Reprap Forum - Skeinforge

Re: Software Backlash Compensation

kiriki-kun — Mon, 02 Jul 2018 01:03:51 -0400

Hi,

i have to do a little bit of digging in this old topic.
I have 3D printer with backlash (and i can't fix it mechanicaly).
Script above works quite nice, but generater another problem. Because it's another move added to gcode, printhead stops for a second in place, where backlash is compensated.
In this place small blob is appearing. Would it be possible, to add retraction before backlash compensation?
Or are there better scripts to compensate backlash?
I have duet WiFi in my printer.

Re: Software Backlash Compensation

alfi666 — Thu, 11 Jan 2018 14:01:53 -0500

Hello,
I am very much interested to test out your webpage Gcode modifier :)
The software posted above seems to be giving me error message so I wasn't able to test with that :(

Re: Software Backlash Compensation

JacquesBotha — Thu, 30 Nov 2017 08:59:43 -0500

Hi all,

All the versions of software mentioned in this post only does linear movement, G0, G1 etc.
However, arc movements, G2 & G3 has not been coded.

I have create a web based GCode modifier that will allow for software backlash compensation.

All GRBL movements commands has been catered for (Including Arc G2 & G3) {in the X-Y plane only - not yet on Z} - since Z is mostly on one direction only, I do not see the point in doing it on Z.... gravity playing a factor as well.

My test so far has been successful with brilliant results (eliminiating backlash)

I have a few small bugs to work out, but if anyone is interested - please let me know - I need some sample G-Code to test ....

Re: Skienforge dead???

Chri — Wed, 09 Aug 2017 01:14:24 -0400

Yes SK is dead, too old too slow, but still very good to learn the detail stuff and print accurate.
You can find the original documentation via the Internet Archive: [web.archive.org]

other actual free slicers are Slic3r, Cura, Craftware

Chri

Skienforge dead???

Martin K — Tue, 08 Aug 2017 16:22:34 -0400

Hi,

I was eager to learn the settings in the Skienfroge engine.

But almost all links are dead.
No manual. No wiki. No third party how to's.

Does anyone know, why the project was abandoned.
Which engine should I use instead for makerbot clones except S3D...

Cheers
Martin

Re: skeinforge_craft.py no such file

François Delègue — Tue, 06 Jun 2017 13:23:44 -0400

Hi Karcio,

there never was Skeinforge packages in any Linux distribution, and this software is no more maintained… It is a set of Python scripts and you need to install TkInter to run it.

You can get SFACT on GitHub, a modified Skeinforge version (should it work with pronterface? probably yes), or send me a private message: I'll provide you a link to the last Skeinforge version.

Regards,

- - - - - - - - - edit:

And I forgot the simpliest: there is Nophed's Skeinforge50plus on Github, last Sk version with ehancements.

skeinforge_craft.py no such file

karcio — Mon, 05 Jun 2017 11:34:25 -0400

Hi Guys,

I'm sure I need to install skeinforge in my Arch, but so far I'm not sure what package I need to install. Using pronterface + slic3r. I was trying find skeinforge_craft.py inmy system but looks like is not there.
My default path for this is:

slice command: python skeinforge/skeinforge_application/skeinforge_utilities/skeinforge_craft.py $s
Slicer options command: python skeinforge/skeinforge_application/skeinforge.py

My error output is:

Connecting...
Printer is now online.
Slicing /home/crystal/Downloads/BallsMk2.stl
Running python skeinforge/skeinforge_application/skeinforge_utilities/skeinforge_craft.py /home/crystal/Downloads/BallsMk2.stl --load /home/crystal/.Slic3r/print/01mm.20infill.ini --load /home/crystal/.Slic3r/printer/safe_settings_printer.ini --load /home/crystal/.Slic3r/filament/PLA_filament_200_60.ini
python: can't open file 'skeinforge/skeinforge_application/skeinforge_utilities/skeinforge_craft.py': [Errno 2] No such file or directory
Loading file: /home/crystal/Downloads/BallsMk2_export.gcode
Exception in thread Thread-15:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 754, in run 
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.7/site-packages/printrun/pronterface.py", line 1411, in load_gcode_async_thread
    gcode = gcode)
  File "/usr/lib/python2.7/site-packages/printrun/pronsole.py", line 891, in load_gcode
    self.fgcode.prepare(open(filename, "rU"),
IOError: [Errno 2] No such file or directory: u'/home/crystal/Downloads/BallsMk2_export.gcode'

any advise about how to get install this skeinforge.

Re: How To Reduce Support Bond?

François Delègue — Sun, 30 Apr 2017 06:18:30 -0400

Hi Plecc,

long time answer too… It seems you don't have to edit gcode, just make an STL including the support part, making it just below (let's say 0.1, 0.2 mm?) the 1st layer to be supported.

And I don't know anything about .x3g files…

Regards,

François

Re: How To Reduce Support Bond?

Plecc — Sat, 15 Apr 2017 14:17:04 -0400

Hi Francois,

Thank you for you response, sorry this reply was so slow.
That's a very interesting post!
Its a real shame skeinforge requires custom code just to produce viable support material, unfortunately editing code to that level is well beyond me!
I think that post ultimately says that I should be using slic3r instead, lol.
Do you know of any other slicing software I could try out that is capable of producing .x3g files suitable for the CTC replicator?
I'm a big fan of how Cura slices and performs can I Produce .x3g files with any Cura hosts?

Regards,
Dan

Re: How To Reduce Support Bond?

François Delègue — Tue, 04 Apr 2017 11:26:10 -0400

Hi Plecc,

Quote

Is the very top layer of the support considered an interface layer, should I be playing with the settings
in the interface section of the raft tab?

I think yes, but I don't remember the link between support and interface… bad.

You have a very good (as usual…) post of Nophead about support bonding:

http://hydraraptor.blogspot.fr/2012/08/peel-able-support.html

regards,

How To Reduce Support Bond?

Plecc — Sat, 01 Apr 2017 12:08:48 -0400

Hi all,

For the last year I have managed to get away without needing any support materials for my models up until now!
I have been working on a new design that will require some internal support so I decided to pump out some basic bridging models and try to get my support material dialled in.
I managed to get 90% of the settings just as I wanted, but no matter what I tweak I cant reduce the bond between the part and the support material. I have seen a few videos online where the host can just peel away the support with very little effort.
Mine are always stuck like crazy, I can make the support itself extremely light and east to remove but the bond layer between support and part are always very heavy.

I'm working with ReplicatorG and Skeinforge on the CTC dual (7.2 firmware I think) and printing with BQ PLA at the moment.
Here are my support settings:-
Support flow rate over operating flow rate (ratio) 0.5
Support gap over perimeter extrusion width (ratio) 1.5
I have also tried both the cross hatch and zigzag style supports with very little improvement.

Is the very top layer of the support considered an interface layer, should I be playing with the settings in the interface section of the raft tab?
Does anyone have any idea how I could reduce this bond?

Re: Skeinforge thin walls gaps

François Delègue — Tue, 13 Dec 2016 11:48:17 -0500

Hi CVMichael,

Quote
But there is this "sweet spot" where the walls are far so they don't touch, but too narrow to put any infill

The better solution is to decrease layers height: Skeinforge will "see" that space between walls can be filled, because width of extrusion will be thinner. You can make"decreasion" tests and see the results with Skeinlayer, without printing (Skeinlayer works with penultimate gcode files, to be generated in Export plugin).

Not too much recommended, you can also increase (decrease?) Fill / Infill Perimeter Overlap.

And, not recommended at all, and it is a supposition, you can play with Inset / Infill Width over Thickness.

Skeinforge thin walls gaps

CVMichael — Sun, 20 Nov 2016 18:38:49 -0500

I googled this, and found that many have this problem, but I did not see a solution that worked.

I did set the extra shells to 0, and no difference (that's the common "solution" to this)
I don't know why the slicer does not put any infill between the walls, there should be enough space, but it just leaves it empty!

The wall thickness for my part is 1.5 mm, if I make the part thicker it will put infill, and if I make it thinner the walls became close enough to join/stick together. But there is this "sweet spot" where the walls are far so they don't touch, but too narrow to put any infill even though by looking at it, there is enough space to put infill.

Did anyone find a solution that works?

My 3D printer is a Mendel90, with a 0.4 mm nozzle

Re: Brim?

Lenbok — Sun, 20 Nov 2016 04:12:20 -0500

You can get a version of Skeinforge with Brim (and other changes) already bundled in at:

[github.com]

Although I see that someone has a fork with a few more recent changes that might be worth looking at too:

[github.com]

Re: Brim?

Alzibiff — Tue, 08 Nov 2016 02:23:46 -0500

Quote
Chri
Yes, you can download a modified skirt.py with brim feature here

Chri

That's top! Thank you Chri. I had done a search for "Brim" in the SF section but not found anything, never thought to search the entire forum for a SF plugin :-) . Lesson learned.
Great stuff!

Alan

Re: Brim?

Chri — Mon, 07 Nov 2016 15:13:24 -0500

Yes, you can download a modified skirt.py with brim feature here

Chri

Brim?

Alzibiff — Mon, 07 Nov 2016 10:49:33 -0500

Are there any settings In SF which will enable me to print what other slicers call a "brim"? I have a number of parts to print which have a relatively small surface area at Z=0 and would like to print what effectively would be a solid first layer which extends from the outside perimeter of my objects to something like 7 or 8mm in order to aid adhesion to the build plate.
I have attempted to add such a thing to the STL files by importing them into my CAD program and working from there but no success.

Alan

Is Skeinforge dead?

shadowjack — Thu, 08 Sep 2016 08:06:19 -0400

I tried to access site at [fabmetheus.crsndoo.com] but it seems there is nothing about Skeinforge. Is project dead? It sounds great from decription - Python, plugins etc - great for people who want to tinker with their gcode.

Re: Skeinforge Documentation

François Delègue — Wed, 15 Jun 2016 15:00:25 -0400

Long time ago I made backups, for Craft plugins and Analyse ones.

Re: Printing border/circle/perimeter

rcboosted — Thu, 07 Apr 2016 00:30:41 -0400

nevermind, found it, it's called a skirt.

Printing border/circle/perimeter

rcboosted — Thu, 07 Apr 2016 00:24:17 -0400

I can't remember what the term is called so I have a hard time googling it. Basically there was a setting to print a perimeter around the object that is not part of the object on first layer. So if I was printing a 10mmx10mmx10mm cube, it'll print maybe a 16mmx16mm square first, then print the cube inside it. How can I turn this on? I can't find it in ReplicatorG under Skeinforge. I'm printing without rafts.

Re: Help a n00b with Skeinforge please!

rhmorrison — Wed, 06 Apr 2016 07:12:08 -0400

Sounds like you have activated/deactivated.

Are you really generating the gcode?
Is Craft - Dimension - Activate Dimension checked?
Does ReplicatorG have simulate active?
[attachment 76024 simulate.png]

Re: Help a n00b with Skeinforge please!

wgaona — Mon, 04 Apr 2016 13:08:43 -0400

Are you using skeinforge separately?
Could you show the gcode generated?
What is your 3d printer?

Re: "Straggler" Defects

wgaona — Thu, 31 Mar 2016 16:56:49 -0400

I have a Mendel90 too.
This seems to the defect shown here which is related with retraction and temperature.
In my experience I have found that temperatures greater than 220 causes this Stringing

Re: Fill Issue

wgaona — Thu, 31 Mar 2016 16:51:15 -0400

Do you have the .stl file? I want to slice it.

Maybe tweaking the smooth option and the Grid parameter in the Fill options can avoid these gaps.

"Straggler" Defects

BSBMX — Sat, 26 Mar 2016 13:21:36 -0400

On most of my prints recently, I've been seeing these fine "stragglers" as I like to call them--essentially they're small strings that are printed alongside the actual print. These can happen anywhere in the print (near beginning or end) on any feature (attached pic is on round objects, but I've had these before on flat walls as well). I would think this is a Skeinforge issue, however I don't see these defects show up in the 'review' session after Skeinforge has sliced a file. For reference, I'm using a Mendel90 and printing at .1mm resolution).

I haven't caught one of these being printed in action, but they appear as if they're made one small dab at a time per layer (you can see in the image that they're made in layers just like the rest of the print). They've always been a very fine strand, so easy to cut off, but still annoying.

Anyone have a similar issue and know a fix for it?

Re: Skeinforge Documentation

wgaona — Thu, 24 Mar 2016 23:46:40 -0400

So many thanks to rhmorrison.
Its post saved me..

Wilmer

Re: Skeinforge Documentation

Bearded Flyer — Mon, 21 Mar 2016 16:25:15 -0400

Bob,

Thanks for the reply. It worked a treat.

Richard

Re: Skeinforge Documentation

rhmorrison — Mon, 21 Mar 2016 04:15:26 -0400

Yes it's not working right!
You can always use the Wayback Machine to look in the past, e.g. Mar 2014.
Simply put YOUR URL ('http://fabmetheus.crsndoo.com/wiki/index.php/Skeinforge') into the EDIT field at the top of the page, press "BROWSE HISTORY" and then pick a year, month and day (e.g. 11 Mar 2014).
Dates in 2015 also work.

Skeinforge Documentation

Bearded Flyer — Sun, 20 Mar 2016 08:56:06 -0400

When I first got my printer about 18 months ago I found the documentation at [fabmetheus.crsndoo.com] a great help.
I have not visited that site for a while (about 6 months) and now when I load the page I do not get anything in the large frame where I would expect to find the main menu of Skeinforge settings although if I click on the 'View Source' tab all of the text appears to be there. I have tried different computers and web browsers but have the same problem.
Has anybody else had, and solved, this problem?

Richard