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The Basics of 3D design
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Tamsyn Michael  
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 More options Sep 26 2012, 5:47 am
From: Tamsyn Michael <tamsyn.j.mich...@gmail.com>
Date: Wed, 26 Sep 2012 19:17:36 +0930
Local: Wed, Sep 26 2012 5:47 am
Subject: The Basics of 3D design
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Argh, help.

So I have installed Blender, but have no idea where to start.  I have heard
that perhaps FreeCAD or TinkerCAD or something might be more in line with a
beginner?  Does anyone have any idea where I should begin?  What software?
Preferably something with step-by-step tutorials?

Thanks,

Tamsyn


 
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Steven Pickles  
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 More options Sep 26 2012, 7:30 am
From: Steven Pickles <thatpix...@gmail.com>
Date: Wed, 26 Sep 2012 20:59:59 +0930
Local: Wed, Sep 26 2012 7:29 am
Subject: Re: [HACK-ADL] The Basics of 3D design
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TinkerCAD has tutorials built in, I recommend it as a starting point.
Especially for making objects for printing.

Blender is pretty hardcore. I've learnt and forgot how to drive it numerous
times. I'm currently in the forgotten phase.

pix
On Sep 26, 2012 7:17 PM, "Tamsyn Michael" <tamsyn.j.mich...@gmail.com>
wrote:


 
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Andrew Helgeson  
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 More options Sep 26 2012, 9:12 am
From: Andrew Helgeson <cyberte...@gmail.com>
Date: Wed, 26 Sep 2012 22:41:56 +0930
Local: Wed, Sep 26 2012 9:11 am
Subject: Re: [HACK-ADL] The Basics of 3D design
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Yep, Blender has a steep learning curve!

If you've ever messed around with PovRay, openSCad makes sense, but you
really need a handle on CSG!

I was looking at the syntax, its "almost" like povray, the concepts are the
same, just the syntax is a bit different.

I've found if you can't draw what you're desighning on graph paper, you
WILL go nuts trying to draw it in a CAD program.

Besides you should make a token effort to get the ruler, pencil and rubber
out!

This is a real object, not a model for an animation!

;-)

Andrew

On 26/09/2012 9:00 PM, "Steven Pickles" <thatpix...@gmail.com> wrote:

TinkerCAD has tutorials built in, I recommend it as a starting point.
Especially for making objects for printing.

Blender is pretty hardcore. I've learnt and forgot how to drive it numerous
times. I'm currently in the forgotten phase.

pix

On Sep 26, 2012 7:17 PM, "Tamsyn Michael" <tamsyn.j.mich...@gmail.com>
wrote:


 
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Tamsyn Michael  
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 More options Sep 26 2012, 9:28 am
From: Tamsyn Michael <tamsyn.j.mich...@gmail.com>
Date: Wed, 26 Sep 2012 22:58:56 +0930
Local: Wed, Sep 26 2012 9:28 am
Subject: Re: [HACK-ADL] The Basics of 3D design
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Thanks guys.  I'm finding OpenSCAD much easier.  I'm currently reading this:
http://www.makerbot.com/tutorials/openscadmanipulate/

And have nearly finished making a glass based on the ANAT logo.
Here's my code for those interested:
union(){
rotate([0,270,0])linear_extrude(height=24) polygon( [
[0,0],[30,0],[30,5],[5,15],[30,15],[30,19],[0,19],[0,13],[21,4],[0,4]
] , [ [0,1,2,3,4,5,6,7,8,9,10] ]);}
difference(){
translate([-12, 10, 0]){cylinder(80,5,25);}
translate([-12, 10, 10]){cylinder(80,5,25);}


 
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Tamsyn Michael  
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 More options Sep 26 2012, 9:30 am
From: Tamsyn Michael <tamsyn.j.mich...@gmail.com>
Date: Wed, 26 Sep 2012 23:00:26 +0930
Local: Wed, Sep 26 2012 9:30 am
Subject: Re: [HACK-ADL] The Basics of 3D design
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Just have to work out how / where to move the cylinder and / or
difference command so that there isn't any of the N inside the glass.
:(

Oh, it's based on the ANAT logo:
http://www.anat.org.au/

On Wed, Sep 26, 2012 at 10:58 PM, Tamsyn Michael


 
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Andrew Helgeson  
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 More options Sep 26 2012, 10:01 am
From: Andrew Helgeson <cyberte...@gmail.com>
Date: Wed, 26 Sep 2012 23:31:18 +0930
Local: Wed, Sep 26 2012 10:01 am
Subject: Re: [HACK-ADL] The Basics of 3D design
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That code is really close to povray or a renderman client like yafray or
aqusis

Andrew

On 26/09/2012 10:58 PM, "Tamsyn Michael" <tamsyn.j.mich...@gmail.com> wrote:

Thanks guys.  I'm finding OpenSCAD much easier.  I'm currently reading this:
http://www.makerbot.com/tutorials/openscadmanipulate/

And have nearly finished making a glass based on the ANAT logo.
Here's my code for those interested:
union(){
rotate([0,270,0])linear_extrude(height=24) polygon( [
[0,0],[30,0],[30,5],[5,15],[30,15],[30,19],[0,19],[0,13],[21,4],[0,4]
] , [ [0,1,2,3,4,5,6,7,8,9,10] ]);}
difference(){
translate([-12, 10, 0]){cylinder(80,5,25);}
translate([-12, 10, 10]){cylinder(80,5,25);}

}

On Wed, Sep 26, 2012 at 10:41 PM, Andrew Helgeson <cyberte...@gmail.com>
wrote:


 
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Fee Plumley  
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 More options Sep 26 2012, 12:04 pm
From: Fee Plumley <f...@technoevangelist.net>
Date: Thu, 27 Sep 2012 01:34:26 +0930
Local: Wed, Sep 26 2012 12:04 pm
Subject: Re: [HACK-ADL] The Basics of 3D design
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impressive!

On 26 September 2012 22:58, Tamsyn Michael <tamsyn.j.mich...@gmail.com>wrote:

--

Fee Plumley

*>>** CROWDFUNDING SUCCESSFUL <http://pozible.com/reallybigroadtrip>!
reallybigroadtrip can get a bus! **<<*

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sign up to my newsletter <http://rbrt.cc/RBRTnews>.


 
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Steven Pickles  
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 More options Sep 26 2012, 12:15 pm
From: Steven Pickles <thatpix...@gmail.com>
Date: Thu, 27 Sep 2012 01:45:30 +0930
Local: Wed, Sep 26 2012 12:15 pm
Subject: Re: [HACK-ADL] The Basics of 3D design
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If you make a Union of the N and the outer cylinder, then subtract the
inner cylinder from it with difference, I think it produces what you want.

You might need to do a "proper" render with F6 for it to look right. The
"fast" rendering get's a little confused.

difference(){

union(){

rotate([0,270,0]) {

linear_extrude(height=24) {

polygon( [

[0,0],[30,0],[30,5],[5,15],[30,15],[30,19],[0,19],[0,13],[21,4],[0,4]

] , [

[0,1,2,3,4,5,6,7,8,9,10]

]

);

}
}

translate([-12, 10, 0]) {

cylinder(80,5,25);

}
}

translate([-12, 10, 10]) {

cylinder(80,5,25);

}
}

On 26 September 2012 23:00, Tamsyn Michael <tamsyn.j.mich...@gmail.com>wrote:


 
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Tamsyn Michael  
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 More options Sep 26 2012, 4:32 pm
From: Tamsyn Michael <tamsyn.j.mich...@gmail.com>
Date: Thu, 27 Sep 2012 06:02:20 +0930
Local: Wed, Sep 26 2012 4:32 pm
Subject: Re: [HACK-ADL] The Basics of 3D design
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Ah, that looks more like the code I got from one of the examples Pix.
Here's where I ended up:

difference() {
        union() {
                rotate([0,270,0])linear_extrude(height=24) polygon( [
[0,0],[30,0],[30,5],[5,15],[30,15],[30,19],[0,19],[0,13],[21,4],[0,4]
] , [ [0,1,2,3,4,5,6,7,8,9,10] ]);
                translate([-12, 10, 0]){cylinder(80,5,25);
        }
        translate([-12, 10, 10]){cylinder(80,5,25);
                }
        }

}

Still having a problem with the difference, just a separate problem.
I was trying to do what you did, Pix, but couldn't will try and find
out what I'm still doing wrong tomorrow.  I could swear that,
following all my myriad brackets back to their source, it should do
what I want.  :(

 
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Tamsyn Michael  
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 More options Sep 26 2012, 4:45 pm
From: Tamsyn Michael <tamsyn.j.mich...@gmail.com>
Date: Thu, 27 Sep 2012 06:15:24 +0930
Local: Wed, Sep 26 2012 4:45 pm
Subject: Re: [HACK-ADL] The Basics of 3D design
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*facepalm* - I did end up with something that looked like that at one
stage Steven, but because I failed to press f6 I thought the artifacts
were my fault.  Protip about the f6 - thanks!

 
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Andrew Helgeson  
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 More options Sep 26 2012, 4:46 pm
From: Andrew Helgeson <cyberte...@gmail.com>
Date: Thu, 27 Sep 2012 06:16:50 +0930
Local: Wed, Sep 26 2012 4:46 pm
Subject: Re: [HACK-ADL] The Basics of 3D design
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You should look at the CSG section of the povray manual, it will make sense
after

Andrew

On 27/09/2012 6:02 AM, "Tamsyn Michael" <tamsyn.j.mich...@gmail.com> wrote:

Ah, that looks more like the code I got from one of the examples Pix.
Here's where I ended up:

difference() {

union() {
rotate([0,270,0])linear_extrude(height=24) polygon( [
[0,0],[30,0],[30,5],[5,15],[30,15...

translate([-12, 10, 0]){cylinder(80,5,25);

}

translate([-12, 10, 10]){cylinder(80,5,25);
}
}

...
Still having a problem with the difference, just a separate problem.
I was trying to do what you did, Pix, but couldn't will try and find
out what I'm still doing wrong tomorrow.  I could swear that,
following all my myriad brackets back to their source, it should do
what I want.  :(

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