...you go through one thing...next challenges are waiting surely...
BlendCap works. The boolean operation works for the point but not for the 3...hmmm´...why?

Hi Mala,

re:
> The boolean operation works for the point but not for the 3...hmmm´...why?

A couple of different things - one is that your base object is not a solid so you will probably need to use Edit > Trim to cut it instead of booleans. Booleans are based on determining which pieces to keep and which to discard based on what solid volume they are contained inside of. When your base object is not a solid it will have difficulty doing that job.

Then also looking at the underside of your object, it's not good to boolean objects that are barely skimming over the same surface area, for a boolean it's better for objects to push through each other by some amount instead of barely skimming each other:



- Michael

I believe your 2 objects are false!
Because we can't make a fillet after Boolean Union

I have drawn anything that works as aspected...
So redraw your objects!

PS Michael was more speedy than me! :)

A speedy method with your false objects will be in front view to trim them by a line near their base
Kill the bottom trimed volumes surfaces
(resize if you want in any direction)

Move them to surface start

Now all can work as aspected with the Flow method

Boolean result on the curvated target surface

Make the Fillets if necessary

This is not the intention...
That´s the middle and ring finger of a hand. But I need a blendcap and the fingers are still two fingers...
How can I do this goal?

I also tried a concept with two splines. They are closed splines. BlendCap says: I do need closed splines to do the job.

Hi Mala, you can put a fillet there as long as it's not overabout 0.17 radius:



If you need something that is kind of blobby and smooth to an irregular outline you may be better off building something like that with a Sub-D modeling program rather than a CAD program.

- Michael

Hi,
split finger curves in two then blend.
Cheers
Barry

For Blend something for have a surface(s) you must have yet some surface(s) to the curves selected!

Barry-H, could you show the steps to achieve that? I can't figure out what you are blending with what exactly

Maybe like this ;) Blend is a magic function!





1- 4 --> 3 Blend
2 - 3 Blend
will give also another different valid result
4 - 2 Blend ->3
1 - 3 Blend
etc...

Order is important following result wanted!

Hi DanC,
the finger shapes are extruded then the top edge of each finger are trimmed at the tips.
You can then blend one side of the finger to the other.
Hope this helps.
Barry

Ah, thank you both. So yes, more trims. I thought there was only one trim (at the visible split in the top surface), but you need one more. I was trying to cap a similar shape extrusion with these kind of concave parts to the shape and couldn't find an elegant solution as the BlendCap function is only successful with concave profiles to a certain degree. When you have something like this with the 'fingers' it just doesn't know what to do.

My Internet is down...so communication with cell phone...
I cannot solve it. I tried all your concepts. No success. If I split the two fingers, blendcap needs a closed spline. Which I normally have. The objekt info tells me so. But always this no-go message...hmmm'...

Pilou, can't follow your workflow...

That you maybe missed on the video is the line who "Trim" the perimeter...for have the 3 curves segments (1 2 4)

I do not understand trim the perimeter and how to do that.

Like this you trim the top perimeter edge!
(carreful to kill a possible curve against the perimeter edge! )
Kill of course the line after the trimming...if necessary
PS the vertical line is the Curve generator (made during the extrude ) so automatic trimming! :)

You can now make your Blends!

And now the splines are splitted And blendcap needs closed lines...hmmm'...