One source of unsupported geometry can be connected with your MSA (Minimum Support Angle) I use 50 degrees. Any surface with a slope less then a 50 degree angle receives supports. This parameter can be adjusted when you click the support generation icon in Lightyear1.x I have seen colegeus use a MSA as low as 32 degrees.
Hope this helps.
Brad Van Dike
Yazaki North America
734.983.1704
bvandike@yazaki-na.com
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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