Thanks to Michael's help was able to fillet this up to .25 on the top and .2 on the back - which is better than hoped - was going for .125 but .25 is even better.

Hi Neil, I mean the ending directions aren't actually tangent there. Just like this example isn't smooth here:



In this example here it's much more obvious that there is a sharp corner. In your cases it's not so obvious because it's only like 3 degrees off from being smooth. That doesn't sound like much but for filleting it can be bad to have shallow corners like that. The reason why is that different fillet pieces will only naturally match each other at smooth spots. At spots that aren't smooth they have to be extended and intersected or have a corner patch made for them. But when it's a shallow angle it tends to make situations like the corner junctures being really small slivery bits which don't behave so well.

Sounds like it isn't a big problem for your case here but the upshot is that it's good for filleting to make your original curve pieces fully tangent to each other in spots like that and not just pretty close to being tangent.

- Michael

Thanks for explaining. Will work on that.

Would it be possible, or useful, to have a script which would examine the end tangents of end connected curves, and report if the tangents were equal or not?
...Filtering tangents which are greater, or lesser, than a tolerance...?

- Brian

Hi Brian, yes that would definitely be useful and I do expect to have something for that built in at some point here when I can figure out a good place to put it.

- Michael

Here are a few renderings of the model - really like how the contours turned out.

Looking good Neil!

- Michael

Yes it's really good !

Here is a heel, neck transition - it is nice and smooth on the left side - so I mirrored that side - but the right side has a seam - how to fix this?

Thanks, N

Hi Neil, it helps a lot if you can post the 3DM model file with the geometry in it instead of only a screenshot.

That allows for a lot more detailed analysis of what's going on.

- Michael

Lol - sorry Michael - the file is attached now.

Hi Neil, there are 3 surfaces in that file and they look like this:


So that's clearly not a result of mirroring, there aren't separate pieces across a center mirror line like a mirror operation would create.

Maybe I'm not understanding what you mirrored though, was it the curves before building the surfaces? If you can post a file that is ready to repeat the mirror that you did that would help.

- Michael

Yes I apparently had several drawings combined there - which is a bad habit I need to break - constantly redrawing and not deleting - anyway - started over and used the aligning tools as Ferguson suggested and it turned out great. I'll be aligning everything from now on. :)

That one is looking good Neil!

- Michael

Hi
Your construction lines are curious and non symetrycal.
I don't understand why you want to do something complicated for this part of the model.
See also your curve Transition 2

Thanks for pointing out all my mistakes. This one is simpler and more symmetrical. I used MoI 3 and only the basic commands.

it's better but there's still a little problem with that curve junction.

Thanks. Maybe this is better.

entire frame curve is not straight (0,0007)
see my screen shot
but perhaps it's that you want

and the part is still not symmetrical