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"Thank you Michael!! You have a point. I used graft for the curves instead thats why it didnt work :)"

"graft A of vec 2 point. have a look at the primer to understand how lists work."

"Hi again, Do you know why the definition does not apply to multiple polygons. It is giving me weird extrusions and I can suspect where the problem is.\I have attached the definition to If you want to have a look"

"its 0.5 Thank you Michael :)"

"Mine comes up like that?Why? how much the t value should be?"

"off the top of my head. "

":) Thank you Michael, I have done it thanks to your help :). Its still at basic stage but im getting there :)"

"or use the rhino command, rebuild on your trimmed surface."

"http://formularch.blogspot.com/2012/05/gh-graph-tower.html look at the part of this definition saying "slab rotation" "

":) Thank you for the tips Victor :) i really didnt know the trimming part :) it works fine now "

"1, You might have worked with an trimmed surface. If you read about Nurbs surface and how trim surface is defined, you will know that the UV curves are not changed after trimming operation. Try use simple lofted surface for this. 2. The…"

"Point 2) "

"Yes of course Point 1):TThe UV division is outside the boundary of the given surface(yellow outline). The blue part represents the part that will be lofted and I dont want"