Hello!

How you guys doing?

So I have been having this issue that, when I extrude, it creates these lines, usually created from drawing and ticking "MAKE CORNER POINT"



Then I have been adding points side by side to these corner points to maintain the original lines and deleting the specific CORNER POINT so when I extrude, there is no line like that, so this way I can fillet/chamfer so these lines doesnt cross each other breaking the model.

Is there like, any specific faster way to do this without having to delete these edges? Or maybe there is a workaround so I can fillet/chamfer without any issues?

Keep getting 'Calculation Failed', HELP!

Hi,

There is a script named Seamless.
You select your profile before extrude and launch this script.



It avoid corner point which can be replaced by a soft point.



There is another way, with the Rebuild function (hidden function)



Have fun !

Oh wow!

Thank you so much! But how can I get this script? How to execute both seamless/rebuild script?

Hi DrBombs, it's normal to get those edges, every segment in your starting curve will extrude out to a face and the edges that you show there are where the faces are joined to each other.

To get rid of them would mean controlling the source curves to only have one segment instead of being multiple segments. If your curves are smooth you can use the Rebuild command (type the Tab key then type Rebuild and push enter) to fit a single segment across a set of smoothly touching pieces or actually a kind of sneaky trick is you can export the curve to SAT format and then re-import it. That will have a side effect of fusing smooth segments together.

re:
> Keep getting 'Calculation Failed', HELP!

It's hard to help just looking at screenshots, please post the .3dm model file that you're having trouble with and then it will be possible to help you.

- Michael

Michael,

Thanks for your answer, I am attaching the .3dm on this message!

Hi DrBombs, thanks for posting your .3dm model file.

I took a look at this curve in it:



I tested extruding it and filleting it:



I closely examined the partial fillet results and I could see there are some small fillet fragments in these 2 areas here:



Here is a closer look at the top one:



So why are there small fragments in those 2 spots? The reason is that those are the only 2 spots
where the connecting curves you made are not fully smooth to the adjacent segments.

If you zoom in to the top one you can see that it's not smooth here:





Filleting does not like it if you have 2 surfaces that come close to being smooth to each other but
are actually slightly creased. For filleting you want to have either everything fully smooth or fully
sharp and not something halfway in between. That's because at places where surfaces meet up
at a crease the fillet surfaces have to be extended and intersected with each other and that's one
of the most complex areas of filleting.

The easiest way to fix it is to actually do less work and don't put in any of the small connector pieces at all.

Instead let the filleter round off those at the same time it is filleting everything else.
That's far more reliable because the filleter will be able to make corner juncture patches where
fillet pieces are meeting up and won't have to do extensions and intersections.

So for example with this shape it's easiest to set it up like this with all sharp corners (.3dm attached) :

Then extrusion and filleting of this type of structure will be much more reliable:







The reason why is that it allows these juncture patches to be formed:



When you manually put in all the junctures in your base curves, it's a little different structurally. You're making
it so fillets have to be built around those pieces instead of being able to place them in itself.

There can be other situations where it's good to kind of pre-fillet curves but it's more for situations with
more complex surface arrangements, but for filleting extruded pieces with just flat end caps it should be
best to not pre fillet them and allow the filleter to do it.

Hope that helps!

- Michael