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Full Version: Ring with anti skid break

Show messages:  1-11  12-29

From: BurrMan
18 Feb 2023   [#12] In reply to [#11]
Oooooo……

Ahhhhh…….
From: Lara (MALA)
18 Feb 2023   [#13]
I agree with Burr Man - ahhh oooh - I try it out this afternoon. THANK YOU!
From: Lara (MALA)
19 Feb 2023   [#14]
A start. Yes. Pretty cool. The only thing that's not good yet are the sharp, top edges running out to the cylinder. They should be softer. However, the filleting stops at 1.5 mm.


Image Attachments:
a beginning.png 


Message 10987.15 was deleted


From: Lara (MALA)
20 Feb 2023   [#16]
This is "exactly" the shape of my brake. However, the shape is not yet perfect. I have done a two rail sweep. Is it the edges of the contour line? Because it is ideal from the side, but not from above. Do I have to change that?





Attachments:
RUTSCHHEMMER Var II__________MOI FORUM OUTPUT.3dm

Image Attachments:
CORPO.png  WIRE.png 


From: Michael Gibson
20 Feb 2023   [#17] In reply to [#16]
Hi Mala, I'm sorry I'm not understanding what you want to have it do different than what you currently have.

One thing though is if you edit the middle curve so that it's centered you can use it as a scaling rail to control the height.

Like this:




- Michael

Attachments:
Mala_brake.3dm

Image Attachments:
mala_ring15.jpg  mala_ring16.jpg 


From: Barry-H
20 Feb 2023   [#18] In reply to [#16]
Hi,
try the attached network solution it gets rid of the pinching on the ends.
Cheers
Barry

Attachments:
Network.3dm


From: Lara (MALA)
21 Feb 2023   [#19]
Hi Berry,
your model is very near to the goal I try to reach. Thanks a lot!!!
I need to reshape the profiles rounder what I did now. And I must reshape the height line for sweeping.
I fail after so many tries with reshaping the height line. Why is it not possible to round the ends of the heigtht line with filleting? Or do I have to reconstruct the height line in an other way?

best, Mala


Attachments:
Var IIII_.3dm

Image Attachments:
round reshape the ends.png 


From: Lara (MALA)
21 Feb 2023   [#20]
Shit - I guess I got it. I tried so many times the arc tool with two deffinition points...and failed always. Now it worked. And I was able to make a relatively proper heightline. BUT - not fully perfect: At the end of the banana there is a little irritation...but it should work. Best, thx, Mala








Image Attachments:
got it point.png  got it spline.png  got it split.png 


From: Lara (MALA)
21 Feb 2023   [#21]
...hmmm´, like thought. I can flow deform the banana. But the filleting at the ring segment: calculation fails. No idea how to construct the banana better than how it is now?



Image Attachments:
Got it Calculation FAILED.png 


From: Lara (MALA)
21 Feb 2023   [#22]
Now I made an extrusion to avoid a conflict when booling with the ring. I guess it is not state of the art. But in 1 hour I need the ring for 3d SLA-print. Later I fill rubber into the 3d model...








Image Attachments:
GOT IT A.png  GOT IT B.png  GOT IT C.png 


From: Lara (MALA)
23 Feb 2023   [#23]
I cannot do filetting with the "banana". Where is my mistake?
In the 3d file the banana and the ring are not booled or trimmed (not sure which operation is here state of the art - I do not yet exactly the difference)
But for filleting I cuted both objects and connected them.


Attachments:
filleting of banana fails.3dm

Image Attachments:
filetting fails.png 


From: Michael Gibson
23 Feb 2023   [#24] In reply to [#23]
Hi Mala,

re:
> booled or trimmed (not sure which operation is here state of the art - I do not yet exactly the difference)

If you have a solid then booleans are good, the booleans cut pieces up and then decide which pieces to keep based on which solid volume they are contained inside of.

If you have open surfaces then that's usually when you should use Trim - Trim doesn't automatically decide which pieces to remove, you have to pick the pieces you want to get rid of.

On your model I'm not sure why Filleting doesn't work but if you break the object apart into individual surfaces you can use surface/surface filleting on it by selecting 2 surfaces at a time instead of edges.

I can help you do that, what radius do you want?

- Michael
From: Lara (MALA)
23 Feb 2023   [#25]
I would like to understand and learn it myself. And it is still in progress. So it does not make so much sense giving the diameter of filleting. One learning I have in the meantime is trim vs. bool. Here in the attached file I put the banana to the cylinder first with the Trim operation and then the Bool: Union joined together. Filleting with the separated surfaces did not work.

Attachments:
filleting of banana fails 2.3dm


From: Michael Gibson
23 Feb 2023   [#26] In reply to [#25]
Hi Mala,

re:
> Filleting with the separated surfaces did not work.

It's working for me over here, here is what it looks like:



- Michael
From: Phiro
23 Feb 2023   [#27]
A way to find the problem of fileting here is perhaps a problem in your banana.
If you use SelectNakededges on the banana, you will see a problem with double edges zone.
Perhaps, a problem in the banana's creation ?
From: Phiro
23 Feb 2023   [#28]
Test this one with a reconstruction using loft and blend creation

Attachments:
filleting of banana fails 2_1.3dm


From: Michael Gibson
23 Feb 2023   [#29] In reply to [#27]
Yup Phiro is right there is a naked edge on your base model here:


- Michael

Image Attachments:
mala_ring17.jpg 


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