Majik Tutorial: Transitioned Recessed Surface  1-20  21-39

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 From:  Mike K4ICY (MAJIKMIKE)
4880.1 
In this tutorial, I wish to go over the basics of what could be called a transitioned recessed surface,
or in other words - a cool looking indent on a surface that seems to come from nowhere.

You can't exactly use a Fillet to to make these rounded features, so the Blend command comes to the rescue.




Take note of these different elements:




Each of these elements can be straight or curved, as long as the basic elements are there.
(Excuse my lack of proper terminology or poor descriptions)

1) The "Threshold" curve is the exact area where the recessed surface becomes one with the main surface.
2) The "Outside" curve is the point at which the indent and the main surface meet. It should be a loop.
3) The "Inside" curve is the point at which you are now at the indented surface. It should be a loop.
4) The "Diversional" curve is used to make a reference surface by which to "peel" away the indented surface. It does not have to be a line.


Bear with me, you'll see what I'm talking about....


I need to Trim or Boolean Difference the Outside curve from the main surface:





You need to include the Threshold curve in the cut to form a complete loop.

Here is where you make the indent's surface:




The "Diversional Curve" needs to be extruded into a surface, so that a Blend command can be used on a tangent to form the "peeled away" indented surface.
It doesn't have to be a flat surface, you can use a Networked surface.
Make sure that the Blend to be produced envelopes (larger than) the entire loop area of the Inside curve to make the indent surface.

Here you make the blend:




The Blend is made from the tangent edges of both the main surface at the threshold point and the edge of the "Diversional" reference edge.
Note: This new "peeled away" surface can be either above or below the main surface - as long as it connects smoothly at the Threshold point.

Now take the Inside curve loop and Boolean Intersect that with the "peeled away" blend surface:



Delete the outer piece left over.

Here's where the magic happens:




Perform a Blend command between the edge curves of the main surface and the outer edge of the indent surface.


Thought it would be easy, eh?

The Blend command does a good job mating two surface edges, but the path of the edge side curves in the Blend are often wavy.
Now there is an overlap and a gap at this point of the Threshold area.




I'm going to cut out the bad stuff and make a new edge by which to blend the leftover part of the Threshold point to this new edge.
An Arc will work.




I just do a Boolean Difference to remove a small chunk of this uneven surface.




You'll have to add Trim points to the edge curves at these places:




Blend these smaller edges into a new surface:




Now the gap should be gone.

Now Join all these surfaces, and you should now have an interesting transitioned recess area.




Here is an example of what can be done on a curved surface:




This dryer model has transitioned recess indents on the side panels:
In a real life application, these areas would provide increased structural rigidity to the sheet metal panel, as well as a stylistic detail.






Here is a control knob that would be incorporated into the dryer model:






The knob body has a round shape that contains a pointer region, while a grip ridge sits on top that has a flat area for which to put type.
These features elegantly flow into each other.


I hope this tutorial comes in handy!
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 From:  Frenchy Pilou (PILOU)
4880.2 
Perfect for new Coca Cola bottle!
---
Pilou
Is beautiful that please without concept!
My Gallery
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 From:  Michael Gibson
4880.3 In reply to 4880.1 
Another nice tutorial to add to your collection Mike!

- Michael
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 From:  ed (EDDYF)
4880.4 
Thanks for sharing that Mike. Those kind of indents or scallops are very common in a lot of objects. Blend is your friend :)

Ed
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 From:  Mike K4ICY (MAJIKMIKE)
4880.5 In reply to 4880.3 
Thanks!

> to add to your collection
Yes, it's beginning to become a veritable candy store of MoI goodness. :-)

Here's something shiny I threw together to test the method out... It's just a panel with a vent... maybe I should design the whole vehicle. ;-)

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 From:  stevecim
4880.6 In reply to 4880.5 
just had a look at your Tutorial page, can't wait to work through every one of them :)

Cheers, Steve
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 From:  Mike K4ICY (MAJIKMIKE)
4880.7 In reply to 4880.6 
Cool!

Feel free to ask questions and give me pointers when you find them. :-)

If you end up with a nice render of any tutorial reproduction, I'll consider adding it next to their associated entry on my page.
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 From:  kevjon
4880.8 
Nice tutorial

Lets hope we get blending options with network surfaces in V3, it would make it much easier to control the shape of the blend.
~Kevin~
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 From:  Mike K4ICY (MAJIKMIKE)
4880.9 In reply to 4880.8 
I agree.

I'd also very, very, very much enjoy the ability to blend from three or four separate surface edges simultaneously, all with individual tangent control options. =-)

Oooooh... that would be niiice.
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 From:  Rich_Art
4880.10 
Thanks for all the good info and examples...

Peace,
Rich_Art. :-)

| C4DLounge.eu | Our Dutch/Belgium C4D forum. |
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 From:  Mauro (M-DYNAMICS)
4880.11 
Thanks Mike for this" sophisticated " stuff
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 From:  klickoff (RIKO)
4880.12 
Magnificent lesson. Thanks Magic! What do I do not correctly? The smooth surface is impossible...


My love MoI!!!
Attachments:

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 From:  Mike K4ICY (MAJIKMIKE)
4880.13 In reply to 4880.12 


Klickoff, I was able to re-Blend that area and got this smooth result. (shown)

The broad line you made at the bottom needs to be Extruded and made into a planar or curved surface, as long as it kind of follows the general curvature or at the least the direction of the surface you want.
I performed a Blend by selecting the actual curves on the edges of the surfaces. (shown highlighted)
The Blend made the surface by following the tangent from the surface edges.

However, I needed to Blend from the whole length of the edge at the top.

Here:

I did a "Merge" command on the whole length to get one solid edge line by which to Blend from.
It's very smooth.

Are you able to try this?
Let me know, so I can see what's happening.



http://www.mediafire.com/?3x2zag0yqtd8pmz
Look at your file with the blend.

EDITED: 2 Feb 2012 by MAJIKMIKE

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 From:  klickoff (RIKO)
4880.14 In reply to 4880.13 
Thank you very much, Mike.Yes, i am happy.)))
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 From:  Mike K4ICY (MAJIKMIKE)
4880.15 
Another diddy...

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 From:  ed (EDDYF)
4880.16 In reply to 4880.15 
Awesome MM. UFO? Hubcap off an AMC Pacer? Kneecap off CP3O?

Ed
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 From:  Mike K4ICY (MAJIKMIKE)
4880.17 In reply to 4880.16 
All of the above... it depends on your perspective ;-)
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 From:  Michael Gibson
4880.18 In reply to 4880.17 
Could make a good bundt cake mold too! :) Haven't had any bundt cake for quite a while!

- Michael
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 From:  Mike K4ICY (MAJIKMIKE)
4880.19 In reply to 4880.18 
Mmm, reminds me of my late grandmother's Grecian orange cake.



Just soaked to the core with orangy-syrupy-goodness. =-)


Now how much would a cake recipe be worth if the bundt cake pan was custom modeled in MoI and CNC'ed?
Okay... I'm getting hungry.
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 From:  Andrei Samardac
4880.20 
One of our man from Russian MOI 3D community made today this video)
May be it will be interesting for russian-speaking people)


-----------------------------------------
Portfolio: www.samardac.tumblr.com
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