There are addins now that post process gcode to convert line segments to G2/G3.
-Original Message-
From: Andy Pugh
Sent: Monday, 26 July 2021 9:08 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Missing Features in LCNC for FFF/FDM Printers
> On 25 Jul 2021, at
> On 25 Jul 2021, at 22:56, fr...@franksworkshop.com.au wrote:
>
> (all gcode interpreters still slice an
> arc in to line segments)
This isn’t their fault, there are no curves in STL.
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Yes, I know I often fiddle with the output of Cura to do things like switch off
the bed heater after the first few layers, there's probably a setting in Cura
that does that but I haven't found it yet. The point is that slicers generally
have more settings than CAM programs because they have
I used a beagle bone with machine kit to drive my mini-kossel. I had to
write a few macros implement the M codes (100,104,106,107,109,140,190). But
that was about it. The axis UI is pretty sluggish on the beagle bone.
I did this at a time when only 8-bit boards were available. LCNC has better
the 3d printer gcode is understandable, and you could handball simple
shapes (I've done a couple for various test and setup things). but you
would really struggle to do the infill as well as a slicer to still provide
strength and minimise infill
thanks Andy,
but Marlin does do Delta robots / configurations too (never used / set one
up myself)
https://marlinfw.org/docs/gcode/M665.html
On Sun, 25 Jul 2021, 21:04 Andy Pugh, wrote:
>
>
> > On 25 Jul 2021, at 19:48, Rob C wrote:
> >
> > what is the benefit of using lcnc for fff/fdm
It is like the relationship of using CAD to design a part then using CAM to
produce the g code to machine that part. Some people know enough about g code
that they often don't use CAM, or are able to "massage" the output of CAM to
produce different results. Others may not care.
CAD can also
> On 25 Jul 2021, at 19:48, Rob C wrote:
>
> what is the benefit of using lcnc for fff/fdm printer?
One thing is kinematics. If you have a non-trivial kins then LinuxCNC can
handle it.
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I've been happy with LinuxCNC 2.8 as-is for running my FFF printer.
--
Sebastian Kuzminsky
On 7/24/21 2:10 PM, Bari wrote:
What are the missing desired or required features in LCNC for
controlling FFF/FDM printers?
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LCNC can easily handle things like a FDM/FFF that over-molds parts or is
built like a lathe and deposits thermoplastics or uses a syringe or
peristaltic pump. The slicers really come up short. They do make up for
the lack of a trajectory planner in some FFF/FDM firmware.
On 7/25/21 1:46 PM,
is this not just reinventing the wheel for the sake of it?
what is the benefit of using lcnc for fff/fdm printer?
I am not trying to downplay the idea / application or lcnc or its
capability. (dispite it may appear so)
I ask because I run marlin (free) with octoprint (octopi) (again free) on a
99% of the "magic" in 3D printing happens in the slicer. All the printer
controller needs to do is move the steppers in a very stupid
way.Acceleration limits and such are all done in the slicer. Notice that
the g-code files for some parts are MILLIONS of lines of g-code that do
very tiny
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