Vectric Aspire makes a mess of a circle?

[Davek0974]

Interesting.

The one time i noticed it, i was doing a dummy run so had the feedrate turned up to max, it was very jerky on curves, thats what made me think.

I will need to do some more observing but at least i know now its probably just normal :)

[Ger21]

so had the feedrate turned up to max, it was very jerky on curves, thats what made me think.

This is a known issue with Mach3 and Feedrate Override. It works fine when below 100%. but it can cause jerky movement when turned up a lot above 100%.
I don't recall if there's a safe max to use, but I would keep it below 125%.

[Davek0974]

Excellent, i like known issues :)

At least there is a reason.

Thanks

[magicniner]

I ran a couple of parts earlier this week using Mach3 at 300% without noticeable jerkiness on the curves.
Different versions have different issues, mine doesn't seem to have jerky curves above 100% feedrate, I'll check the version but it's the one most recommended for general use on the Mach3 forum,

- Nick

[Ger21]

I think that the issue is PC dependent, and doesn't affect everyone. But it is an issue, and was confirmed by Art, the author of Mach3.

The Machsupport forum is down right now, but I'll try to find some more info when it's back up.

[Neale]

Does using a external motion controller make any difference - is the jerking only when using parallel port?

[John S]

Why do you use FRO at 300%?

Program the feed closer and just go up to 70 or 80%.

Most professional controllers won't allow more than 100%