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[shipper506]

So my take on this is:

get a Nema 23 stepper motor to go on the Z axis and use what I have

or

get a larger power supply and stepper motor controllers?

The largest motor controllers I have found are 80v. Will they do?

[JAZZCNC]

So my take on this is:

get a Nema 23 stepper motor to go on the Z axis and use what I have

or

get a larger power supply and stepper motor controllers?

The largest motor controllers I have found are 80v. Will they do?

Well it's a close call really. .? . . . . Nema 23 motors are cheap and if you combine these with 2:1 ratio using pulleys then they will probably do the job with 36V. . . . Think personally in your position I would so go for this option as it's cheapest and easy.

If it doesn't work then I would say Start again with new drives, Nema 23 motors and PSU that match better and sell your existing stuff.

[shipper506]

What do you think about a new "Z" axis like this one ( http://www.ebay.com/itm/CNC-Z-axis-S...item4185589de0 ) to replace the one i have? would this work?

[JAZZCNC]

What do you think about a new "Z" axis like this one

Not a lot.!!

It's just too whimpy for a good router, It uses round unsupported rails and thin aluminium plate so will flex and vibrate giving a poor finish. The bearing and motor coupling design looks poor so chances are accurecy is on lower side. Also poor design with how it connects direct to motor will shorten motor life.
The screw is 16 turns per inch so thats a high pitch(1.6mm) so your Max feed will be lower, 8 turns(3.175mm) would have been better choice.

But if you are just doing light work in softer materials then it will probably be ok.

Just be aware thou the motor isn't included in this sale.!

[shipper506]

Ok Ill keep trying - how about this combination for my existing unit? Ship from USA WAREHOUSE 3Axis Nema 34 Spindle Shaft & Nema23 Stepper Motor CNC . Ill use my existing 36VDC power supply for one of the stepper motor driver - DM542A so each Stepper motor driver will have its own power supply. (if someone explains how to attach pics, I will attach some)

[Clive S]

(if someone explains how to attach pics, I will attach some)

Have you tried using the (Go Advanced) button and then attachment paper clip symbol. ..Clive

[JAZZCNC]

Ok Ill keep trying - how about this combination for my existing unit? Ship from USA WAREHOUSE 3Axis Nema 34 Spindle Shaft & Nema23 Stepper Motor CNC . Ill use my existing 36VDC power supply for one of the stepper motor driver - DM542A so each Stepper motor driver will have its own power supply. (if someone explains how to attach pics, I will attach some)

Well no not really because it's still using low quality components. For instance the motors have 9 & 22mh inductance which is way to high with only 36v & 60V.

Personally I'd forget the nema34 motor and go with nema23 all round. Buy drives that can handle 70-80v and run all motors from one 60-65Vdc PSU.
Forget buying a Kit and buy individual parts that match each other best. Kits are nearly always a Mis-match of components.

Adding pictures can be done from Quick reply by selecting 3rd from end icon on toolbar at top. Then uploading.

[shipper506]

Ok that sounds good - Where am I buying these components from?