Using OpenSCAD to drive milling

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Using OpenSCAD to drive milling

JordanBrown
Does anybody use OpenSCAD to drive a 3D mill?  What tool chain do you use?  Any hints?


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Re: Using OpenSCAD to drive milling

nophead
I do 2D milling with PyCAM from DXF files produced with OpenSCAD. I think it can also import STL and do 3D milling but I haven't tried it yet.

On Tue, 1 Oct 2019 at 21:23, Jordan Brown <[hidden email]> wrote:
Does anybody use OpenSCAD to drive a 3D mill?  What tool chain do you use?  Any hints?

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Re: Using OpenSCAD to drive milling

JordanBrown
On 10/1/2019 1:25 PM, nop head wrote:
I do 2D milling with PyCAM from DXF files produced with OpenSCAD. I think it can also import STL and do 3D milling but I haven't tried it yet.

Thanks.  (Though the crossed-out "Windows" in the list of supported platforms is a problem for me.)

Just to make sure we're on the same page, I'm talking about a bottom-of-the-line 3-axis mill, something that's able to move the bit in X, Y, and Z, to carve down from the top of the material.  It cannot rotate the bit into other orientations, so it cannot (e.g.) carve in from the side.

This is what I have: https://www.sainsmart.com/products/sainsmart-genmitsu-cnc-router-3018-pro-diy-kit



On Tue, 1 Oct 2019 at 21:23, Jordan Brown <[hidden email]> wrote:
Does anybody use OpenSCAD to drive a 3D mill?  What tool chain do you use?  Any hints?

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Re: Using OpenSCAD to drive milling

mmaggio
In reply to this post by JordanBrown
I've been importing .stl s into fusion 360 and making them into bodies, a little awkward but any cam software will be able to take the .stls. Fusion has the advantage of being free for hobbiesists and is a very high skill ceiling CAD system in it's own right. 

I recommend picking up fusion immediately and getting at least passable with it, there are so many times when an openscad program would be overkill for what you need, and having your CAD and CAM in the same program has some serious value.

On Tue, Oct 1, 2019 at 3:23 PM Jordan Brown <[hidden email]> wrote:
Does anybody use OpenSCAD to drive a 3D mill?  What tool chain do you use?  Any hints?

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Re: Using OpenSCAD to drive milling

nophead
In reply to this post by JordanBrown
I don't know why it is crossed out because I have only used it on Win7. I did install it in about 2012.

On Tue, 1 Oct 2019 at 21:38, Jordan Brown <[hidden email]> wrote:
On 10/1/2019 1:25 PM, nop head wrote:
I do 2D milling with PyCAM from DXF files produced with OpenSCAD. I think it can also import STL and do 3D milling but I haven't tried it yet.

Thanks.  (Though the crossed-out "Windows" in the list of supported platforms is a problem for me.)

Just to make sure we're on the same page, I'm talking about a bottom-of-the-line 3-axis mill, something that's able to move the bit in X, Y, and Z, to carve down from the top of the material.  It cannot rotate the bit into other orientations, so it cannot (e.g.) carve in from the side.

This is what I have: https://www.sainsmart.com/products/sainsmart-genmitsu-cnc-router-3018-pro-diy-kit



On Tue, 1 Oct 2019 at 21:23, Jordan Brown <[hidden email]> wrote:
Does anybody use OpenSCAD to drive a 3D mill?  What tool chain do you use?  Any hints?

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Re: Using OpenSCAD to drive milling

alexgibson
In reply to this post by JordanBrown

In case it helps you, the type of milling it’s possible to do with this is often called “2.5D” meaning it can move in 2 axes, x and Y, and plunge to a depth in Z, but from above only.  It’s not impossible to cut under an overhang but this involves some clever and careful use of a specific tool bit, and wouldn’t be the first thing I’d try on a machine like this…

 

https://en.wikipedia.org/wiki/2.5D_(machining)

 

+1 for fusion360 as a good tool to use with this, though I am a relative newbie myself.

 

Alex Gibson

 

admg consulting

 

edumaker limited

 

·         Project management

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·         3D Printing

 

From: Discuss [mailto:[hidden email]] On Behalf Of Jordan Brown
Sent: 01 October 2019 21:38
To: OpenSCAD general discussion; nop head
Subject: Re: [OpenSCAD] Using OpenSCAD to drive milling

 

On 10/1/2019 1:25 PM, nop head wrote:

I do 2D milling with PyCAM from DXF files produced with OpenSCAD. I think it can also import STL and do 3D milling but I haven't tried it yet.


Thanks.  (Though the crossed-out "Windows" in the list of supported platforms is a problem for me.)

Just to make sure we're on the same page, I'm talking about a bottom-of-the-line 3-axis mill, something that's able to move the bit in X, Y, and Z, to carve down from the top of the material.  It cannot rotate the bit into other orientations, so it cannot (e.g.) carve in from the side.

This is what I have: https://www.sainsmart.com/products/sainsmart-genmitsu-cnc-router-3018-pro-diy-kit



 

On Tue, 1 Oct 2019 at 21:23, Jordan Brown <[hidden email]> wrote:

Does anybody use OpenSCAD to drive a 3D mill?  What tool chain do you use?  Any hints?

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Re: Using OpenSCAD to drive milling

Robin2
In reply to this post by mmaggio
mmaggio wrote
> there are so many times when an openscad program would be overkill
> for what you need, and having your CAD and CAM in the same program has
> some
> serious value.

I'm very interested in this comment. I have been assuming it would be very
much easier to build the 3D model in Openscad. Certainly I find Openscad
much easier to use than SolveSpace or Freecad.

...R



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Re: Using OpenSCAD to drive milling

JordanBrown
In reply to this post by alexgibson
On 10/1/2019 3:09 PM, Alex Gibson wrote:

In case it helps you, the type of milling it’s possible to do with this is often called “2.5D” meaning it can move in 2 axes, x and Y, and plunge to a depth in Z, but from above only.


Thanks.  I'd heard that term, but misunderstood it.  I'd seen it in the context of tools that had 2D drawings with specified depths for particular areas, and specified cuts for particular lines, but did not have a general ability to model other shapes, even limited by "cut from the top".  (That is, they could not model a hemisphere, even though that's a shape that could be cut by this machine.)

+1 for fusion360 as a good tool to use with this, though I am a relative newbie myself.


I'll try it again.  I tried it on my low-end (but not ancient) laptop, and it was unusably slow.  (And I didn't understand it, but it was hard to understand when it was so slow.)


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Re: Using OpenSCAD to drive milling

OpenSCAD mailing list
In reply to this post by JordanBrown
I've done this in a number of ways:

 - export to an STL from OpenSCAD, use a 3D CAM tool such as MeshCAM or
pyCAM
 - Project and flatten a design and export a DXF and use a CAM tool which
will import a DXF such as Carbide Create or MakerCAM:
https://community.carbide3d.com/t/design-into-3d-games-chinese-checkers/16056
 - match up an OpenSCAD file with an existing CNC generator such as:
http://chaunax.github.io/projects/twhl-box/twhl.html ---
https://www.thingiverse.com/thing:3575705 see:
https://www.shapeoko.com/wiki/index.php/Carbide_Create:_A_Simple_CNC_Box
 - capture the parameters of a file and then write a METAPOST program to
redraw it: https://wiki.shapeoko.com/index.php/Design_into_3D:_box:_fitted

Working on capturing the parameters and then having a Tool Path Language
(tplang.org) file make G-Code.

William



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