On Tuesday 04 August 2020 21:26:28 Chris Albertson wrote:
> So the parts come out about 0.4mm to large no matter what size they
> are. It is because of surface imperfection of is the side very smooth
> and flat?
Doesn't look that bad.
> I would measure after doing a bit of sandpapering to true
On Tuesday 04 August 2020 21:11:56 Bruce Layne wrote:
> I agree with Chris. I want the CAD model to represent the actual part
> and not some fudge factor version of the part. If you don't want to
> tweak the dimensions of the CAD model and you don't want to try to
> tweak the printer settings
So the parts come out about 0.4mm to large no matter what size they are.
It is because of surface imperfection of is the side very smooth and flat?
I would measure after doing a bit of sandpapering to true up the sides.
With a milling machine the tool marks are scratches below the surface but
I agree with Chris. I want the CAD model to represent the actual part
and not some fudge factor version of the part. If you don't want to
tweak the dimensions of the CAD model and you don't want to try to tweak
the printer settings which can be tedious and difficult, you can easily
adjust the
Selecting a feature in the Tree View or Combo View windows on the left
side of the FreeCAD screen and pressing the space bar to hide or show
that feature works the same for me in the 0.19 app image as it did in
previous FreeCAD versions. I also tested it to ensure that it would
hide and reveal an
On Tuesday 04 August 2020 16:13:52 Bari wrote:
I finally got around to measureing the 5x5 cube I did this morning.
X=5.31mm,10.40,15.45,20.58,25.55
Y=5.25,10.35,15.40,20.4925.62
Z=brim 0.70,5,61,10.54,15.57,20.43,25.39
The top 5x5 has a fat spot near its bottom that reads almost 5.9. Only in
X.
On Tuesday 04 August 2020 16:32:45 Martin Dobbins wrote:
> I probably need n!. I find I can't even make freecad-19 do what 16 can
> do, make a part vanish so as to see whats behind it. The highlight
> coloring works on THAT part, tap the space bar to make THAT part
> vanish, and it blanks the
I probably need n!. I find I can't even make freecad-19 do what 16 can
do, make a part vanish so as to see whats behind it. The highlight
coloring works on THAT part, tap the space bar to make THAT part vanish,
and it blanks the whole assembly, no matter what part I've clicked on...
And it all
On Tuesday 04 August 2020 15:05:10 Thaddeus Waldner wrote:
> Can you or someone else please expand on that?
>
> Most VFD that I am familiar with operate between 10khz and 20khz. I
> personally like to configure them upwards of 16khz because I find the
> squealing noise annoying. I suppose that
On 8/2/20 9:59 AM, Gene Heskett wrote:
Discussion, educational/reference URL's all welcome.
FFF/FDM is inherently slow and low res. A resin printer can make those
parts in minutes. The slow and cheap resin printers are under $200 USD
and print an entire layer 100um thick from 4-20 seconds
On Tuesday 04 August 2020 14:50:20 Chris Albertson wrote:
> > That would quite a while. I tried by hand with a piece of 320 but
> > didn't do anywhere enough damage to start helping in 15 minutes.
>
> Of course you can just make the hole larger in the CAD file and
> reprint. But I hate to do that
I don't use the tool table, everything runs as tool 1. This is just a
simple wood cutting router. I don't know what a remap is.
I modified the design and ran it again. It is a sample of a small
round box to try out the Vectric threading tool path. Today the
modified ran with no messages at
Can you or someone else please expand on that?
Most VFD that I am familiar with operate between 10khz and 20khz. I personally
like to configure them upwards of 16khz because I find the squealing noise
annoying. I suppose that the main reason to not do that is that it increases
switching
>
> That would quite a while. I tried by hand with a piece of 320 but didn't
> do anywhere enough damage to start helping in 15 minutes.
Of course you can just make the hole larger in the CAD file and reprint.
But I hate to do that as then I'd not be able to re-use the CAD file for
CNC milling
On Tuesday 04 August 2020 13:23:41 Chris Albertson wrote:
> On Tue, Aug 4, 2020 at 7:11 AM Gene Heskett
wrote:
> > On Tuesday 04 August 2020 05:23:49 andy pugh wrote:
> > > On Tue, 4 Aug 2020 at 09:49, Gene Heskett
wrote:
> > > > And the
> > > > hole size isn't shown in freecad, or I don't
On Tue, Aug 4, 2020 at 7:11 AM Gene Heskett wrote:
> On Tuesday 04 August 2020 05:23:49 andy pugh wrote:
>
> > On Tue, 4 Aug 2020 at 09:49, Gene Heskett wrote:
> > > And the
> > > hole size isn't shown in freecad, or I don't know how to display it.
> >
> > You might need to measure it. As it is
On Tue, 4 Aug 2020 at 17:21, Dave Matthews wrote:
>
> Let's see if it will take the attachment. What would I be looking for
> in the gcode?
/0
TAN[90]
But it looks like plain G-code.
Do you have any remaps?
Is your tool table looking sensible? (Maybe a tool probe routine
polluted that with a
On 08/04/2020 08:00 AM, Matthew Herd wrote:
I am guessing that the source of the trouble is probably the VFD, as 80kHz
seems like a plausible base frequency for driving an AC motor. Only the USC
should be operating at a frequency higher than 60Hz other than the VFD. The
machine uses three
Let's see if it will take the attachment. What would I be looking for
in the gcode?
Dave
On Tue, Aug 4, 2020 at 12:12 PM andy pugh wrote:
>
> On Tue, 4 Aug 2020 at 16:36, Dave Matthews wrote:
>
> > Tried to set invalid pose in tpAddCurrentPos on id 1347!disp is nan, nan,
> > nan
>
>
On Tue, 4 Aug 2020 at 16:36, Dave Matthews wrote:
> Tried to set invalid pose in tpAddCurrentPos on id 1347!disp is nan, nan, nan
Typically indicative of a divide-by-zero.
What does the G-code look like?
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the
Thanks Gene, I just ordered a Rasmi unit that should be able to mount behind
the VFD inside the panel (assuming enough depth in the box). Apparently they
make them for Yaskawa drives, but my Hitachi has the same bolt pattern. I’ll
get it installed and see how it looks. If that checks out,
On Tuesday 04 August 2020 10:27:28 andy pugh wrote:
> On Tue, 4 Aug 2020 at 15:11, Gene Heskett wrote:
> > Freecad doesn't show me that from the step file input either.
>
> https://wiki.freecadweb.org/Part_Measure_Linear ?
not sure if that applies to debians version 16.0, so I've the 19
On Tuesday 04 August 2020 09:09:38 andy pugh wrote:
> On Tue, 4 Aug 2020 at 14:03, Matthew Herd wrote:
> > I am guessing that the source of the trouble is probably the VFD, as
> > 80kHz seems like a plausible base frequency for driving an AC motor.
>
> Add an input filter to the VFD. They are
On Tuesday 04 August 2020 09:00:30 Matthew Herd wrote:
> Yes, I figured as much, but I figure it’s a problem that should be
> solved and the noise looks like a contributing factor.
>
> I am guessing that the source of the trouble is probably the VFD, as
> 80kHz seems like a plausible base
Running LinuxCNC 2.8 on a parallel port setup. Not sure what the
minor number is, installed a few months ago.
Gcode was from Vectric Vcarve 10.5 using the LinuxCNC post processor.
I tried the Vectric LinuxCNC post processor yesterday to see if it was
smoother than their EMC G61 post processor.
On Tuesday 04 August 2020 08:48:28 andy pugh wrote:
> On Tue, 4 Aug 2020 at 13:39, Matthew Herd wrote:
> > I’m wondering if there’s any value in isolating power and logic
> > grounds or isolating either one from the machine.
>
> That isn't always possible, even if you want to. The drives
On Tuesday 04 August 2020 08:37:06 Matthew Herd wrote:
> Sorry for the delayed reply. I did some work on the scope on Sunday
> morning and have attached some pictures of the results. Let me know
> if they don’t come through.
>
> In sort, the results appear to show a roughly 80kHz noise when the
On Tuesday 04 August 2020 05:47:46 Chris Albertson wrote:
> If a 25mm cube prints as 25.04 it may not be because the scale is off.
> You would only know that if you printed a second 50mm cube and it was
> 50.08 My guess is that on your printer the 50mm cube would be 50.04
>
Thats been my
On Tue, 4 Aug 2020 at 15:11, Gene Heskett wrote:
> Freecad doesn't show me that from the step file input either.
https://wiki.freecadweb.org/Part_Measure_Linear ?
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses,
On Tuesday 04 August 2020 05:23:49 andy pugh wrote:
> On Tue, 4 Aug 2020 at 09:49, Gene Heskett wrote:
> > And the
> > hole size isn't shown in freecad, or I don't know how to display it.
>
> You might need to measure it. As it is STL that will end up being
> vertex-to-vertex so may take a few
On Tue, 4 Aug 2020 at 14:03, Matthew Herd wrote:
> I am guessing that the source of the trouble is probably the VFD, as 80kHz
> seems like a plausible base frequency for driving an AC motor.
Add an input filter to the VFD. They are not expensive. Look on eBay
for "Rasmi" (one manufacturer, but
Yes, I figured as much, but I figure it’s a problem that should be solved and
the noise looks like a contributing factor.
I am guessing that the source of the trouble is probably the VFD, as 80kHz
seems like a plausible base frequency for driving an AC motor. Only the USC
should be
On Tue, 4 Aug 2020 at 13:39, Matthew Herd wrote:
> I’m wondering if there’s any value in isolating power and logic grounds or
> isolating either one from the machine.
That isn't always possible, even if you want to. The drives themselves
tend to tie them together.
But, random indexes
Sorry for the delayed reply. I did some work on the scope on Sunday morning
and have attached some pictures of the results. Let me know if they don’t come
through.
In sort, the results appear to show a roughly 80kHz noise when the machine is
turned on, with spikes pretty frequently exceeding
If a 25mm cube prints as 25.04 it may not be because the scale is off.
You would only know that if you printed a second 50mm cube and it was
50.08 My guess is that on your printer the 50mm cube would be 50.04
The printer should have both a scale factor and a bias. you would hope the
scale is
On Tue, 4 Aug 2020 at 09:49, Gene Heskett wrote:
> And the
> hole size isn't shown in freecad, or I don't know how to display it.
You might need to measure it. As it is STL that will end up being
vertex-to-vertex so may take a few attempts to find the maximum.
In fact that could be part of the
On Tuesday 04 August 2020 03:42:59 andy pugh wrote:
> On Tue, 4 Aug 2020 at 01:45, Gene Heskett wrote:
> > While I was out, getting a legal thing underway, the 6807 bearings
> > showed up, but they do not fit, the pieces that go inside need a BIG
> > hammer, and where they fit in the main body
On Tue, 4 Aug 2020 at 01:45, Gene Heskett wrote:
> While I was out, getting a legal thing underway, the 6807 bearings showed
> up, but they do not fit, the pieces that go inside need a BIG hammer,
> and where they fit in the main body shell is too small by half a mm.
What is the hole size in
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