Closing opening problem

 From: Brian (BWTR) 9 Feb 2008  (1 of 8)
 A wierd one. For some reason, going back through several approaches, I can not get this opening to be sealed/closed Helppppp!! EDITED: 31 Dec 2008 by BWTR

 From: Michael Gibson 9 Feb 2008  (2 of 8)
 1359.2 In reply to 1359.1 Hi Brian, instead of trying to construct a cap directly in place on that 3D curve, it is a lot easier to create a more simple capped end and use a boolean to cut it and that keeps everything as a solid. So for example, instead of creating a wavy hole at the end, construct your object to come out to a simple flat cap like this: Now to get your curved end, draw a curve in the side view: And then use Boolean difference to cut the solid with the curve. Here I have dragged the piece apart slightly: Just delete the piece you don't need. Often times it can be a lot easier to build a more simple version of your shape that is extended somewhat, then cut it back to get your final result. It can be a lot more difficult to try and work directly off of a more complex boundary hole. There is another approach you could use - you happen to already have 2 edges in that opening, so you could select both of them and then use Construct / Loft to make a surface through them. But that surface will be collapsed down to a single point at the top and bottom, it will tend to cause problems later on with fillets and such. The simple cut that I showed above is far more fillet friendly. Hope this helps! - Michael Attachments:

 From: Brian (BWTR) 9 Feb 2008  (3 of 8)
 1359.3 In reply to 1359.2 Thanks Michael. Even so, I am surprised that I could not find a closing solution as it is? One of those odd ones I guess.

 From: Michael Gibson 9 Feb 2008  (4 of 8)
 1359.4 In reply to 1359.3 Hi Brian, > Even so, I am surprised that I could not find a closing solution as it is? There is actually a solution as it is - you can select the 2 edge curves and then make a Loft between them. But like I mentioned previously, that will create a surface that is collapsed / pinched down to a point at either end of it which will cause problems later on. That's why the other method is better. It may be possible for me to add a tool in the future to fill in a hole like this where an extrusion will fit it. That takes quite a bit of extra analysis in the hole filler code - right now it only knows how to handle a flat planar hole. - Michael

 From: Brian (BWTR) 9 Feb 2008  (5 of 8)
 1359.5 In reply to 1359.4 Michael in those two posts of yours I see maybe where some of the previous filleting problems I have encountered could have arrisen from. I think there is a "better to do this than that" set of "basic" rules item here but I dont know how to put in words myself? Here is the end rsult of the fly spray can which was good fun--except for that puzzle!-- EDITED: 31 Dec 2008 by BWTR