Hi,

I am in the process of collecting things for my first ever CNC. I want to use it for PCB milling which I use for my hobby. Since the use is less i set a upper cap for budget at around 5000 Indian Rupees (little more than $100).

I am able to get other stuff, but Steppers are bit heavier for my pocket. They are costing more than Rs.1000 each. So for three of them i will run out of my budget :mad: .

Can you tell me any company/site who ships Stepper (NEMA 23, bipolar, not sure about torque required, i need guidance in this area as well) as Free Samples or at a reduced price:D .

Or even reference to online store which you feel the cheapest should also be equally appreciated :rolleyes: .

your best bet would be to salvage some motor from printing machine

I tried that.. (for these many days..) I could get only one printer motor (http://www.eminebea.com/content/html/en/motor_list/pm_motor/pm55l048.shtml) This is a 7.5°/Step motor. Now I am not sure whether this high°/step motor will do the job or not. I nee two more motors which i am feeling hard to find. Can you suggest any surplus stores?

old hp lazer jets (I, II, III and others) have NEMA 23 200 step motors

I got my first nema 23 motors out of old apple printers along with some salvagable chips

Tom

How about these motors on ebay (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&sspagename=ADME%3AL%3ARTQ%3A%3A1&viewitem=&item=330147511869&rd=1)?
At 5$ i think they are quite affordable to me. But I am not sure whether these will have enough torque to be used in a small cnc mill or not. (btw I am planning for a 6"x4" workarea)

mvadu,
What are you trying to cut? And what is the weight of what you are trying to move? The link you have in your post is for motors with a detent torque of 300 mNm, which is just about 42.5 in oz. I'd aim a bit higher if I were you.

Hi, I am planing to mill a PCB, about 6"x4" max size. weight of actual board would be negligible as such. Yes, the motor has to move the whole lot of stuff, as Y axis motor has to move X-Axis assembly and the base for the cutting board. X-Axis motor has to move the base only. Z-Axis motor has to move the spindle motor, less in weight.

Now since I have already paid 50$ for those motors, I have to do my machine with them only :( let me see how it goes..