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I found that turning off the PID spindle control works well for threading. It doesn't matter what S true compared to the request RPM, it still threads OK. No need to use the VFD in manual mode. In...

I take a .25 depth of cut with a 1/2" end mill at a reasonable feed rate?

At what WOC?

In wood or plastic yes, in steel NFW.

I can get 100 rpm down low but I'm sure the torque isn't great. I machined some 6" diameter cast iron at 250 rpm and even with what I thought was a light cut stalled the motor. So more torque would...

Thanks for the vfd settings. That addressed most of the problems. My max rpm on the lathe is 2400 at 120Hz so I don't think I have the larger pulley. I got it tuned pretty close without using mach 3...

S/N - 14097
at 200 rpm 10 hz

09 - 1 accel time in 0.1 units
10 - 1 decel time in 0.1 units
14 - 230 auto torque compensation gain in 0.1% units
15 - 230 auto slip compensation...

I have the last version of the VFD Patriot, but only can go as low as about 250 RPM or the motor gets real unstable in speed. Below around 200 or lower the VFD will stop showing an error. Are there...

I have to believe the type of machine as a lot to do with this threading demo. Can't see how a shoptask with only one index pulse and both the spindle and steppers that have to accelerate from a dead...

Nice video. He could sharpen the drill bit one side is cutting more than the other. I have a MT3 tools holder as well. Much nicer to use than the tailstock. I don't have to read the dial and it makes...

I was going to build an simple electronic tool setter for a lathe by just isolating a machined rod mounted in a the chuck and having the tool tips slow contact the rod completing a circuit and...

I just installed one a Temco switch from ebay and it get great results that don't vary more than 0.0002" on my Patriot's DRO and that's when homing at 37.5"/min! There will be more variation from...

I made this steady rest adjuster and threaded them LH M8x1.25. I used 4 tools with out removing the stock and it was pretty easy. This is the 1st time I ever to the trouble to setup the tool table....

My Patriot cuts great thread easily. He asking about cleaning up existing threads. Why don't you explain an easy way of doing that? Yes you can do it but it I haven't found an easy way. It isn't a...

I don't know of an easy way to sync up the thread.

I have done it once by using a Casio camera set to high speed mode. I started the X off too big and ran a thread pass with the right parameters....

What type of switches did you use and what is the repeatability of the switches? Do they work well enough to get to +- 0.0005 or better?

How can you learn about the machine if it doesn't work correctly as received and if you modify or fix it to work you invalidate the "warranty?"

I had some minor problems and some disappointing...

Unless you buy a new machine with a service contract at a much greater cost, I think you have to expect some problems that you will have to solve yourself.

That would be great for the community. Just sticking to the facts on your machine should be within the guidelines. Let the readers draw whatever inferences about other units by themselves.

Interesting that this thread seems to have a least one post deleted due to not conforming with the rules. I found that post informative about the machine he received. However the poster may have over...

What is function of the pulley device attached to the machine?

That's great for a 3 jaw. I wish I got one of those :)

As for the tail stock it is 0.0025 high at any distance. More to the tail stock alignment that at one position. How about when the ram is...

I have a question. Unless you 3 jaw chuck has zero run out how did you insure that the threads and face plate are concentric with the bearing race?

I have about 0.003" run out on my 3 jaw. It was...

I think I can do that on the older Patriot without any problems, although I would probably take bigger cuts. I did have to tune the motor parameters to get better repeatability. I used the same...

I have my a axis is moving at 20 inches per minute. However to do so I have to still manually accelerate or it will lose steps.

I haven't added any weight yet, but plan to do so. I don't use the A axis for machining either, just to reset the Z axis height. The A axis is far from stable enough, each time I move it the tram...

Does anyone know the weight of the Patriots upper assembly that goes up and down on A axia? Also any ideas where the center of Mass is going left to right? I'm thinking of adding a gas spring to...

6 small cross section rods on the mill turn isn't that stiff in the Y direction. each rod increases the stiffness additively, but increasing the cross section increases the stiffness by the cube.
...

Nice to know what are the dimensions and pricing on it?

What I am planning to do is similar to what the previous model did. But I will build a much stiffer 5th column, a 3x5x0.25 tube that bolts onto the tailstock's base and replacing the flexible black...

I see that the machine is spec. to use 3 phase power. Does that rule out using it with 1 phase power without a rotory convertor or maybe a VFD drive for each motor, which would be at least 4 of them?

Any dimensions and the types of parts you are using would be appreciated.

For 3d machining I would think that reducing the X and Y backlash would also be needed. I'm getting about 3 thou on them....