3 Axis CNC router

[JoeHarris]

If it was me I'd go with 34 and run them on 70vdc and see what you get. 8nm should get you around 5-6mtr/min before saturation takes affect. Then if want little extra speed apply ratio to increase. 8nm will have enough spare power to handle the ratio.

Thanks for the patient explanation. Just so I'm clear are you saying 5-6m/min with 5mm or 10mm screws?

The things I have decided so far are:

> I want to use a csmio/ip-m
> I want to use it properly which means 3 motors and long belt on x
> I will use em806 drives on z and y with the 1605 screws I already have

The options are (all could be with or without ratio)

1. Stick with 2005 screws on x powered by 8nm nema 34 stepper and 240v drive
2. Stick with 2005 screws on x powered by 8nm nema 34 stepper and another em806
3. Swap screws for 2010 on x powered by 8nm nema 34 stepper and another em806

In order of preference I'm guessing you would say 3, 1, 2?

If I went with 2 as a starter I could see how it goes and swap out the screws in future... It's the only option which isn't insanely expensive!

[JAZZCNC]

Thanks for the patient explanation. Just so I'm clear are you saying 5-6m/min with 5mm or 10mm screws?

With 5mm pitch.

If I went with 2 as a starter I could see how it goes and swap out the screws in future... It's the only option which isn't insanely expensive!

This is why I'd go with the setup suggested. Easy to change up without costing the earth. If you make good job of alignment etc then you'll get 5-6mtr/min. Stick small ratio on and you'll get the speed up to point can cut most things.

[JoeHarris]

With 5mm pitch.



This is why I'd go with the setup suggested. Easy to change up without costing the earth. If you make good job of alignment etc then you'll get 5-6mtr/min. Stick small ratio on and you'll get the speed up to point can cut most things.

OK thanks Dean, sounds good. Tried to email chai to get best special price for some 2010s but email bounced... Wonder if he is still in business?!

Is 6mH inductance reasonable for a 8.7nm 34? i.e. this fella: https://www.cnc4you.co.uk/Stepper-Mo...15-4208-Nema34

[JAZZCNC]

OK thanks Dean, sounds good. Tried to email chai to get best special price for some 2010s but email bounced... Wonder if he is still in business?!

Is 6mH inductance reasonable for a 8.7nm 34? i.e. this fella: https://www.cnc4you.co.uk/Stepper-Mo...15-4208-Nema34

Drop Fred at BST automation on ali express message asking for quote. He's good guy to deal with.

Yes 6mH is ok for such large motor. I've used these and nice motors.