how to close of a tube

[Master chief]

OK I'm using a 4 point tube to try and make a antenna looking device , and why the main part looks good the end points which do get quite small and shape looking are getting weird artifacts , is there a way to correctly close off a tube?

 

 

 

 

heres a pic

[robcat2075]

Show a shaded wire frame and it will be easier to see what you have going on there.

 

is there a way to correctly close off a tube?

 

typically you extrude one more ring off the end of a tube and then scale those down to about 1% of their original size. 0% is too small.

[Master chief]

ok cant use a scaled down item as a hope to use a boolean cutter to show damage ,

 

here is a wire frame

[heyvern]

Boolean cutter shapes must be closed.

 

You only have a 4 point lathe or tube. Those are EASY to close. Select the end cross section spline. Hit "E" for extrude. Move that spline out away from the rest of the tube (if it didn't do this automatically when extruding) Not hit delete to remove the extruded spline but leave the points.. Now connect two of the points in the middle. Delete that point and the other two points. You end up with two 3 point patches on the end. Then you can scale this down and it will work as a boolean cutter shape. You can do this at both ends.

 

Another way to close a 4 point lathed or extruded tube is to extrude an extra section. That section is made of 4 points but is not a legal patch because the spline around it is a continguous spline. You need to brake one side of that cross section spline and recconect with a new spline that has 4 points, two dangling ends. Connect that spline to each end point from where you broke the cross section making sure that you don't connect the END cps of the new spline but the inside two points. this creates a legal patch because there is that non-contiugous spline on one side of that end extrusion.

 

-vern