Thank you!
Attachments:
Showerhead tutorial blendfillet issue.3dm
Image Attachments:
blendissue.png
Filletissue.png
From: Michael Gibson
Hi Matadem, if you zoom in more closely to the area you indicate you can see the the surface there is messy and bunched up on itself:
That type of shape where it's very tightly curved in a small area is bad for filleting. Filleting works by generating intersections between offset surfaces and when an offset distance is larger than the radius of curvature it will be messy and bunched up like on itself like this:
Taking a step back, the source of the problem is there is a lot of slanting/shearing happening on this surface:
To get a nicely formed tube shape you want the cross-section to be perpendicular to the path not slanting across the path like you've got here.
I'd probably try making that with a one-rail sweep instead of with a 2 rail sweep. It's easier for one rail sweep to generate a regular tube shape since it's moving a profile along just one path instead of sliding it between 2 paths where shearing can then occur.
- Michael
Image Attachments:
matadem_fillet1.jpg
matadem_fillet2.jpg
matadem_fillet3.jpg
matadem_fillet4.jpg
From: Matadem
Got it!