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The original version of this post on their blog stated that they would release the STL files for the printer once the Kickstarter was successful. Hence my comment asking why not release the actual source files too? The response was this was a typo, but now it seems the original statement is completely gone - I hope this isn't them reneging on their original intention of releasing the files, whi
by
garyhodgson
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General
Hmmm, that's weird - at first I thought the single quotation in your folder name would be causing the problem, but I tried my copy out with a similarly named folder and it worked. With spaces in the name too.
I also checked it worked from SFACT directly (usually I run it via cygwin command line) and that seemed also to be ok.
The snippet you pasted seems to be missing a double quote at the ver
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garyhodgson
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Skeinforge
Just for info.
Whilst fiddling about with Skeinforge I found that the entire penultimate file is not actually required to use SkeinLayer. All that is required is the M103 and M101 commands to tell Skeinlayer when to draw an extruded line and when to draw a travel line.
I made a modified version of Skeinlayer that can read a normal gcode file so long as the M101 and M103 commands are still ther
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garyhodgson
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Skeinforge
Hi Ahmet,
You're correct in that the serial nature of Skeinforge means that working out the summation of a series of moves is not so straightforward. Off the top of my head perhaps an accumulator could be used. The following is only pseudocode as I haven't got time at the moment to try it out...
# Earlier....
xyTravel = 0
zTravel = 0
...
if isActive:
if not self.repository.retractW
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garyhodgson
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Skeinforge
Sorry to hear you're having problems with them.
I've ordered from them four or five times and each time everything was fine. The only time some motors were out of stock I received a reply to my email the same day telling me it would take two weeks. (I ended up changing that order anyway because I had ordered the wrong torque - the modified order came through a few days later.)
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garyhodgson
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General
Mit Google Sketchup: http://sketchup.google.com/
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garyhodgson
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Allgemeines
Hi,
Falls jemand interesse hat, eine Prusa Mendel SKP Datei liegt hier ...
https://github.com/garyhodgson/prusa_mendel_visual_instructions/raw/master/src/models/Prusa%20Mendel.skp
Edit: Es scheint man nicht die Datei direkt von github herunterladen kann - man muss entweder das Repository klonen, oder ich habe das Datei auch hier kopiert: http://dl.dropbox.com/u/22464622/Prusa%20Mendel.skp
Un
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garyhodgson
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Allgemeines
Hi,
Haben sie das Flick pool gesehen?
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garyhodgson
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Offtopic
Hi Shibboleth, Sadly I can't help work out what's happening with your print but I would like to ask that when you find the cause, and you have the time, would you consider adding a photo and short description to the 3D print failure Flickr pool? http://www.flickr.com/groups/3d-print-failures It might help others with the same problem in the future.
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garyhodgson
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Skeinforge
Just to update - I got word from Enrique that the following fix will be applied to Skeinforge. It replaces the existing "if isActive" statement in the getDistanceToNextThread function.
if isActive:
if not self.repository.retractWithinIsland.value:
locationEnclosureIndex = self.getSmallestEnclosureIndex(location.dropAxis())
if locationEnclosureIndex != self.getSmallestEncl
by
garyhodgson
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Skeinforge
I believe you are correct - Skeinforge uses a static retraction amount.
When I realised the difference between the versions I was tempted to kill this thread and perhaps re-raise it as an SFACT issue (which I will probably still do).
However Skeinforge still uses the getDistanceToNextThread calculation to determine the retraction ratio.
In the example above, because the getDistanceToNext
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garyhodgson
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Skeinforge
The Gcode produced as it stands is "correct", but I think that the retract amount is too big, i.e. in the example "G1 E1.67293" should be smaller.
My original post is probably not very clear, particularly now I edited it with "clarifications" about Skeinforge vs SFACT. Below I can show the actual figures used which I think is clearer.
So, taking the calculation from the function:
locationM
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garyhodgson
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Skeinforge
Yeah, it puts it back to the correct position, but my concern is that it retracts too far. i.e. it's retracting as though it was moving from the end of the last line of the last path to the end of the first line of the next path, rather than the start of the next line of the next path.
The retraction speed and distances involved probably mean this doesn't really matter in most prints I guess, b
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garyhodgson
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Skeinforge
Hi,
I'm currently digging through the Skeinforge/SFACT code trying to get to grips with the algorithms and I have found something a bit peculiar. It's either that I don't fully understand the algorithm (highly plausible), or it's a potential bug. This appears to affect Skeinforge (44) and SFACT (V42.4.1) versions.
In the Dimension plugin, getDistanceToNextThread function, the algorithm calcu
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garyhodgson
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Skeinforge
Gah, of course. You don't measure from nozzle tip.
Thanks for taking the time to answer such an obvious question.
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garyhodgson
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Skeinforge
Hi all,
I'm currently trying to get my head around the algorithms used in Skeinforge. Can anyone perhaps enlighten me about the rationale behind the Inset plugin?
I can see that it brings the outer perimeter in by the width of the nozzle (half per side) but I can't work out why, and so far my searching has brought about no answer.
Wouldn't this make the dimensions of the object off by the noz
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garyhodgson
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Skeinforge
Hi Viktor,
Perhaps if Sebastien is too busy to administer the forum then he should divest some of his powers to others, such as yourself. I seem to remember reading talk of consolidating some of the forums which hasn't seemed to materialise, plus my suggestion for improving the email notifications has gone unanswered for a few months now. The reprap forum is a great resource in the 3d printin
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garyhodgson
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Administration, Announcements, Policy
Hi there,
It seems there is a profusion of spam in the forums lately. If the admins need help keeping on top of it I will gladly offer my time to help out.
Cheers,
Gary
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garyhodgson
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Administration, Announcements, Policy
Do you mean something like this: or ?
by
garyhodgson
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General
Hi,
I recommend having a look at Rich's great writeup about building a linear bearing based prusa here:
This has the links and such to Thingiverse for the alternative parts that use bearings, e.g. the X carriage: , the Y carriage: , etc.
Hope that helps.
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garyhodgson
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General Mendel Topics
Hi guys,
I wanted to quickly mention a couple of features I have added to the reprap development tracker that is perhaps of interest...
Themes: The ability to group developments together that share a common theme but cannot be captured using tags or the other metadata. For example, "Bed Adhesion and Anti-Warping" brings together various techniques for getting that first layer down right, main
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garyhodgson
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General
It feels like i'm beating a dead horse here, and I hate "bumping" theads, but is there an admin of the forums who could at least have the courtesy to say whether the above suggestion is possible?
Having to navigate from my mail client to the browser just to see an update to a thread is getting really old, particularly from an android device. The suggestion above is one change to a template.
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garyhodgson
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Administration, Announcements, Policy
Ok, I think it's set up as it should be. The group pool seems to have the features we want (comments, descriptions, tags). I've uploaded an example entry to get the ball rolling, and will make time later to add some more.
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garyhodgson
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General
Well, strike while the iron is hot I say.... http://www.flickr.com/groups/3d-print-failures/
I'll play around with the settings and try and add a couple of examples. Changes to the title, description and alias and such just let me know - I took most of the ideas from the original post
At the moment it's open to the public - if you think it'd be better to make it invite only then let me know
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garyhodgson
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General
Being a programmer my initial reaction to Rich's post was to create a web app for this kind of thing (I see the failiverse.com domain is available But, as C.Cecil points out, a service like Flickr would be much more suitable. It has a couple of benefits too:
Not having to worry about storage costs for uploaded images and such.
Commenting system already there.
Option to have a public group o
by
garyhodgson
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General
Doesn't sound like senseless rambling to me Might convince me to make use of those old boards I have lying around and finally make a heated bed.
In case people are interested I added an entry for this post to the "Bed Adhesion and Anti-Warping" theme in the development tracker i'm trying to get up and running.
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garyhodgson
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General
+1 for design resource suggestions.
I'm really enjoying designing parts for the printer, and i'm learning a lot on the way (which is the point of doing it of course), but I would love to know if there are any guides, books or such which can help me improve how to think about design.
Quite often I will have an idea and start to throw together a proof of concept only to realise there is somethi
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garyhodgson
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Australia, Melbourne RUG
Hi,
I was going to try out a wall tile as a bed, but realised it would have to be heated for it to work. How did you attach your resistors to the tile? Do you have a photo perhaps?
One thing I noticed with the tiles I have (which I found in the basement) is that there is a slight lip on one edge. Other than that it seems pretty flat.
I was a bit worried from hearing about tiles "exploding" bu
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garyhodgson
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General
Just for completeness, Enrique released Skeinforge 42 just the other day which also has the skin module now.
by
garyhodgson
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Skeinforge
Does the BAUD Rate in configuration.h match your host (ie. repsnapper)?
by
garyhodgson
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RAMPS Electronics
