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: Generated Gcode in EMC2

Type	Extension of vector graphics editor Inkscape
Developer	Gcodetools develop team
Written in	Python
OS	Cross-Platform (Windows, Linux, MacOS)
Version	1.6.03
License	GNU GPL
Downloads	7800+

Gcodetools

Gcodetools is a plug-in for Inkscape. It prepares and converts paths from Inkscape to Gcode, using biarc interpolation.

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Just open preferences tab and assign custom post-processor.

There's some help on post processor functions:
http://cnc-club.ru/forum/viewtopic.php?f=33&t=78&p=4682

In the "stable" version -- any idea why it might not pick up the header file in windows? if put a file called "header" in the same folder where the output goes. Thanks!

hmmmm.... have no idea...

What is the full path to output dir, does it contain any spaces or special chars?

I've tried both c:\data and c:\data\ in preferences.

Hello, I buy Roland blade holder with knifes to my cnc for vinyl cutting. It's not tangential knife but dragged knife. I can't find how to compensate free rotation of knife in Gcode (compensation arcs in corners and etc.). Is there some way how to achieve this with gcodetools plugin? Or do you know other way? Thanks

bill.french писал(а):I've tried both c:\data and c:\data\ in preferences.

Hmmmm.... it looks strange... Are there capital letters in the path? It can cause the problem. And check that header file has exact "header" name, without any extension.

Zoid писал(а):Hello, I buy Roland blade holder with knifes to my cnc for vinyl cutting. It's not tangential knife but dragged knife. I can't find how to compensate free rotation of knife in Gcode (compensation arcs in corners and etc.). Is there some way how to achieve this with gcodetools plugin? Or do you know other way? Thanks

We can add such functionality to gcodetools, but we'll need more info what modification should be done to the path.
Corners - just add an arc?
Curvy paths - ???

Here is list of problems with roland draged knife
every compensation depends on diferent Knifepoint offset for different knifes
1.compensation arcs in corners
2. compensation of curvy paths
3.compensation arcs after jump, depends on knifes angle when leaves material
4. entrance circle for calibration of knife angle before start (it will probably perform some aditional cut in 0.0)

I think that all, but I'm not sure.

Zoid писал(а):2. compensation of curvy paths

That's still a question for me. How shold look like compensated path for cirlces arc?

Hello,
I'm trying to use gcodetools to generate gcode for use with my laser cutter. The spindle RPM is used to control the pulse-per-minute (ppm) setting in LinuxCNC.
Regardless of how I set the spindle rpm value in the default tool, I don't see the resulting gcode change at all.

I guess I can force it into the gcode before path but that seems like a workaround. How is spindle rpm supposed to work.

Thanks.

Where have you found spindle RPM in Gcodetools. I believe there's no such option

.
Yes you can use Path-before-Gcode to set up S parameter of define it in the header of the Gcode.

I've got a waterjet machine that needs to make cuts continuously (meaning not turn the nozzle on and off) Is there a way to have many objects and combine them with a line to avoid either retracting during index or turning off plasma etc... The best option would be to be able to create a single path around all objects without crossing over a previous object! While that would be be incredibly cool, right now it would just be useful to find out a way to create a line between two objects the the waterjet nozzle follows. Thanks!

Can you give me sample svg with your paths, to get the whole picture.

There could be several tools to do it, need to try them first...

Here is one example, I'm trying to fit all the parts in as tightly as possible, with this setup I can do an easy index part to part at the tops and not cut into the next part. There are better ways to fit the parts together, but then avoiding cutting over parts would be difficult.

Yep, kind of sittuation

.

I do not think it'll be able to do it automatically.
But I think there are some techniques that can help you to get it easier manually.

First way is to use Edit - Clone - Clone pattern. But it requires some calculations (steps 1-5 in attached svg).
Or you can just put two-four stars as close as possible and draw a path between them, then copy them (while dragging press space bar) using snapping to corners. Once you've made some copyes you can select several stars to make copping faster.

Then you'll probably need a path to go from row to row, if not it'll be much easier

. if not, you can select whole row and press Ctrl+K - to combine paths then press F2 to edit nodes, them select all nodes exept start/end nodes of first/last path and press button which makes two separate nodes connected.

Then just copy the rows.

It can take from 10 to 3 minutes depending on your Inkscape's skill.

Hi Nick,

Today I finished to instal my 4 Axis, to use it to cut soft materials with a circular blade and Gcodetools.

Again I had a strange behavior when I tryed a simulation in LinuxCNC, with some code for tangent knife. It complains that there is a E word in line XX and stops work. But now I found the problem: it is simply that Gcodetools, when calculating the tangent knife angles uses sientific notation, and very small values are written in full precison number. Thats where the "e" for the exponent shows up and LinuxCNC does not like it.

There is a way to limit the precision when it generates the Gcode? Instead of writing very small numbers, we could place a limit on precision. Being very optimistic with my machine capabilities, anything less then a 0.001 radians is superfluous. I think I could go happily wit 0.01 radian.

Thank you for your atention and for this software.

Best regards

Dimitrios

Which version are you using?

You can try to fix it yourself just find in gcodetools.py All
A%s and replace them with A%f, and also there could be some Z%s that might be changed to Z%f as well.

Thanks for the bug report!

Nick,

You are welcome!

Will try to fix it myself this weekend, I am very busy right now. I am attempting to learn python and will be happy to help!

regards

Dimitrios

I am using the last stable version (1.7 ? can't remember now).

Dimitrios

there's two options you can fix it yourself, the way I wrote above or use dev version. The fix for this bug has just been applied.

Nick,

The bug fix is on the developer version or you modified the stable version? I never downloaded a dev version, so I am a bit scared to do it now

, not being a Linux guy, but trying to be...

My machine is complete, and the code generated in Gcodetools work very well. Only that it generates the A axis in radians, and LinuxCNC works in degrees. I do not know how to change it, either in Gcodetools or LinuxCNC, so I am doing the conversion by hand, in test files I am running.

I apologize for being such a ignorant in Python and Linux, in return I offer to test codes in a working tangential knife machine!

Best regards:

Dimitrios

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Inkscape Gcodetools plug-in English support forum

Inkscape Gcodetools plug-in English support forum

Gcodetools

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Install

Usage

Screenshots

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Dev-version

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