Onsrud 2 Flute 1/4" Cut Diameter Upcut Ballnose End Mills

Your book built stepper motors have different wiring colors than what you have in your instructions about pairing the wires. Do you have an updated version?

Our book is a bit outdated with our current stepper motors we have for sale, however the motors recommended for our scratch build kit (same as in book) is our 425-oz motors with 8 wires (https://www.buildyourcnc.com/Documents/PN.SM60HT86-2008BF-U%20(inhouse%20PN.60BYGH303-13)%20(1).pdf) now you will join the 8 cables in pairs that will convert it to 4 wires. Wiring: Red and Blue to A+, Yellow and Black to A-, White and Brown to B+ and Orange and Green to B-.

Would the 425 Oz motor to be strong enough to turn a 4ft 2005 Ballscrew attached to a Gantry that is about 20-30lb?

Yes, these 425 oz-in motors are very strong. 20-30 lbs is actually very light for these motors, especially when used with ballscrews as the friction coefficient is very low. If you ask the customer service live a question like: "how much weight can my motor lift", you will find the formulas to determine the amount of weight the motors at a particular oz-in rating can move. Typical friction coefficients are included in those formulas.

Which electronics package is required for the CNC machine from the book designs?

The book design uses all NEMA 23/24 motors which can be found here: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo I recommend the Mach3 USB option as you will be able to use the USB connection for control. If you are planning to build from the plans developed by the folks over at Woodsmith Magazine which is loosely based on the book design, use this electronics package: https://buildyourcnc.com/item/electronicsAndMotors-3axis-heavy-gantry-elcombo

What steppers are required for the X, Y, and Z axis of the scratch build kit? Do they all need to be the same rating?

The required motors are the 425 oz-in stepping motors, would be the required motors to run the machine efficiently.

What size stepper motors does the blueChick use?

The blueChick uses NEMA 23 425 oz/in motors.

What size motor is powering the y axis on the greenLean CNC machine?

For our greenLean CNC vertical machine, was built and controlled using 2 651-oz in motors/425 oz-in motor. The 651-oz motors runs both the x/y axis, as our 425-oz motor controls the z axis.

What Should I buy to complete the basic laser kit

The laser components needed for a typical CO2 laser cutter and engraver are as follows: - The laser tube and laser tube power supply. We currently have 40W and 80W choices. The laser power supply must be pred with the laser tube (40W power supply with 40W laser tube, for instance) -- 40W CO2 Laser Tube: https://www.buildyourcnc.com/item/Laser-Component-Laser-Tube-CO2-40Watt -- 40W CO2 Laser Tube Power Supply: https://www.buildyourcnc.com/item/Laser-Component-Power-Supply-CO2-40W -- 80W CO2 Laser Tube: https://www.buildyourcnc.com/item/Laser-Component-Laser-Tube-CO2-80Watt -- 80W CO2 Laser Tube Power Supply: https://www.buildyourcnc.com/item/Laser-Component-Power-Supply-CO2-80W - The optics for bouncing the laser energy around the machine: -- Mirror Mount (select the 25mm for easier alignment): https://www.buildyourcnc.com/item/Laser-Component-Mirror-Mount-20mm -- Mirror (make sure to select the correct size that matches the mirror mount): https://www.buildyourcnc.com/item/Laser-component-20mm-mirror-25mm -- Nozzle (which also houses another mirror, and houses the final focal lens): https://www.buildyourcnc.com/item/Laser-Component-Nozzle-20mm-lens-mirror: https://www.buildyourcnc.com/item/Laser-Component-Nozzle-20mm-lens-mirror - The laser controller that controls the laser cutter and engraver. This part provides a contorl panel, computer interface and drives the motion electronics: https://www.buildyourcnc.com/item/Laser-Component-Laser-Control-System - Safety Eyewear Tinted: https://www.buildyourcnc.com/item/laser-components-goggles-safety-tinted - Safety Eyewear Honeywell: https://www.buildyourcnc.com/item/laser-components-goggles-safety-honeywell The motion electronics that move the mirrors and nozzle: This selection will depend on the size of machine you will design (the selection below will provide a good medium range): - Motors/Drivers (one for each axis in most cases): -- 425 oz-in torque motor: https://www.buildyourcnc.com/item/electronicsAndMotors-nema24-425ozin -- 3.0 Amp Driver: https://www.buildyourcnc.com/item/electronicsAndMotors-stepper-driver-3!0a Typically, 2 motors and 2 drivers are needed for a 2 axis laser system (oves the x and y axes). Power supply for the motors and drivers (8.8 Amps and 36 V output): https://www.buildyourcnc.com/item/electronicsAndMotors-power-supply-24v-36v

what is the size of the shaft for the 425 oz stepper motor?

6.34mm

What is the replacement Z axis motor for a SM60HT86-2008BF-U2?

This is a NEMA 24 motor. It could be dual shaft or single shaft, so be sure to choose correctly. Holding torque is generally measured in Nm globally, and translated to ounces/inch in the United States. Our NEMA 24 motors are rated at 425 oz/in holding torque. Additional Information:

what is the driver needed for 425OZ on nema 24

The driver that the 425 oz-in motor requires is a 3.0 amp stepper motor driver found here: https://www.buildyourcnc.com/item/electronicsAndMotors-stepper-driver-3!0a This driver has the capability of various stepper motor current draws up to 3.0 amps.

What electronics configuration is included with the blackfoot if I choose that option?

There are three options on the blackFoot product page. Two options include either electronics that use the USB interface, or parallel interface. Both of these options include stepping motors (two 425 oz-in and one 651 oz-in), motor drivers (two 3.0 amp and one 6.0 amp), power supply and either a parallel breakout board, or USB breakout board. The USB interface must be used with the planet-cnc software. The parallel interface can be used in a wider variety of control software but will require a parallel port on your computer. If a parallel port doesn't exist, you can purchase a PCI parallel port adapter (for desktop computers only). The other option does not include electronics. This option is if you already have electronics, motors and drivers that will work with this machine, or you wish to purchase the redLeaf or redSprout assembled and plug and play CNC electronics and computer system.

What does an electronics combo include?

There are a few electronic combos that include various motors and drivers, but common to all of these are the power supply (36v) and breakout board. The most common combo is the standard 3-axis combo which includes three 425 oz-in motors and three 3.0 amp drivers. The heavy gantry combo includes one 651 oz-in motor and 6.0 amp driver and two 425 oz-in motors and two 3.0 amp drivers. The combo for the greenBull CNC Machine kit is three 651 oz-in motors and three 6.0 amp drivers.

what are the shaft sizes on the motors in the heavy gantry electronics kit?

The heavy gantry kit features 1 NEMA 34 651oz-in 1/2" Dual Shaft motor and 2 NEMA 24 425oz-in 1/4" Dual Shaft motors.

The motor was tested on the same axes were the others work but one of the NEMA 24 425 Oz motors dose not turn just jitters.

The NEMA 25 motor uses a different current than other motors. Make sure when you test the NEMA 25 motor, the current setting is at 2.43.

The instructions for the 3-axis combo at https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo seem to be missing. Can you look into that.

To wire the CNC electronics, use the tutorial for the specific interface board you are using. If you have the parallel breakout board, use this tutorial: https://buildyourcnc.com/CNCElectronicsandWiring.aspx If you have the USB interface board, use this tutorial: https://buildyourcnc.com/tutorials/tutorial-Electronics-USB-Interface-Wiring Additional Information: Additional Information: Additional Information:

Same on the vlxl. Is the y stepper wired as in the diagram or is there a different diagram?

The Y-Axis on the vertical laser XL use the stepper motor on this link: https://www.buildyourcnc.com/item/electronicsAndMotors-nema24-425ozin Here is the wiring diagram for this stepper motor: https://www.buildyourcnc.com/Documents/PN.SM60HT86-2008BF-U%20(inhouse%20PN.60BYGH303-13)%20(1).pdf Use the bipolar parallel option for wiring: Red/Blue - A+ Yellow/Black - A- White/Brown - B+ Orange/Green - B- Additional Information: As in, wire all 8 in pairs? Also, what would you suggest for lubrication on the rails? Additional Information: Yes, the color/color would be two separate wires going to a single terminal on the driver. The lubrication question would be great as a new question on the CSL. Also, the above link to the pdf isn't parsing correctly. The link to the pdf datasheet is in the description in the first link (link to the stepper motor).

Resetting machine up. I have the Redleaf computer but no am manually hooking the motors to the terminals. I have Brown/White twisted, Blue/Red Twisted, Orange/Green Twisted , and Black/yellow Twisted. I remember he had me twist them in pairs on 2 motors and my 3rd motor has direct 4 wires. Which goes to A+ , A-, B+ and B-

Wire to motor connections: 651oz-in NEMA34 (4 leads) Red - A+ Green - A- Yellow - B+ Blue - B- 425oz-in NEMA24 (8 leads) Red + Blue - A+ Yellow + Black - A- White + Brown - B+ Green + Orange - B-

Ok, been lurking for a long time and trying to determine motor size for my application. I am a woodworker and only looking to 3 axis, and trying to determine motor size. I imagine a PC7518 as my motor and table 2'x4'

Dealing with the motor sizes and what you will be designing structure wise, being a metal structure or wood structure. Also the which method in driving your axis, being roller chain with sprockets, or lead screw/guide rails etc. Now for a 2' x 4' CNC machine a good overall machine will do excellent with our 425 oz inch 3 axis electronic combo, but if you are looking at a stronger firmer and industrial purpose machine our 651 oz inch 3 axis electronics combo will be your best choice. Now for your router that will be your preference on overall performance and affordability, we recommend a PC 890 series, although we preferably choose a spindle/inverter combo for the maximum life expectancy over any router and the 90% cleaner and 70% quieter over any router out today! Additional Information: Thanks for the reply. I'm a newbie to CNC so the options seem daunting to find the best solution. I'm a woodworker for 25 years, and by trade an IT Manager in manufacturing. So I'm very familiar with sketchup-pro where I design my pieces. I have watched your vids and Since my purpose will be cutting ply, and mdf, and solid wood mostly cherry for parts, I want a motor that is on par with my 7518. I'm thinking spindle since I'm afraid a standard router will overheat. As to motion type, I'm still learning which to choose. I don't know which is better chain leadscrew or rack and pinion. Obviously my budget is not unlimited, so the 3k range is where I'd like to stay.

My stepper motor has little to no torque on anything less than 1/4 steps.. tested on two drivers verified to be working. Can this be remedied?

For our motors, you must verify the correct wiring for each. 425 oz-in motor: (Wiring: Red and Blue to A+, Yellow and Black to A-, White and Brown to B+ and Orange and Green to B-.) 651 oz-in motor: (Wiring: Red to A+, Green to A-, Yellow to B+ and Blue to B-).

motor wiring

425 oz motor wiring: Red and Blue-A+, Yellow and Balck- A-, White and Brown- B+, Orange and Green- B-.

May i have more detailed Information aboute the 4 Axis Electronics Combo? We're using EMC2 and i wanna check compatibility first before I'll buy some. https://www.buildyourcnc.com/Item/electronicsAndMotors-4axis-425-elcombo

The electronics packages come with standard stepping motor drivers, stepping motors, power supply (36v and 8.8amps), and a breakout board (USB or parallel, depending on the option you select). The USB will not work with linuxcnc, but the parallel breakout board works fine with linuxcnc. All of our drivers work well with the linuxcnc software. We use this software with some of our machines and we also sell the CNC electronics / computer system (redLeaf and redSprout) with linuxcnc installed and tested (if the customer selects linux over windows or requests a dual boot system).

Just purchased the book "Build Your Own CNC Machine". Can I get hardware and electronics kits and how?

The electronics (stepper motors, drivers, power supply and interface board) can be found here: https://www.buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo If your computer cannot connect to the parallel breakout board (the interface card), just make sure to inform us that you need the USB alternative.

I've built a machine where the y axis has (2) 425oz motors, x axis has (1) 425oz. motor, and the z axis also has (1) 425oz motor. Would it be better to purchase a redleaf system with 4 drivers? or can I just connect both y axis motors to the same driver for a total of 3 drivers?

In all CNC electronics configurations, you will need the motor paired with its own driver. If two motors/drivers are intended for a single axis and the motors need to turn at the same rate and in the same direction, then the two drivers for these motors should be connected to the same signal wires from the breakout board (step (CP) and direction (CW)) signal wires. If the motors need to turn in opposite directions, then either one driver will need to have the direction signal inverted, or resolve the opposite direction through a change in the mechanical drive train (i.e. flip the rack on a rack and pinion configuration, or in a roller chain setup, have the chain ride along the opposite side of the drive sprocket). How do I go about purchasing a redleaf system with 4 drivers, where the (y) and (a) driver are connected to the same signal from the breakout board? I'd also need them to rotate in opposite directions. The redLeaf webpage contains a purchase option for an extra motor and driver. We can setup the redLeaf system uniquely so it conforms to your application (i.e. motors running in opposite directions).

Is the shaft diameter of the NEMA 23 motor 1/4 inch?

The NEMA 23 425-oz in. motor has both input shafts at a 1/4". Additional Information:

In looking for a stepper motor amongst old parts in my lab, I found one with a sticker that says buildyourowncnc.com and PN SM60HT86-2008BF U2 on it. I found a Q&A on your website that says it's a NEMA 24 motor with 425 oz/in holding torque. I was wondering if you were able to confirm this? Any specs sheets and details of the motor would be much appreciated

The motor with that model number is here: https://buildyourcnc.com/item/electronicsAndMotors-nema24-425ozin

I'm planning on using your 425 oz motors and need help on selecting the right interface and driver boards. The PoKeys57 CNC USB card looks good but I wonder if the 2.5 amp driver boards shown with it are enough for the 3 amp motors?

You can use the Pokeys57CNC board with our 3.0 amp drivers. The Pokeys57CNC has all of the headers necessary to provide the pulse train to any common stepper driver. Here is the link to the Pokeys57CNC interface board: https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach4-mach3-USB-ethernet-Board Here is the link to the 3.0 amp stepper motor driver: https://www.buildyourcnc.com/item/electronicsAndMotors-stepper-driver-3!0a

I'm building my own machine using your motors and drivers. What is the best dip switch settings for the 3.0 amp drivers powering the 425 oz motors

The settings that you will use for your 3.0 amp driver to properly power and turn your 425 oz-in stepper motor will cheifly depend on your application and the mechanical parts you are using on your machine. In all circumstances, the amp setting for the stepper motor (according to the datasheet) should be 2.8 amps. Use the closest setting on the driver without going over. Here is a good rule of thumb for the microstepping which will correspond to the resolution, but wil also affect torque. You always want to try to achieve the best torque and resolution for the axis you are moving but go with the lowest microstepping possible. In cases where there is mechanical advantage, like a lead screw scenario, where for each motor revolution, the axis move a very small amount, you will want a very low microstep value. This is because the mechanical configuration will provide most of the finer resolution and you will not need the microstepping to assist in this. Increase the microstepping only in conditions where the axis is not moving smooth enough, or where there is a mechanical disadvantage. A mechanical disadvantage would be where the stepper motor is causing a great amount of movement in the axis and the resolutions suffers from this condition. Increase the microstep value up to your desired resolution, but don't go over since the torque of the motor will decrease.

If I use a Porter Cable 3-3/4 router motor what size stepper motors do I need?

You can use the standard electronics combo: http://www.buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo. The size of the stepping motors are generally sized with the overall machine structural weight, inertia of parts, the type of mechanical parts used to move the axes, and actually, less by the router which is more connect to how the machine is controlled.

If I purchase the Heavy Duty redleaf system (651 oz-in motors) and your 4th Axis Tail Stock setup will you configure the 4th axis to the computer? Your site states the 4th axis add on is "for a total of 4 axes 425 oz-in motors only"

We can configure the redLeaf or redSprout to control the motor of a 4th axis. The driver we use for the motor on the 4th axis is our standard 3.0 amp driver.

I recently purchased the 3 axis mach3 usb kit the motors have 8 different colored wires (no stripes on wire just solid color) all instructions have different colors. cannot find tutorals. does the mach 3 hook up same as planet? please let me know where I can find wiring diagram to hook up mach 3 usb BOB and motors (I am new to this kind of work projects)

can not get the limit switches to work on the usb controller board Additional Information: Wiring the motors to the drivers for our 8 wire motor is probably the 425 oz-in NEMA 24 stepping motor. Here is the URL for the diagram of the motor: https://www.buildyourcnc.com/Documents/PN.SM60HT86-2008BF-U%20(inhouse%20PN.60BYGH303-13)%20(1).pdf Wire it in bipolar parallel as specified on the data sheet. Here is the URL for the motor to check if it is the same that you purchased. https://www.buildyourcnc.com/item/electronicsAndMotors-nema24-425ozin The USB mach3 board URL is here: https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board The wiring diagram is on that page and instruction on how to use it.

I received the electronics for book build cnc machine. I need to know how much weight the z-axis motor can hold since my (craftsman) router seems to be heavy. It is 2HP with variable speed

The motor is helped by the mechanical leverage of the screw. The 425 oz-in motors that are included in the standard electronics combo has very high torque for that type of machine. You will have no problem using that motor for the book machine. We use that motor for very heavy spindles on the blackToe and blackFoot CNC Machine kits. You will need to do the mechanical leverage calculation along with the torque of the motor to determine the actual weight it will lift. The calculation will need to consider the type and pitch of the screw and it would also consider the gravity constant of 9.8 m/s/s. If you need me to determine this formula and work out the calculation based on the screw you are using, please let me know. Additional Information: thank you for the reply. I would be really good to know the calculation. The lead screw is 1/2" diameter with 13 TPI. Please provide the calculation. And one more question. If I am cutting 18mm MDF with 6mm cutting bit (so 6mm pass), what can be the maximum speed rate of cutting and spindle speed of router? thank you

I plug in my redFly for the first time and after configuring Mach3 and rechecked my settings axes Y and Z are working well, but X is not working, just for testing I plugged in each motor to the Y and Z and they work fine, but no motor works when plug into the X axes of the redFly, also one of the NEMA 24 425 Oz motors dose not turn just jitters.

You will also need to check if the mach3 configuration and the wiring. Since you tested the connection from the motors to the drivers, the connection from the computer to the interface may still be the issue. It could also be the connection from the interface to the drivers, but we test all of these units going out, so I don't believe that would be the problem. If you have a redfly that uses a parallel cable, you may need to check to make sure the parallel cable is functioning properly, and also, make sure that the interface is also powered using a usb cable. If you have a usb interface (the terminals will be labeled XD, XP and so on), then there may be a wire not seated correctly in a terminal.

I have theNema 24, 425 Oz stepper motors kit what are my Ports and Pins?

The ports and pins are designated by the breakout board that you have, Now here are the schematics for both(https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/ and https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/) Which for the Parallel the pins will be 1,14,2,3,4,5,6,7,8,9. For 1,14 you will need to use them together for a additional axis. Setup will be (ex.mach3) step in (2) / direction pin (3). continued for other pins, 4,5 6,7 etc. Now for the USB it has the label on the board right next to the terminal blocks, x-axis/etc.

I have a lead screw machine I built from the book plans (i know, ancient history) and I'm thinking of converting the X and Y axis to rollerchain. Assuming I can configure my controller appropriately, is there anything I should buy besides chain, drive cog, tension cog and mounting hardware?

You want to make sure that the motors will be able to provide the necessary torque since there will not be mechanical advantage using roller chain. You will need a way to fix the chain to each end. I like to use #4 - 3/4" screws and #4 nuts. You will need a drive sprocket for each axis and a couple idler sprockets on each axis to serve as tensioners and guiding the roller chain. Additional Information: OK cool. I have NEMA 24 steppers rated 425 oz-in. Is there some rule of thumb I can use to guess if that's enough? I'm not planning to push against hard stock material.

I got the plans and hardware from you guys and im almost ready for the stepper motor part of this build. what size motors are good to use for this build? the size of cnc will be 2x4 when finish or what size will not work? thanks

We recommend our electronics combo for the scratch build kit, which you can find on our site here: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo. This is our standard general purpose 3 axis electronics system, and includes (3) NEMA 24 425 oz-in stepping motors, (3) Drivers (3.0Amp 24-40 Volts, with 1-1/64 microstepping), (1) 36v 8.8a Power Supply, (1) Interface Board either USB or Parallel. (The USB version requires PlanetCNC software; the parallel interface board gives you a variety of options, Mach3 being one popular choice.)

I am looking at one of your electronics packages as a replacement for my excisting electronics. I have a old table top CNC that has a bad electronics pack, but the motors, and the mill are in good shape. could your system be adapted to work in this case?

Depending on the type of motors and connection type, you could adapt your motors to work with our electronic packages, but you will receive additional motors since our kit is complete. Now you will have to take into affect the actual motors you have and compare or get accurate replacements(Ex. our 425 oz motor(1/4" input shaft) will have to be same size or similar entry holes) Your Controller board will be the major issue, due to its wiring and processing manner, you can view the connections for our breakout boards to compare with yours! (parallel: https://www.buildyourcnc.com/item/electronicsAndMotors-parallel-breakout-relay#prettyPhoto/2/)(USB: https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-USB-Controller-Breakout#prettyPhoto/2/) Email(customerservice@buildyourcnc.com for further help)

I am interested in building a computer controlled table saw fense. Do you have any products that could help me.. Thanks

Yes, to build a computer controlled table saw fence, you can try the following: Assuming that the fence can already move, add a motor on both sides coupled to either lead screw or chain mechanics. Lead screw would be the best solution. The lead screw nuts would be mounted on the fence aligned with the motor shafts at the front and back of the fence. I would recommend the 425 oz-in stepper motors and 3.0Amp drivers for each motor. You will need a power supply rated for 24 volts. There is no need for a higher volt power supply. Interface the drivers to the computer using a USB interface, or a parallel breakout board. Stepping motors: https://buildyourcnc.com/category/nema Drivers: https://buildyourcnc.com/category/driver CNC Motion Interfaces: https://buildyourcnc.com/category/breakout Measure the length of travel and get lead screw twice as long since you will need lead screw on both sides. Add a bit more length for space that will be needed for the mounting. Plan as much as you can before purchasing. Lead screw: https://buildyourcnc.com/item/mechanical-leadscrews-lead-screw-!5-5-starts-10-tpi Lead nut (antibacklash nut): https://www.buildyourcnc.com/Item/mechanical-leadscrews-antibacklash-nut-!5-5-starts-10-tpi Additional Information: 555 Additional Information: 555 Additional Information: 555

I am going to build a CNC 4x4 plasma table. The frame is made of 1 1/4" pipe and the gantry will be made of either 2"x 2" or 2"x 3" tubing. What size stepper motors do you suggest?

We recommend our electronics combo for the scratch build kit, which you can find on our site here: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo. This is our standard general purpose 3 axis electronics system, and includes (3) NEMA 24 425 oz-in stepping motors, (3) Drivers (3.0Amp 24-40 Volts, with 1-1/64 microstepping), (1) 36v 8.8a Power Supply, (1) Interface Board either USB or Parallel. (The USB version requires PlanetCNC software; the parallel interface board gives you a variety of options, Mach3 being one popular choice.)

I am building the CNC demonstrated in your published book 'Build Your Own CNC Machine', 2009. You sell the 3 axis electronis combo, parallel, for $390. Is this the package from the book. Or are there other recommendations. Thank you, Hary Holstein

The CNC router build from book "Build Your Own CNC Machine" uses the basic electronics combo kit that includes three 425 oz-in motors is the kit designed for that machine. Here is a link to that electronics package: https://www.buildyourcnc.com/Item/electronicsAndMotors-3axis-425-elcombo

I am building a machine and don't know which steppers to use. Machine specs are: plywood frame, SBR25 rails, 96"X48" work area, rack and pinion for X and Y axis (2 motors with 2 racks for X axis), about 3:1 reduction ratio with belt drive. I plan to work on wood, acrylics and aluminum. Thank you!

We would recommend using the heavy gantry electronics combo, using 2 - 425 oz-in motors(NEMA 24) and 1 651 oz-in motor(NEMA 34), with a additional 651 oz-in motor/6.0 amp driver for the x-axis, and that will leave the two NEMA 24 motors for your y/z-axes. The larger motors will be beneficial for the x-axis for the dual motor control and increased torque.

How many revelolutions nema 23 425 oz

The number of revolutions for a stepper motor is infinite as long as the stepper motor coils are being engaged by the driver and that the driver is being sent pulses and that the driver has sufficient power to engage the coils. With that said, all of our stepper motors have 200 steps per revolution, which may be the answer you may be seeking. The steps per revolution can be increased by microsteps using the driver. In some drivers, this can be as much as 256 microsteps which brings the steps per revolution to 51,200 steps.

Hi please could you tell me how to work out the size required for the stepper motors ? which kit to get thanks

The size of motors required for your machine build will depend on many characteristics of the machine. If the machine uses a gantry (rather than moving the table bed) and the weight of the gantry (specifically with inertia), The mechanics used with the axes, lead screw, roller chain, timing belt or rack and pinion. Generally you will need less torque if using lead screw due to the mechanical advantage, but friction is important to consider. If you are building a 4'x8' or larger machine, it would be best to use: https://buildyourcnc.com/item/electronicsAndMotors-3axis-heavy-gantry-elcombo Otherwise: this electronics: https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo should be fine for most configurations. If you feel that you need extra torque on the z-axis (the z-axis will use a very heavy spindle, for instance), use this electronics: https://buildyourcnc.com/item/electronicsAndMotors-3axis-651-elcombo

Correct kit of motors and electronics, I bough a book in Amazons kindle to build a CNC, this book mention a kit of motors and electronics for parallel port, I want to use USB, can you suggest me the correct kit fot this machine.

Dealing with our scratch Build kit/BYO CNC Book Kit, you will use our basic 3 axis electronics kit (https://buildyourcnc.com/item/electronicsAndMotors-3axis-425-elcombo). Now dealing with the Breakout Board, the book specifies the parallel port BoB, but you can use the USB BoB and use Planet-CNC rather than using Mach 3 or Linux-CNC as your control software.

Can I use one motor drive 6A and conect 2 motor nema 24 425oz-in?, Can I do that??

Connecting two motors to a single, larger current driver, is not recommended. Theoretically, this may not be an issue; however, problems could occur where one of the motors draw more current than the other due to some external forces or friction and one of the motors stalling as a result. If you need to have two motors turn in a synchronous way as a single axis, connect the two drivers to the same axis signal (the same step and direction pins from the breakout board).