[ger21]

The 350ipm cut does not look 3.5x faster.
I'd do the same thing with longer, straight cuts.

[davida1234]

The 350ipm cut does not look 3.5x faster.
I'd do the same thing with longer, straight cuts.

I don't know. That is what was set for speed. Will re-run with longer straights.

That slowing down at every radius change really bothers me with UCCNC a lot and
might contribute to that. I would almost call this a beta software if that's all it can do.

If I could, I would switch back to Mach3 as I always could get precise-enough-for-me
cuts in Mach3 for seven or so years but my Windows 10 is too upgraded for Mach3.

[ger21]

If I could, I would switch back to Mach3

What's stopping you?
Install Mach3, and the plugin for your controller. Mach3 runs fine on any version of Windows 10.

[davida1234]

What's stopping you? Mach3 runs fine on any version of Windows 10.

I thought Mach3 runs only on older versions of Windows 10.

Weren't there warnings on forums that it will run only up to a certain version?

[davida1234]

Unfortunately, a very shaky video as I had placed the tripod this
time on the pull-out PC shelf. Stabilization didn't help much either.

Again, as Gerry had mentioned previously, this is cut with UCCNC which
slows down at every radii so the feed differences might not be too discernible
as there are only short straights but the numbers on the software are correct.

Full-depth cuts of 18mm Baltic Birch plywood.

Feeds: 50/75/100/125/150 ipm

1/4" 2-flute upcut CMT bit at 0.71" doc, 18,000 rpm:

https://youtu.be/Jw6fOnmeurk

[davida1234]

Can you post a picture of the birch showing the difference of edge quality at the different ipm? Also did you change spindle speed with the different feed rates? I'm just curious to see if there is any noticeable difference in the different slots you cut.

The spindle is not software controlled yet so, all speeds are 18,000 rpm.

I could not notice any discern-able differences in cut quality at various feeds.

Here are the close-ups of the channels:
Attachment 422778

Attachment 422780

Attachment 422782

And here are the "B"s:


Attachment 422786

Attachment 422788

[GME]

I could not notice any discern-able differences in cut quality at various feeds.

If you machine is slowing down for radius cuts at all speeds, I'd be surprised to see any difference in cut quality. No matter what your setting for IPM, your machine is probably maxing out at a speed less than or equal to the lowest IPM setting. That would certainly explain why all cuts look like they are running at about the same speed.

On the question of Mach3, I ran the latest version of it with the latest version of Windows 10 without a problem. I migrated over to Mach4, but not because Mach3 didn't run under Windows 10. If you like Mach3 better, I don't know of any reason why you couldn't go back to it. If you want further confirmation of compatibility, look at CNC Router Parts/Avid CNC (Avid) Plug & Play electronics. Avid provides preconfigured Mach3 XML files for their systems and doesn't yet support Mach4, or any other control software. There are no limitations on the Windows operating system.

You might want to consider an upgrade to Mach4. I have been happy with it.

Gary

[davida1234]

If you machine is slowing down for radius cuts at all speeds, I'd be surprised to see any difference in cut quality.

Thank you Gary.

I am new to UCCNC and from what I can see, it slows down just for the
transition point and then picks up with the speed again during the radius
cut. I think you can see that on the fastest slot cut (the last one).

Anyway, I am used to and comfortable with Mach3 and find that the
UCCNC has quite a bit of settings I probably will never utilize.

If they could find a solution to the slow down, I could live with that but it
doesn't look like they have it yet.

[davida1234]

Quick question:

Just went to UCCNC site. Is this the plugin to download despite the warning with the XP?

[OlfCNC]

My experience is that Mach3 runs fast mostly always because it just don't follow the toolpath properly. It erases lots of details when machining reliefs at high feedrates.
Try to machine that butterfly with mach3 and you will see the difference. I mean it will be fast, but the result will be much worse than with UCCNC.
It might be not a problem with that butterfly though if the rougher finish is not a problem, but machine for example a pocket for a bearing with high feedrate and you will see the issue with the tolerances.

You read that XP warning incorrectly, it is not a warning, but that you only need point 6. download to be installed if you running Windows XP operating system. If you running other operating systems then you do not need to install point 6.

[Ntl]

Unfortunately, a very shaky video as I had placed the tripod this
time on the pull-out PC shelf. Stabilization didn't help much either.

Again, as Gerry had mentioned previously, this is cut with UCCNC which
slows down at every radii so the feed differences might not be too discernible
as there are only short straights but the numbers on the software are correct.

Full-depth cuts of 18mm Baltic Birch plywood.

Feeds: 50/75/100/125/150 ipm

1/4" 2-flute upcut CMT bit at 0.71" doc, 18,000 rpm:

https://youtu.be/Jw6fOnmeurk

If I were you I'd back off the doc I think you will get a much better quality of cut. Right now you're going 3x the diameter of the endmill with a full slot tool path. Try backing it off to 0.25" and see if the"chatter?" marks go away in the radius area of the cuts. If you back off the doc you can increase the feed rate just pay attention to keeping the proper chiploads. The end result should be a better cut quality and less strain on the endmills, spindle bearings and everything else. Just some things to try, I'm by no means a expert so anyone with more real-world experience than me feel free to correct me if I'm wrong, I'm always looking for tips on how I can be more efficient since I'm still new to CNC routing.

Dan

[ger21]

The current version of Mach3 available for download works with the latest versions of Windows 10.

https://www.machsupport.com/wp-conte...rsion3.043.exe

Yes, get the plugin from their website.

Again, as Gerry had mentioned previously, this is cut with UCCNC which
slows down at every radii

It doesn't slow down at every transition. In your full depth cuts, I only notice it slow down twice.

If they could find a solution to the slow down, I could live with that but it
doesn't look like they have it yet.

CNC Drive is aware of the issue, and will address it when they start on the new planner, after the next lockdown release.

To me, it's a minor issue. It doesn't affect cut quality, and on a fast machine like yours, it has minimal impact.
The better accuracy over Mach3 more than makes up for it to me.

Anyway, I am used to and comfortable with Mach3 and find that the
UCCNC has quite a bit of settings I probably will never utilize.

UCCNC and Mach3 are about as similar as you can get, and both have very similar settings. Mach3 actually has a lot more.

[peteeng]

Hi David - In the UCCNC config tab you can adjust the width of the allowable "roadway" that the tool will travel down. So adjust some of these until you get the speeds you want. The faster the required speed the less the accuracy however. You set the roadway with UCCNC then it's the motion controllers job to keep the tool on the road so to speak. Peter

[davida1234]

Thank you guys for all the thoughts and suggestions.

I think I am being too impatient to explore UCCNC's strengths and too resistive to adopt to a few new things.

I will stick with UCNC and try to get proficient at it.

[Arjay]

Thank you guys for all the thoughts and suggestions.

I think I am being too impatient to explore UCCNC's strengths and too resistive to adopt to a few new things.

I will stick with UCNC and try to get proficient at it.

Good. Then you can pass the knowledge on to me.

[davida1234]

As suggested by Gerry, I reran the 1D and 3D cuts in
straight lines to better show the speed differences:

https://youtu.be/TrPZf2eHUF0

[davida1234]

A few close ups:

Attachment 423152

Attachment 423154

[Ntl]

As suggested by Gerry, I reran the 1D and 3D cuts in
straight lines to better show the speed differences:

https://youtu.be/TrPZf2eHUF0

Just curious why doesn't it rapid in between the cuts? Or do you have your rapids set really low? Just curious since I don't use UCCNC.

[ger21]

I don't think those are rapid (G0) moves, as they are slower than the cutting speed.

[Ntl]

I don't think those are rapid (G0) moves, as they are slower than the cutting speed.

Would that have to do with the cnc file PP or something else? I'm just curious because when I run a part my machine rapids in between cuts but I didn't set up anything for the moves. I'm guessing it's how my Vectric PP is set up? I'm still learning so it has me wondering how you set up the G0 moves? I was also wondering if he has his rapids set low like 100ipm and those were G0 moves? Just wondering so if I ever wanted to slow my machine down in-between cuts for some reason I would like to know where to look at doing it.

Thanks Gerry for any info,
Dan