I created a simple cube in sketchupfree/openscad, exported as .stl, imported in repetier(velleman version) and sliced with Slic3r.
But the sliced outlines of the layers are not equal?!? and the results are sometimes different using the same Cube.stl?!?
Anyway, i tried to edit g-code. But it took a lot of time to srcoll trough the list and find the incorrect part.
Is it possible to click on a part so that the cursor jumps to the corresponding g-code line ?
Is it possible to copy/paste values from one g-code part to another?
(such as right click on a part, copy ( [x][y][z]), right click on another part, paste ([x][y][z]))
or exists a g-code editor offering this functionality??
edit: i have no 3D printer, but it will be the K8200, so i’m here.
For me it seems to be easier to edit the more or less correct g-code instead of study all programs that clean the 3D data conversion confusion in some way. Am i wrong?
do you have screenshots from those different slicing results? Which slicer did you use?
About the G-code editinig, no, you can’t simply copy one line to another location. Most moves are created using G1 commands for coordinated movement of all four axes, and absolute coordinates. However, a single G1 only specifies the target. The starting point is the current location of the nozzle, i.e. in most cases a coordinate from a previous G1. This not only concerns X, Y, and Z, but also E.
In order to tweak stl data, you might want to take a look at Autodesk’s MeshMixer. As for the G-code: in Repetier Host, marking lines in the editor window will make the corresponding paths appear in yellow in the 3D view.
thanks for your reply,but screenshots can be photoshoped,
look yourself, if it’s alowed here, look via teamview on my computer and see yourself,how can we connect?
[quote=“kuraasu”]Hi HotteKrempel,
do you have screenshots from those different slicing results? Which slicer did you use?
About the G-code editinig, no, you can’t simply copy one line to another location. Most moves are created using G1 commands for coordinated movement of all four axes, and absolute coordinates. However, a single G1 only specifies the target. The starting point is the current location of the nozzle, i.e. in most cases a coordinate from a previous G1. This not only concerns X, Y, and Z, but also E.
In order to tweak stl data, you might want to take a look at Autodesk’s MeshMixer. As for the G-code: in Repetier Host, marking lines in the editor window will make the corresponding paths appear in yellow in the 3D view.
Every version of Slic3r I’ve tried makes a mess of thin walls. For example, the standard hollow test cube prints some sides as a single width, and others as double width. Sometimes the sides change from single to double half way along their length. Cura is much better in this respect.
Ok, no I have time for screenshots or TV session, so let me explain
The edges of the sliced cube are randomly not closed, it varies each time i open the file and slice it.
Im working with a vinyl cutter and a small laser every day. After drawing and importing data to the cutter/laser i make last finetuning in the
the cut/laser data editor itself. Saving this data means it is fixed. If i need the part again, i only have to open the cutter/laser file.
If the cutter/laser file is finalised, i only have to adjust the maschine. I thought it’s the same here.
More g-code-editor functionality could save a lot of time, but maybe i have to think in a different way. How do you handle this issue?
edit: so the g-code software needs two or more steps, slicing , adjusting, …, it makes it easier to controll the result, i have the feeling that steps are mixed together, so that it needs a lot of experience to find out the dependencies of the various parameters. Just to print is not the problem, every stone can do this, i want it in a perfect way the machine can do
which versions of Repetier Host and Slic3r are you using? Velleman-type RH would be 0.95F, but how about Slic3r (see bottom line of the Slic3r window)? Can you upload the cube.stl you’re using for your tests somewhere and post a link?
The software repetier/velleman, sketchup/google and openscad/openscad.org was donwloaded a few days ago, should be the newest ones.
I created a simple cube with sketchup2014 10cm x10cm and exported as .stl, same with openscad.
after hours of reading\looking YT-videos, i think it’s the Slic3r software itself, it’s not a problem, it’s what the software can do.
Maybe, it’s only a virtual thing and the realityprint ist perfect, dont know, cause i have no printer installed.
btw, how can i upload an image here?
edit to velleman support: im missing the community version K8200+, all tested improvements together in one thread, it would be easier for newbies
The most important step is to upload the image to some webserver. Afterwards you can use the [img] tag to link it here. Note that the server sould not require a script or login to access the image file; in such a case (e.g. Dropbox), only a link is possible, but the tag won’t work.
Any post that includes images can be used as an example: the ‘quote’ button will show you the source code behind that post in the editor window.
About Slic3r, I don’t know how often the Velleman-branded version of Repetier Host is adapted to include the new Slic3r, which did have quite a short update cycle during the last weeks.
ok, no picture, no time for this computer stuff, what i mean is this, a cube, generated with 10 looks on the edges like this:
same .stl file, rendered looks like this,
next time
it’s a simple cube, what delivers the algorythm, if i input something more complex?
spending hours and hours adjusting the printer makes no sense cause the g-code is not reliable.
You mean the “seam”? The edge that seems to be missing in some layers (actually, at every layer in one of the corners)? If so: that’s only a visual thing from Repetier Host, don’t worry. The different slicing then results from Slic3r’s option “Randomize starting points”.
well, if a function is called “random”, that’s what you should expect to get. You can switch it off, of course, then you will get the same G-code everytime you slice your test cube.
What that function does:
Layer 1: printing from A to B to C to D to A (ABCDA), a full square, layer complete.
Layer 2: printing from B to C to D to A to B (BCDAB), full square, layer complete.
Layer 3: BCDAB again.
Layer 4: DABCD.
Layer 5: CDABC, and so on.
Next slicing, maybe it’ll start with BCDAB. Different paths, but in the end, it’ll be the same shape.
Switching off the ramdomizer will give you ABCDA, ABCDA, ABCDA, … every layer, every slicing.
The “missing” edge is the one where the printing path for the outer perimeter starts (and ends), and it’s Repetier Host’s way of showing you where the so-called seam (which can be visible in the print afterwards, depending on your printing parameters) will be.
Take a look at the G-code, and you’ll see that the perimeter path starts and ends exactly in the same point. There is no opening, but rather a little bit of over-extrusion, since a small amount of material is printed at a position that has already been filled.
One more thing: ten layers is a really low number. Forget about editing G-code manually. Post processing can be done, both fully and semi-automatic, but anything that’s more low-level than a search-and-replace will take up more time than it’s worth in the end - note that you’ll easily have kilo- and megabytes of code there.
Adding a few lines for a pause at layer x is of course not the problem, but “writing” movements that include the extruder takes so much calculation that you cannot possibly do it yourself in a reasonable time frame.
…but honestly, i don’t understand - The ‘magic’ filling steps are not visible on my screen, maybe another slicer software is needed, do you know some that works with the K8200?
Cheers,
Hotte
p.s.: Am i the only one, who has problems to see something but there is nothing?
G-code is a text format, not binary or such, so you can edit it with any software that can handle e.g. a .txt file. Windows Editor will do, and a batch or bash script, or a custom made perl / python / C# / … program, too. If the post processor can run from command line without user interaction, Repetier Host can apply it automatically, see Printer Settings, Advanced tab.
You can use any slicer you like. Some are integrated into Repetier Host (Skeinforge, Slic3r, in the RC version also Cura), but you can also start the slicer externally and import the generated G-code into RH afterwards. And there are also alternative options to use for controlling the printer besides RH.
There’s nothing magical about the process. The printer commands describe a path, i.e. for a single movement it’s one-dimensional. However, the extruded material is three-dimensional, of course. What you see on the screen, in the 3D View window, is an approximation of how that three-dimensional object will look like. However, this approximation differs in a few details from the real printing process, since there are too many parameters that enter into the equation to calculate all of them.
Perhaps it might help to search for someone in your vicinity who operates a printer, so that you can have a look at the process.
since no one came forward yet, I think the chance is slim.
You might want to check the German section of the RepRap forum for something like that; there’s also a Google map showing the location of a few RepRappers (not necessarily K8200 owners though) near MG.
