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Wire EDM requires the material being cut to be conductive to electricity. The carbon fibers themselves are conductive (although how conductive isn't clear to me) but the resins are likely not. So you...

Could it be a bent screw? Look at how the waves are lined up with the waves directly above and below. I'm not sure how that would work but they seem to be repeatable by location. Maybe the nut...

You didn't mention if your stepper drivers are full step, half step, /10, etc. so I'm assuming full step.

Take the steps per revolution of the stepper motor (typically 200) times the stepper...

You could try importing your dxf output file into an older version of mach3 (before lazycam was included). That's how I did it before using pcb-gcode.ulp in eagle.

Very nice board layout. Did you use Eagle Layout for it or some other package?

I'll try to answer your questions in order. And if anyone spots an error I've made please chime in.

It looks like the HEI ignition module, coil and spark plug are being used to generate a high...

From looking at the pictures of the C6 spindle board I don't think it would be too hard to repair. In fact I probably have the needed chips in my stockpile of electronic parts. If you're interested...

Stalling the stepper won't hurt the controller as the stepper motor is effectively stalled every time its holding position and not rotating. The reason is because the controller is already limiting...

I'll be watching this build progress. It looks really stout. And I really like the way you mounted and supported the angle iron. Ingenious.

You could also check http://truetex.com/servomod.htm.

That looks like one of those BUD (Big Ugly Dish) positioners. I have a couple in my garage somewhere...

I was going to make something similar to this but the project stalled because of other...

A quick search of cnczone brought up a thread with this link. Then a quick search on google brought up a couple of hits on the first page here. The first one in particular looked pretty well...

I just came across this and thought of this thread. I don't have time to mess with it just yet but maybe someone else does.

Cheers.

Try http://sourceforge.net/projects/gerbertogcode. Not sure if it will do what you need but it is opensource.

The ball bearings are contacts so there is electrical continuity through the contacts and the post when the probe is in a normal position (not touching anything). As soon as the probe tip touches...

You'll have to use a second parallel port for the inputs but here is a circuit to allow feedback to the pc and to the servo drivers. I don't have a board layout but this circuit is pretty simple.

Most people will recommend that the encoder goes on the motor shaft. The main reason I see is that if there is ANY backlash it will manifest itself as servo hunting or vibration as the servo tries to...

Encoder pulses are supposed to be 90 degrees apart. Also don't forget that encoders read off the edges of the "teeth" or slot so that you actually see 4 pulses per "tooth". Your 5:1 reduction on a 50...

There should be 5vdc on the output of the regulator so either the regulator is bad or its not installed correctly. Is it possibly backwards?
Without seeing the board it makes it hard to...

The connections are correct but if you connect the motor as you have in the drawing it will be a half coil arrangment. It will work but you won't get full torque from the motor. You'll probably want...

If you change the direction low active (in the ports and pins configuration) from a check to an X (or vise versa) the direction of the motor will change.

Well, so far no replies for the SLA parts that I'm really wanting to get the libraries for. I looked up how to make part libraries in eagle so I guess that's my next option. I'll post them up if I...

I had to go back and look at the schematic again... The first coil would be pins 1 and 2 (or x1 as in your example). Coil 2 would be 3 and 4 (or x2 as in your example). As you look at the four pins...

Check this.

From the looks of the schematic and board layout on that board the outputs (three 4 pin screw terminals) are the connection to the motor coils. Check the above link and determine...

I'm attempting to learn how to use eagle layout but I find things are easier to learn when there is a purpose driving it. Learned to use solidworks that way too. I'm not designing my own driver...

Yeah.... that one I planned on doing with the old chemical etch method but I needed the lib to make the board. Thanks a bunch. I thought I had gone through that thread and picked up all the files...

I'm looking for libraries of the allegro parts used on the boards from Pminmo's site. I've been through the libraries on the cadsoft site but can't find what I'm looking for. I'm looking for the...

Did someone say cnc eggs?

http://www.taomc.com/studio_machines/egg_plotter.htm

I'm personally waiting for the bacon.

The black paint on those pipes will come off. It's just a matter of if you do it before putting the machine together or cleaning it off the bearings as they wear it away in clingy little chips that...

Just curious if this project was finished. Did it work as expected?