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Your steppers appear to be unipolar steppers which should be driven by a unipolar driver.
See
6 Wire Motors

Ebay has a 3 axis driver at
3-Axis Unipolar CNC Stepper Motor Driver / Controller ~...

The centre wire is common to both coils.

The two coils are bucking in series in a 6 wire motor.
In a six wire motor, only one coil per pole is activated at any one time.
You have to reverse one...

The Allegro chip used in xylotex is worth about $5.00 on a good day.
Most of the rest of the board is caps and resistors.
A repair to the board, including time charges reworking the board and...

Try Contour-Cam
http://www.imsidesign.com/Products/DesignCADSeries/ContourCAMforDesignCAD3DMAX/tabid/324/Default.aspx
or
http://www.magicsystems.com/usa/default.asp

Low cost - Try it

There are a number of sellers on E-bay selling Allegro 3977 boards for about $35 per motor.
The A3977 chip will NOT tolerate shorts across the outputs.
Make a mistake - buy a new chip
If you run...

Here is an autocad DWG exported from DesignCad
I don't know how true it will come out.

Here are zipped files showing the S222 (lookalike) blade profiles resized and angled for different stations of an 8 foot radius wind turbine blade.
The numbers on each file indicate the distance...

Here is the 8 foot S22 blade skinned in Designcad
It is skinned in two sections due to the limits of Designcad
FYI

I have an interest in blades as well
I bought DesignCad 18 $(150) which works with ContourCam ($100)to drive CNC tables
I laid out an 8 foot blade in DesignCad.
It is only partially constructed....

Try Looking on Ebay
There are 3979 chip boards already in production
They are not expensive and it would be worth buying a premade board to see how a proven design works before you invest a lot of...

For belt patterns that are the same tooth and cog, you can cut a piece of matching belt several inches long to bridge the connection between the ends of the belt.
If you are using a continuous belt,...

Has anyone experience using DesignCad 3D Max and Contour Cam

Is this a good combination?
Has anyone used it and would you recommend it?

The price is low $100 for the Cad and $150 for the CAM...

Here is the response I received asking about Contour Cam by Magic Systems

Hi,

Yes, it's the same program.

We are currently in the process of amending the installation process to install with...

Has anyone experience using DesignCad 3D Max and Contour Cam

Is this a good combination?
Has anyone used it and would you recommend it?

The price is low $100 for the Cad and $150 for the CAM...

They are unipolar stepper motors.
They can be driven easily with the allegro unipolar chipsets

They can be wired bipolar by opening the case and adding another wire to split the common wire from...

Harbor Freight uses Yellow Transportation to ship.
Yellow Transportation has bonded warehouses in London and Kitchener.

If you order your mill from Harbor Freight and have it shipped Yellow...

Harbor freight ships by Yellow Transportation.
Yellow Transportation has depots in London and Kitchener.
Harbor Freight will only take your order and ship it to a US address.
So - Call Yellow...

http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=44859
8" x 12" PRECISION MINI LATHE
439.99USD
With shipping it comes to about $610 Canadian
Here is a review comparing the 7inch...

SLA7078m is hard to find.
The SLA7062m is available but still hard to find sellers.
They seem to want between $8 to $12 for the SLA7062m
I have seen the SLA7078m for $13 but you had to buy 100.
...

What resistors would your use for the FET gate inputs on a A3986 board?

Is there a recommended FET gate resistance value that would be best to start prototyping.
As a non-engineer, I cannot...

Why not use a thermocouple and a pic chip which has a 10 bit A/D converter
Add buttons and a LCD display.
Then drive a 110 volt triac with a zero crossing optocoupler and you don't have to code...

I soldered several A3986 chips.

They are really tiny!!!!!!

I tried the desoldering tool on an aquarium pump.
It blew the chip crooked.
I reduced the air flow and it did not have enough heat....

I have just received prototype boards.
They are double sided and thru holed except for 4 capacitors.

I will start stuffing this weekend.
I am still waiting for several components.

I have...

The Allegro 3986 uses current sensing to control the current to the coils.
If the motor is physically stalled, the chopper continues to control the current to the motor. The current drawn by the...

http://www.cel.com/prod/prod_optoapp.pdf
Here is an interesting article that shows how to speed up a slow optocoupler with a resistor to the base pin of the opto-transistor.

I tried it with a...

The easiest way to change the routes is to delete the track and redraw it.
You have to have the track connected in the schematic for it to connect in the board.
...

Here is a discrete double sided board in Postscript and Corel Draw.
If anyone uses these and enjoys them, please post your results.
Thanks.

I am getting closer to the fab layout.
Fets can be soldered to the bottom and bent over to fit a bottom heat sink.
I widened the ground trace.
Increased the size of the 5 volt capacitor
Took the...

I use Target 3001
http://www.ibfriedrich.com/english/index.htm
It has a demo that has up to 100 pins.
I bought the "light" version that has 400 pins on 2 sides
This PC board has about 150 pins...

Another try for the a3986 board
Used several surface mount capacitors. (Found a good buy on E-Bay)
Added FET bypass caps Monday as per data sheet
Voltage reducer darlington is now TO220
FETs set...