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[3ds max] Ofset cut

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Voxelus polycounter lvl 5

Hey guys! :)

Here's a little trick how to boolean chamfers in 3ds Max


It's aimed  for Proboolean + Dynamesh Workflow

And totally not suited for Sub-D modeling


Let's take a simple geometry formed by a sphere and cylinder

and make a chamfer at their intersection:

1 Select edges

To form a chamfer you need to create a spline as a base

Add Edit poly modifier to your object and select edges which are you going to chamfer

2 Create Spline

Right click => Create Shape

3 Configure Spline

In the spline options set Enable Rendering in Viewport ON

Then set the thickness of the spline

The spline thickness must be in 1,3 times bigger than chamfer you want to get

Set numbers of sides to 3.

Set Angle so that the line was like in the picture below:

4 Clean Spline

At this moment the spline looks crooked and irregular let's fix it!

At first add Normalize Spline modifier

The Segment length parameter specifies the distance at which the spline points are located apart

The smaller the value, the greater the number of points

The Normalize Spline modifier work little wrong

But it easy to fix:

Add Edit Spline modifier on top of Normalize Spline, select all vertexes and change them to Corner

Now the spline looks much better : )

5 Preparing for chamfer

Add Edit poly modifier, seleсt the edge loop from the outer part of the spline and delete it

Then select the ring of edges on the inner part and divide them in half by the Connect

On the Ribbon panel in the polydraw tab switch Draw On to Draw On: Surface

Click Pick button and select cylinder:

Use conform brush to project the Future Chamfer to  the cylinder's surface

6 Making chamfer

Use Chamfer

The chamfer size can be infinitely large but it should not be smaller than the ring of polygons around it

Do not use Quad chamfer use Standard chamfer


Select all vertexes (ctrl+A) and add weld with very little value

It must weld  vertexes overlapped after chamfer


7 Add Push

Very important step, without it boolean will not work correctly

set a very small negative value


8 Boolean Chamfer

Use ProBoolean  in subtraction mode, subtract chamfer from cylinder

if you had such an error:

DO NOT PANIC!

In the Boolean operation stack select chamfer-shape

Select Push modifier


And start to decreasing the Push Value until boolean start work correctly



does not look too nice, eah?

not a problem!

Increase a Cylinder and sphere Numbers of sides

Add the Turbosmooth modifier on top of chamfer


And this is it! :)




Replies

  • Axi5
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    Axi5 interpolator
    Your article isn't finished yet, but I'm getting the gist through the images. That's pretty damn awesome, and I'm going to try replicate this in Maya.
  • Voxelus
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    Voxelus polycounter lvl 5
    Axi5 said:
    Your article isn't finished yet, but I'm getting the gist through the images. That's pretty damn awesome, and I'm going to try replicate this in Maya.
    Hi Axi5! 
    I'm glad that you liked my technique )

    I am 100% sure that you will be able to replicate this in Maya.

    But the more interesting question is.
    Сan you write a script that will chamfer/boolean automatically and parametrically?

  • Axi5
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    Axi5 interpolator
    Voxelus said:
    Axi5 said:
    Your article isn't finished yet, but I'm getting the gist through the images. That's pretty damn awesome, and I'm going to try replicate this in Maya.
    Hi Axi5! 
    I'm glad that you liked my technique )

    I am 100% sure that you will be able to replicate this in Maya.

    But the more interesting question is.
    Сan you write a script that will chamfer/boolean automatically and parametrically?

    Hi Voxelus,

    I'm pretty sure Hard Mesh for Maya will do something similar to this. I tried to do something similar myself, a few months ago, by searching for the intersections between the bools and unfortunately turned up empty handed. I didn't try very hard though, I'll give it another go sometime.

    Cheers :D
  • LaurentiuN
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    LaurentiuN polycounter
    Nice hacks you got in there, but in production env that would be to slow, and the final result is not that good, shading errors, maybe that can be corected. Here is something like what you made but in 1 min....nurbs and converted to mesh. Fusion Power :)).

  • Voxelus
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    Voxelus polycounter lvl 5
    s1dK said:
    Nice hacks you got in there, but in production env that would be to slow, and the final result is not that good, shading errors, maybe that can be corected. Here is something like what you made but in 1 min....nurbs and converted to mesh. Fusion Power :)).
    Yeah. It seems that i completely agree with you, now.
    Guy in the next topic changed everything
  • LaurentiuN
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    LaurentiuN polycounter
    Voxelus said:
    s1dK said:
    Nice hacks you got in there, but in production env that would be to slow, and the final result is not that good, shading errors, maybe that can be corected. Here is something like what you made but in 1 min....nurbs and converted to mesh. Fusion Power :)).
    Yeah. It seems that i completely agree with you, now.
    Guy in the next topic changed everything
    Yeah he did, lets hope we get something nice from it:)
  • gkatn
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    gkatn null
    Very good tutorial.  But it does not work well me. Excuse me, can you show me by video?  I'm sorry if it's hard.
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