The UV (300-410nm) resins are easily made clear in the visible spectrum.
Mercury lamps in off the shelf DLP projectors output in this range but
the color wheels and optical coatings on the lenses reduce it's efficiency.
On 06/27/2013 09:50 PM, Jon Elson wrote:
>
> The problem with clear resin is
Gregg Eshelman wrote:
>
> What I'd like to see for this type of printer is a clear resin to see if can
> print refractive lenses, as is possible with the newer Objet printers.
>
The problem with clear resin is the light that cures the resin will
penetrate too
deeply, making it hard to have sha
Gregg Eshelman wrote:
> Google this (no, not kidding about the name)
> lemon curry 3d printer
>
> The design uses a DLP projector with color and UV filters removed. 3D models
> are sliced into sections then those profiles are projected either onto the
> bottom of a clear tank or onto the top of t
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On 6/27/2013 3:54 PM, Troy Jacobson wrote:
> Finally success. Last night I got the linuxcnc ui running on the
> bone. The frustrating part is that I did pretty much the same thing
> I've been doing all along. I can say the my laptop was
> occationall
My understanding is that it was done with a small profit motive. There
are several shields for the Arduino's that targeted driving the steppers
and extruders in repraps from several vendors.
http://reprap.org/wiki/List_of_electronics
The only other reason I heard about was the lack of desire to
They still could easily have gone with examining previous work to see what
was attempted.
A recent example here: On a thread here recently, some people were trying
to determine how to keep the spool synchronized with the extruder head so
that the stepper on the extruder head did not need to have a
The man who invented the string trimmer was denied a patent because it was
"obvious" to combine a small gas engine, some aluminum tube, a speedometer
cable and some heavy fishing line into a device to cut weeds.
On Thu, 6/27/13, Bari wrote:
Subject: Re: [Emc-users] Brain-Dead LinuxCNC G-Code
If you use photopolymers with initiators into the visible spectrum
(400-440nm) you can leave the filters in and still achieve 1 second cure
times per <100um layer.
Clear lenses are possible with features down to the few microns with
inexpensive equipment. Sub-micron (>100nm) features are obtain
On Thu, 27 Jun 2013 10:31:46 -0400, you wrote:
>First off.. I don't have a 3d printer.But it seems to me that some
>interactivity with the "printer" might be a very good idea.
>
>How would you feel if you had to run your mill/router/lathe by inserting
>an SD card and hitting the run button!
IANAL as well but the courts seemed to have changed the definition of
"obvious".
http://www.patentlyo.com/patent/2013/01/the-federal-circuits-new-obviousness-jurisprudence-an-empirical-study.html
If you look at these obvious patents you'll see that it doesn't even
mean obvious to the layman or
On Thu, 6/27/13, Dave wrote:
Subject: Re: [Emc-users] Brain-Dead LinuxCNC G-Code Interface?
To: "Enhanced Machine Controller (EMC)"
Date: Thursday, June 27, 2013, 9:29 AM
I have been randomly watching the 3D
printer efforts from the sidelines
and for the most part I have not been impres
On Thu, 6/27/13, Charles Buckley wrote:
Subject: Re: [Emc-users] Brain-Dead LinuxCNC G-Code Interface?
To: "Enhanced Machine Controller (EMC)"
Date: Thursday, June 27, 2013, 8:47 AM
I suspect that that is on their
long-term roadmap.
But, right now, they are trying to re-invent the whee
On Thu, 6/27/13, andy pugh wrote:
Subject: Re: [Emc-users] OT, Programable winch design, need help
To: emc-users@lists.sourceforge.net
Date: Thursday, June 27, 2013, 5:22 AM
On 27 June 2013 10:23, Erik
Christiansen
wrote:
> No, that is in error, I believe, and the original
statement
IANAL,
But as far as I know, the only part of a patent that *really* matters is
the claims. So even though the description seems obvious, the claims
might say something like: where the insulator is made of pure
unobtainium. That might be non-obvious.
Ken
On 6/27/2013 3:53 PM, Charles Buckley
3D Systems filed a patent infringement suit against Form Labs for the
Form1 earlier this year. The original patent had expired and the
original patent holder has even sold off over half of his stock.
http://www.wired.com/design/2012/11/3d-systems-formlabs-lawsuit/
http://news.investors.com/tech
Finally success. Last night I got the linuxcnc ui running on the bone.
The frustrating part is that I did pretty much the same thing I've been
doing all along. I can say the my laptop was occationally acting weird
during this time. I was also led astray by the two constant LEDs (they
were flash
On Thursday 27 June 2013 16:15:48 Charles Buckley did opine:
> And some further patents:
>
> https://www.google.com/?tbm=pts#tbm=pts&tbm=pts&q=ininventor:%22Kornelis
> +Frits+Feenstra%22&bav=on.2,or.r_qf.&fp=5b260c5b98cf1da2&biw=1527&bih=84
> 0
Busy fellow, that Feenstra was. I looked at the fi
On Thursday 27 June 2013 16:08:14 Charles Buckley did opine:
> Well, yes, I would expect that to be the case.
>
> http://www.google.com/patents/US6722872
>
> "Disclosed is a three-dimensional modeling apparatus (*10*) that builds
> up three-dimensional objects in a heated build chamber (*24*) by
And some further patents:
https://www.google.com/?tbm=pts#tbm=pts&tbm=pts&q=ininventor:%22Kornelis+Frits+Feenstra%22&bav=on.2,or.r_qf.&fp=5b260c5b98cf1da2&biw=1527&bih=840
On Thu, Jun 27, 2013 at 1:01 PM, Gene Heskett wrote:
> On Thursday 27 June 2013 14:59:37 Charles Buckley did opine:
>
> >
Well, yes, I would expect that to be the case.
http://www.google.com/patents/US6722872
"Disclosed is a three-dimensional modeling apparatus (*10*) that builds up
three-dimensional objects in a heated build chamber (*24*) by dispensing
modeling material from a dispensing head (*14*) onto a base (*
On Thu, Jun 27, 2013 at 3:33 PM, Dave wrote:
> >>Analog PID works at a (near) infinite
> rate.
>
> Yeah... when was the last time anyone worked on one of those.
>
All the time. The VAST majority of switching power supplies out there are
analog loops. Wall warts, all your computer power supplie
On Thursday 27 June 2013 15:08:26 andy pugh did opine:
> On 27 June 2013 18:33, John Thornton wrote:
> > Opps there is a gearchange component, maybe that is the problem...
>
> Ah, yes. I meant to call it "gearbox"
That is an interesting bit of code Andy, and I've looked at it several
times bec
On 6/27/2013 11:51 AM, Steve Stallings wrote:
>
>
>> I respectfully disagree. As long as the integral term is
>> normalized to the
>> run rate, there is nearly no effect to running the loop
>> faster than then
>> the time constant. Analog PID works at a (near) infinite
>> rate.
>>
> OK
On 27 June 2013 19:29, John Thornton wrote:
> Andy, I'm not following how to populate the table with the bit patterns.
> Can you give me a small example?
It might simply not work…
But if gear 1 was solenoid 1, and gear 2 was solenoid 3 and solenoid 4, then
setp gearchange32.0.table-01 1
setp gea
On Thursday 27 June 2013 14:59:37 Charles Buckley did opine:
> Well, on January 28th, 2014 the next generation of stereolithography
> patents expire. That will increase the resolution a ridiculous amount.
Interesting, until some troll crawls out of the swamp. Are there any other
gotchas that w
Andy, I'm not following how to populate the table with the bit patterns.
Can you give me a small example?
JT
On 6/27/2013 11:14 AM, andy pugh wrote:
> On 27 June 2013 14:03, john mcintyre wrote:
>
>> The gear box has 6 magnetic clutches in the gearboxand 2 magnetic clutches
>> in the headstock
I called it gearchange32 and after rebooting and changing the license
line it compiles and loads.
JT
On 6/27/2013 12:51 PM, andy pugh wrote:
> On 27 June 2013 18:33, John Thornton wrote:
>> Opps there is a gearchange component, maybe that is the problem...
> Ah, yes. I meant to call it "gearbox
On 27 June 2013 18:33, John Thornton wrote:
> Opps there is a gearchange component, maybe that is the problem...
Ah, yes. I meant to call it "gearbox"
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
-
Opps there is a gearchange component, maybe that is the problem...
JT
On 6/27/2013 11:14 AM, andy pugh wrote:
> On 27 June 2013 14:03, john mcintyre wrote:
>
>> The gear box has 6 magnetic clutches in the gearboxand 2 magnetic clutches
>> in the headstock ( high and low range)The gear changes
Must have been a copy and paste issue with windblows... however I did
find your missing the ; after the license
JT
On 6/27/2013 11:14 AM, andy pugh wrote:
> On 27 June 2013 14:03, john mcintyre wrote:
>
>> The gear box has 6 magnetic clutches in the gearboxand 2 magnetic clutches
>> in the head
Sorry figured out how to use personality.
On 6/27/2013 11:14 AM, andy pugh wrote:
> On 27 June 2013 14:03, john mcintyre wrote:
>
>> The gear box has 6 magnetic clutches in the gearboxand 2 magnetic clutches
>> in the headstock ( high and low range)The gear changes only take place,when
>> the
Andy,
When I tested just the pins and parameters the parameters don't show up
with show all...
possibly I don't know how to load a component with a personality...
JT
On 6/27/2013 11:14 AM, andy pugh wrote:
> On 27 June 2013 14:03, john mcintyre wrote:
>
>> The gear box has 6 magnetic clutches
Andy,
It does not compile and the error is
ValueError: need more than 1 value to unpack
I tried a few things and I think your missing a } but I can't seem to
figure it out.
JT
On 6/27/2013 11:14 AM, andy pugh wrote:
> On 27 June 2013 14:03, john mcintyre wrote:
>
>> The gear box has 6 magneti
Well, on January 28th, 2014 the next generation of stereolithography
patents expire. That will increase the resolution a ridiculous amount.
Linuxcnc is a much more adaptable baseline for any of these machines. I
would expect to see a lot of UI changes and movement with it.
On Thu, Jun 27, 2013
I agree with you. When the GGG (Glorified Glue Gun) fad started a few
years ago many of the maker folk looked at Linuxcnc since it had been
used to control multi-axis machines for over a decade. Some of them felt
that it was too complicated and expensive to control their GGG made
mostly of thre
On 27 June 2013 14:03, john mcintyre wrote:
> The gear box has 6 magnetic clutches in the gearboxand 2 magnetic clutches in
> the headstock ( high and low range)The gear changes only take place,when
> there is no load.I have the truth tables to select the magnetic clutches
> required for eac
On Thu, 2013-06-27 at 11:13 -0400, Dave wrote:
> I do a fair amount of industrial PID related software work.
>
> The output of a digital Temp control PID is usually a 0-100% "signal".
> Then that signal is used to vary the heat input to whatever you are
> trying to control.
> For instance, wit
> I respectfully disagree. As long as the integral term is
> normalized to the
> run rate, there is nearly no effect to running the loop
> faster than then
> the time constant. Analog PID works at a (near) infinite
> rate.
OK, point taken. My caution comes from the fact that
many digital i
Lots of good responses already here, but I want to
emphasize a couple of the points.
If you are reading the temperature 20 times per second,
then you should only run the PID loop 20 times per
second. Anything more is just excess gain and an
invitation to trouble. The actual loop rate (read and
cor
On Thu, Jun 27, 2013 at 11:13 AM, Dave wrote:
> Your PID loop is likely running a lot faster than what is required.
Agreed.
> The PID loop should run 10x to 50x the time constant of the control
> system. Any faster and you will end up with very small changes in tuning
> values that make a hu
I have been randomly watching the 3D printer efforts from the sidelines
and for the most part I have not been impressed at all.
I think you are right ... they are way, way behind. To many, it seems
that reinventing the wheel is how they learn but at the expense of
making any meaningful
progre
>Loading an SD card works because it
>is pretty bullet-proof and easy to manage as is just pressing a button.
Also, most of them are running from laptops, so they don't have a
parallel port or PCI slots.
--
This SF.net
Hi Charles.
If I'm not wrong in HAL you can setup "threads" as you need.
So I believe that perform the PID every 1ms is too fast and not needed for
a "relatively slow"
temperature control.
Also because you have a 20ms reading temperature cycle.
If you look at the HAL User Manual you will find the
I do a fair amount of industrial PID related software work.
The output of a digital Temp control PID is usually a 0-100% "signal".
Then that signal is used to vary the heat input to whatever you are
trying to control.
For instance, with band and cartridge heaters, the duty cycle of a Solid
St
On Thu, Jun 27, 2013 at 09:42:37AM -0500, Charles Steinkuehler wrote:
> I was trying some small I gains, mostly between .001 and .024. I
> _think_ the PID thread rate is being accounted for, but if not that
> could easily explain things (I'll have to dig through the code).
The pid manpage tells
I suspect that that is on their long-term roadmap.
But, right now, they are trying to re-invent the wheel. After 6 years of
development, they are now only about 30 years behind the industry
standards.
Rep-rap has been developed from the Maker movement. The one major knock I
have against that is t
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Great info Stephen!
I was trying some small I gains, mostly between .001 and .024. I
_think_ the PID thread rate is being accounted for, but if not that
could easily explain things (I'll have to dig through the code).
I suspect, however, that given
On Thursday 27 June 2013 10:04:30 Charles Steinkuehler did opine:
> I am having some issues tuning the PID loop for temperature control on
> my LinuxCNC controlled 3D printer, so I thought I'd ask about some
> best practices for PID setup.
>
> QUESTION:
> How are gains typically arranged in a PID
First off.. I don't have a 3d printer.But it seems to me that some
interactivity with the "printer" might be a very good idea.
How would you feel if you had to run your mill/router/lathe by inserting
an SD card and hitting the run button! 8-O
Even my el-cheaper printers interact with my PC
The scaling is in the units of the input and output. You don't need to
scale the output 100x as you could just use 100x smaller PID values.
Integral gain should be in the form of output per second given one unit of
input (though I don't know if LCNC normalizes the summing rate or you have
to divi
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I am having some issues tuning the PID loop for temperature control on
my LinuxCNC controlled 3D printer, so I thought I'd ask about some
best practices for PID setup.
QUESTION:
How are gains typically arranged in a PID control loop? Is the PID
outpu
It was just a snarky comment on my part about Windows. [?]
Mark
On Thu, Jun 27, 2013 at 9:24 AM, Charles Buckley wrote:
> Sure.. Windows, Android, iOS... whatever..
>
> Charles
>
>
> On Thu, Jun 27, 2013 at 3:32 AM, Mark Wendt wrote:
>
> > On Wed, Jun 26, 2013 at 2:50 PM, Charles Buckley > >
Sure.. Windows, Android, iOS... whatever..
Charles
On Thu, Jun 27, 2013 at 3:32 AM, Mark Wendt wrote:
> On Wed, Jun 26, 2013 at 2:50 PM, Charles Buckley >wrote:
>
> > Bear in mind that if you separate the GUI from Linuxcnc, you can start to
> > do things like:
> >
> >
> >
> http://arstechnic
Good Day All,
The gear box has 6 magnetic clutches in the gearboxand 2 magnetic clutches in
the headstock ( high and low range)The gear changes only take place,when there
is no load.I have the truth tables to select the magnetic clutches required
for each spindle speed .
Cheers john
> From:
On 27 June 2013 10:23, Erik Christiansen wrote:
> No, that is in error, I believe, and the original statement stands.
> A 1.5g deceleration is one where the decelerating mass experiences 1.5g
> of acceleration forces.
I think that the 1.5g was calculated from stop-distance, so I think
that it is
On 27 June 2013 02:04, john mcintyre wrote:
> I have a mazak M3 NC lathe,that I hope to convert
> to linux cnc control, and need some information or direction to enable the 16
> speed gear change to operate under linux.
Is the gearchange the only speed control, or is there a variable
frequency d
On 06/27/2013 02:37 AM, Steve Blackmore wrote:
> so I don't see what advantage having the printer connected to LinuxCNC could
> be
It should avoid little nasties like this (scope pix near the end):
http://softsolder.com/2013/06/04/marlin-firmware-stepper-interrupt-timing/
Arduino-class microcon
On Thu, Jun 27, 2013 at 12:01 AM, Gregg Eshelman wrote:
>
> It's moronic to run windows.
>
Fixed that for ya... ;-)
Mark
--
This SF.net email is sponsored by Windows:
Build for Windows Store.
http://p.sf.net/sfu/wi
On Wed, Jun 26, 2013 at 2:50 PM, Charles Buckley wrote:
> Bear in mind that if you separate the GUI from Linuxcnc, you can start to
> do things like:
>
>
> http://arstechnica.com/information-technology/2013/06/windows-8-1-offers-native-drivers-for-3d-printers/
>
What, run Windows? ;-)
Mark
---
On Wed, Jun 26, 2013 at 2:50 PM, Charles Buckley wrote:
> Bear in mind that if you separate the GUI from Linuxcnc, you can start to
> do things like:
>
>
> http://arstechnica.com/information-technology/2013/06/windows-8-1-offers-native-drivers-for-3d-printers/
>
What, run Windows? ;-)
Mark
On 26.06.13 10:26, Jon Elson wrote:
> Erik Christiansen wrote:
> > On 26.06.13 01:30, Gregg Eshelman wrote:
> >
> >> If you're near a coast or large/deep lake you might find a deal on a
> >> used electric downrigger. Load it up with 300 pound test line and
> >> there's your mechanicals, just nee
Thank you for the answer, some questions:
1) Boot partition: you mean to small?
1.1) The Linux system runs without any problem, only the real time
thinks (latency-test and Linuxcnc) didn't work.
2) disk/bios combination - you mean special bios settings (if yes what
settings?)
2.1) or you mean t
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