Full Version: Considering buying MOI to do this

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Why this corner is so distorted ?
Does exist a rational reason of that ?
When a form is not "natural" it's normal that you obtain such difficulties! :)
Make simple and harmonious :)

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>Why this corner is so distorted ?

I am not sure what do you mean with distorted. It is a poly-surface (filleted cube G1) and then intersected lines.

>Does exist a rational reason of that ?
I guess the reason why 'this' exist it is cause I exist. Which is the same reason why things (not talking about nature)
have a shape, someone existed. This is not a challenging answer, I actually wonderer why this shape exist.

>When a form is not "natural" it's normal that you obtain such difficulties! :)

Can you clarify what should be 'natural' . Again you are challenging my perspectives (which is good). There are thousands cars
I can see from my window now. Do you believe they are 'natural' ? Or they are more logical for a cad software than a cube with radius ?

I apologize if this sounds too much. The truth I am frustrated. I am wondering how is possible I saw so many crazy shapes on CAD software.
I ve seen an AUDI R8 in CAD, Its been weeks making a cube with G1 filleted edges and grooves :(

Thanks a lot for participating. I am looking forward for suggestions :)

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Hi Bruno, well a couple other things you could try to smooth out the discontinuity would be to trim away a small slice around it and use Construct > Blend to build a blend surface through it. Also Rhino's MatchSrf command could be worth a try, if all the other shaping is looking good other than those discontinuities.

- Michael

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Maybe something like that.?




The radii on the sidewalls are all equal. 8 Profiles 2 rails. In the corners the radius will be stretched. If you want avoid that the radius/diameter has to be big enough that he can fit to the distance of the rails in this area. But think about what happens then - the path of the grooves will moves up/down there.

Have a nice day
Karsten
p.s.: The curvature of isolines shows a little swinging

Attachments:
test2.3dm

Image Attachments:
crvtr.png  test2.png 

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And that is possible with G3 fillets for the cube and a curve rebuild for the rails.

Image Attachments:
possible.png 

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< distorted.

Just that following materials and sizes used any curves can't be realized! ;)
So more fluent more easy...



Your cube is for a jewel ?

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LOL :)

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Technic of Gaudi can't be applied here ?

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I will go for your technique without looking the discontinuity. If MOI and Modo can translate good I might correct the ''problem'' through erasing some polygons or edges.

I will also try the technique of Karsten with the G3 cube. I am curious to see how will be the result.

Thanks so much for your time again.

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Karsten thanks so much. Today I am going to try with the G3 cube. I remember you said you used two rails and one profile in an oldest post.

Now you did a new technique I think. With 8 profile and 2 rials and rebuilding.

I will come back with results of your first attempt ( since that rebuilding and making 8 profiles for each groove...will be an experiment that will need more time).

Thanks so much!

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Furniture ;)

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Mmm I think Gaudi used that technique in order to calculate the structure tension-forces of Sagrada Familia.

I love that place. Thanks! I will apply it to my cube

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Hi Karsten,
How did you do the curvature anylsis it looks like it’s in Moi.
Is there a script for it ?
Cheers
Barry

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Hello Barry,

there is a script called CCC (calculate curves curvature) and a curvature node with the psychodellic colors. The disadvantage is the node throws 255 new styles to the file. For each color of the rainbow one ;-) You will find it under Infos in the extensions. You can switch also to a radius mode, only useful when the curve has no straight segments. With scale factor 1 the lines shows you the center of the local radius. Min and Max radius is also evaluated. Useful for e.g. sweeps with a circle as profile. then you can compare local radius of the curve with the profile radius and know if the resulting surface will be squeezed.
Have a lot of fun with it, it was a lot of work;-)

Karsten

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Hi Karsten,
thanks for the info will take a look.
Cheers
Barry

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Curvature analysis is an objective judgment of the quality, sometimes it's hard to see the bullshit I have produced. But then there is no space left for a discussion about the result. And then - again!

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Hi Karsten,
found the node, tried it and found a practical use for it.
The max and minimum radii function is useful when machining a profile and the minimum cutter diameter needs to be known.
So keep up the good work with creating nodes I enjoy the challenge of using them for solving practical problems.
Cheers
Barry

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<< there is a script called CCC (calculate curves curvature) and a curvature node with the psychodellic colors.curves curvature) and a curvature node with the psychodellic colors.

Sorry where is it ?

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Hello Pilou,
http://moi3d.com/forum/index.php?webtag=MOI&msg=6634.14 The script without coloring and the node is in the extensions under infos. Insert the node, connect a curve to it and the out to an output. Press run - that's it.

Have a nice evening
Karsten

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@ Karsten
Ok I answer on the other thread about curvature info!

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