I have been using rhino 6 for a long time but I didn’t see any fourth point before when I make a triangular surface. After making surface I use the command PointsOn and fourth corner appears like in the picture.
Are there any settings for that?
Hi, you must be using this command “Surface from 3 or 4 corner points”.An alternative is to use the UnTrim command and then move one of the control points over another to merge them, that way you will get what you are looking for. “if you don’t undo the clipping it doesn’t work”
Another identical way, the difference is to omit the SrfPt command and use plane then activate your control points and move it directly over the other point. view image
Thanks again for the reply that worked but I had one more problem like this while modeling.
I created a surface then trimmed it and it had surface points on way too far. Then I used the command ShrinkTrimmedSrf it took points closer but still not on the surface.
Im so new to this situation. Still couldn’t figure out why are these happening.
Yes, it is correct both ShrinkTrimmedSrf and Shrink Trimmed SrfT Edge shrink sitrimmed surfaces and rebuild the control point structure. otherwise you must upload an example for someone on the forum to review.
Hello - ShrinkTrimmedSrf leaves a small - ~1%, if I remember correctly, outside the trim curve when the trim curve does not correspond to a surface isocurve. This is because trims that are not on isocurves are approximate - subject to the document absolute tolerance. The ides is to avoid having the trim curve fall outside the surface by some near tolerance amount - that is bad and should be avoided. ShrinkTrimmedSrfToEdge will attempt to shrink completely, but on non-isocurves trims runs the risk described…
all these problems started happening 2 days ago. I didn’t have all three problems I mentioned in here before. I’m not used to work like this. I do everything suggested here while modeling but it makes me so slow.
Are there any ways to prevent making trimmed surfaces?