Chris,
You might try Synergy, does the whole ball of wax. Not too expensive. Takes time to learn. Parasolids based. 2D, 2.5D, 3D, wireframe, solids,  turning and probably something i missed. Unusual feature is extrusion screws. Runs on linux; will run on Windows but you lose a few features. Has a 30 day free demo.
https://www.webersys.com/

As far a photoshop; gimp is pretty good but maybe not so easy to learn.

YMMV

Dave

On 9/16/20 12:15 PM, Chris Albertson wrote:
No.  I don't know of any CAM software for generating toolpaths for
lathes that runs on Linux.

The best 3D CAD that runs on Linux is  https://www.onshape.com/. But unlike
Fusion360, Onshape does not have the ability to generate toolpaths unless
you get some 3rd party add-in software.

I have two computers here.  An iMac for most things and a Linux based
16-core Xeon PC with nVidia GPU for robotics software development.  Onshape
on the Xeon is 10X faster than Fusion on my older iMac   But I've not
figured out a good way to translate the Onshape models to g-code.

Gene suggests wring g-code by hand but that simply can't be done for
complex parts and even if one could do this there is no "proof" that
g-code I write is the same as what I designed in the CAD system.

One solution is running a virtual machine on the Linux PC, installing
Windows 10  on that and then Fusion360.   But this requires a rarely
powerful Linux PC.
(At least as a minimum, a 4-core i7 with 16GB RAM and SSD.)

I've been a Linux user (both professional and at home) for a long time and
before Linux existed,  BSD UNIX and Solaris but then one day I wanted to
edit video and process images shot with an SLR.   Adobe is the only game in
town for professional-level media editing unless you consider Apple's Final
Cut Pro X.    None of this runs on Linux.


On Tue, Sep 15, 2020 at 11:38 PM R C <cjv...@gmail.com> wrote:

On 9/16/20 12:09 AM, Chris Albertson wrote:
Fusion 360 can generate g-code for mills and lathes.  It's free even for
commercial use until you make $50K using it.

Fusion is a little bit like Freecad but is more complete and better
supported as you would expect of a product from Autodesk.

I have heard about that one.   does it run on Linux too?



On Tue, Sep 15, 2020 at 9:39 PM R C <cjv...@gmail.com> wrote:

Hello,


I have been using freecad for designing parts, and then milling them on
a sherline mill, getting the hang of that a little bit.


I have a lathe too, that works with CNC linux, but noticed heard, that
you can't really  make parts, or g-codes, with it for a lathe.


What wold be a good choice for designing, simple, parts for a lathe,
that will create g-code for it?


thanks,


Ron



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