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You might want to find a different forum for you question. This is the Linuxcnc forum.

In your python post file, you could put a -minus in front of the z components of your feed and rapid moves. If that doesn't work, multiply by -1 in the feed and rapid functions.

I talked with my dentist a few months about this and he was planning on spending $100k for an Orec (sp?) system. I thought that was nuts. I looked at some youtube videos and still think that kind of...

I haven't tried this one myself, but maybe you could let us know if it works for you:

OpenSCAM

You can use the outer diameter of the roller cage to constrain it by turning a counter bore in one side or the other.
The inner diameter can constrain it, if you put a diameter that is close to it,...

Thanks for posting this Jeff. That was a great video.

on the linuxcnc wiki there seems to be a warning about Opencam:

'and dangerous install; attempts to overwrite your libstdc++ without regard to architecture.'

I'm not sure what you mean by raster scan paths, but that code is actually doing 'waterline' machining to the part from a step file.
It can do profiles, pocketing, drilling, zigzag surfacing, and...

Look at my blog and notice the waterline toolpath. It works well enough for me.

I use it a lot and have been working on improving it. You can check out my blog here:

OpenSourceDesignTools

It has a long way to go before being user friendly, but it has a lot of potential. I...

This might be helpful for dowel pin sizes:
McMaster-Carr

You can buy reamers from L&i that are made for any size you want- press fit or clearance fit. They list some of their reamers as made for...

ok, touche :)

Trolling in the forum... lot of help that is. Good luck to all the Mach users when Microsoft switches everything over to Windows 8 :)

What era is the cnc 4 from ? I have an M40 on my mill that I would like to convert over to emc2 sometime- if I can figure out how to interface to the servo amps.

Were you able to do anything with the jpeg in HeeksCAD? I usually have to use Inkscape to convert images to vector files, but I don't deal with images often.

If you install the HeeksCNC plugin for HeeksCAD,you can create G-code.

Check out the python code in HeeksCNC. I have been using parts of it to backplot gcode into several CAD programs.
Look at this directory for inspiration:

/ - heekscnc - CNC machining add-in for...

There are a lot of sketching functions that aren't there yet. We've been using other cad programs and importing the dxf files into HeeksCAD for the CAM operations. One program that works well for...

I think I see one reason why you aren't seeing much interest- you need screen shots and a little more explanation of what you are trying to do on the front page of the code project.
I know that...

I've heard Dan Heeks comment that he is having problems with complex solids and the code.
I'm running a dual pentium 3 ghz with 4 gig ram and it segfaulted on me.
I might do better by playing with...

ok, I looked at it and found out that my computer isn't powerful enough to do what I want to with it:
1. import the dxf file
2. 'split sketch' to separate the different Z level contours
3. select...

Hi,

I'll have a look at it tomorrow. I need to do some carpentry today.
If you could make each level a separate sketch then you might be able to do a 'loft' to create a solid. Then you could use...

Totally understandable. I have three kids myself and run into that one a lot.

My idea was to use HeeksPython - a python plugin for HeeksCAD that can actually draw geometry automatically. I have...

Ok, I opened the dxf. It appears to be a closed profile made up of small line segments.
What approach are you taking to get this far?
What kind of approach would you like to try to automate the...

John,
Could you post a pic of what you are needing? I'm just curious.
I could have a go of it with HeeksCAD and the python scripting inside it and then show you how I would do it.

Thanks,
Dan

Yes, the subroutines are very powerful. I did a bending mandrel for some parts at work using just macros. I was able to do a series of arcs that got bigger as the cutter progressed moving in the X...

Thanks for the summary Jan. This sounds very streamlined. If you do get a 'recordmydesktop' session going, please do post a link to the youtube video.

Dan

I would be interested in a general view of your setup. Are you using Autocad Autolisp to generate the gcode? I assume you are generating rotary motion commands to knives based on the geometry in...

It depends on what tool you want to use to route the roundover. If you're using an actual roundover bit, you could just calculate the stepover that you need and pull away from the profile when you...

You got me there. You better post this on the mailing list. I haven't seen that error message before.