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We have a Shopsabre router from somewhere around 2010 running wincnc 2.6 and we are having some serious issues with G code from Fusion 360 running really slow. In many ops F360 outputs many small...

We are moving our business to Puerto Rico and I figured it would be easier to find equipment there than to ship it there. I have heard of a lot of companies leaving and with the economic status I...

First I have to say it's annoying the only DIY section is in the woodworking section. I wasn't sure to post here or in the general metal workign section. Since I have a metal cutting machine I wasn't...

I would really like to get a 3d scanner setup. I have seen a couple used pro units go for a reasonable price but still a mighty big stretch for me.
I have heard things like David and Scenect are...

Coolant usually isn't needed with composites and traditional cutters. Heat isn't much of an issue and wear is almost completely attributed to the abrasive nature of the fiber.
When we would use...

Any suggestions for a good optical sensor for the application? More importantly would linuxcnc be able to use this data for the purpose I want?

I am just starting to build a CNC machine. I am a pretty devote Linux user so I'm pretty set on using LinuxCNC even though I currently have no experience with it.

I am going to try making a...

The issue is that you really want to have that RPM available.
I just ordered a 36v power supply and that controller so I can play with it a little bit and see what this motor can take. I am...

That is awesome info about the dongle. Do you have a link to a page or a thread or anything? I found several threads but none that had easy speed control. I was going to try to get a programmable ESC...

Yes this is actually an area of very close familiarity for me from my background in building machines. I was heavily involved in the fabrication, machining, inspecting and truing of these precision...

I have also been reading up on using outrunner RC motors for the spindle motor and I think I'm going to try it. I have a 900 kv 200 w motor that I'll probably try to start out with. If I like the way...

All of the square tube would be 1/4" wall steel.
The tubing will give it much more strength and rigidity than thinner solid material will.
The main reason I went with thick large tubing is because...

So it's still pretty rough and completely hypothetical but I revised my plan a a little bit and came up with a slightly more detailed model.
I switched the X and Y so the gantry goes lengthwise and...

On most of the spec sheets I have looked at I haven't seen these numbers. Is there a general rule of thumb? Like if I get a screw 100mm longer than my desired travel will that be enough?

Good info.

One thing I haven't figured out yet is exactly how the ballscrew length is measured. Is it the full length of the threaded section? The entire length of the whole rod or the length the...

I looked up the precision Acme rod on Mcmaster though and it says
I just found Ultra-Smooth Corrosion-Resistant Threaded Rods and Nuts but they only say
C7/T7 is supposed to be .002"/foot. Is...

I am pretty particular about how things are phrased because little changes can actually make a world of difference to the end result or how someone says something.
If the above had been what was...

As I explained above I used those units to represent the units in the calculator. It was not to get accurate numbers but to get an accurate comparison between a couple fixed data points.
It...

This is horribly oversimplified and incorrect logic for any motor.

First we have to look at what actually does work. Torque does not do work, torque applies a twisting force. Horsepower is what...

Ok thanks for the input guys. I think this gives me enough food for thought for now.
I will do a little thinking and post up when I get confused again.
I think I will do a slight redesign. I like...

So with a direct drive and a 4mm lead screw (which is as low as I could find) still puts me at 125 IPM.

Seems like I could still gear that down quite a bit. I guess more importantly is could I...

Thanks for the info guys. I'll have to go through all that info on ballscrews when I get some time but the pitch or lead is really what I needed.
So for intents and purposes I could use 800 RPM as...

This seems so weird.
If I could just find max RPM or even better torque/RPM graphs for the motors and thread pitch on the ballscrews I could start figuring out what kind of gearing I want. Very few...

Ball and screw seemed the most practical to me but I am open to other suggestions.

What size motor should I be looking at for direct drive of ballscrews on the X,Y and z?
Don't the ballscrews...

Would something like this be an acceptable starting point?
4 Axis NEMA 23 Stepper Motor 290oz in 4 Axis Board CNC Kit | eBay

And how about something like this for the spindle?
I have no idea...

Let's talk a little more about motors and controls because this is where I am the most lost.
What sized motors do I need? From what I understand steppers are the cheaper alternative so I'm guessing...

When I worked full time i fully would have agreed with you on the value of my time. Currently I have much more time than money so the scales balance much differently now.
On top of that I have...

Yes I had thought of that. Most of what I would do with steel would be able to be done with a plasma. It seems like it would be pretty easy to have an insert bed that kept the main surfaces clean.

Thanks for the replies.
The belt setup was just a quick implementation of general theory. If I went that direction I would add some idler pulleys to increase contact on the motor. Honestly I would...

Hey guys. New here so hi :wave:
In the last couple days I have gotten a huge hair up my * to try and build a mini CNC.
This will actually mostly be used for aluminum and I have some hopes to do...