Estimated time worked great on old Mac. On new Mac - way off

LightBurn Software Questions
1

I have been using LightBurn for years now, with a Dutch BRM Laser machine.
On my former iMac, the estimated time for a project was very close,
only a few seconds off, at the most.
The iMac died and on a iMac mini (Intel, almost the same specs as iMac),
same LB version, BRM laser, settings, library and so on, the estimated time
is way off.

Eg : For a small 3 cm x 3 cm engraving (fill) LB now gives 1,03 seconds.
Real time is : 3,07 seconds.

Before, on other Mac, LB gave 3.05 seconds. I know because I keep
records of every file I engrave/cut for calculating prices and so on.

Reading the machine settings does not change anything, and in fact,
I never read those on the other Mac.

Any possibility this has to do with the OS version of the Mac.
Old Mac : Big Sur
Newer Mac : Sequoia 15,3

Any help would be appreciated, the preview function was so handy
to give an estimate to the customer.

2

Check out this video to manually adjust the preview simulation setting.

HTH.

2 Likes
3

Thank you, but already tried this. And on the old computer, I never did
this but still nearly correct estimate job time.

Very weird, I know.

4

Do you still have access to the old computer? Perhaps bundles will solve your issue.

5

I once thought my time forecast had also gone wrong, it turned out I was using a different unit of measurement. I fixed it and let LB retrieve the information from my Ruida and everything was fine again.

2 Likes
6

Thanks, but the old iMac crashed… to the ground.
The screen was bend and seriously broken. With CMD T I could
retrieve data from the drive (although I have cloud backups) but
not run any software anymore. A bit of a shame, really.

@bernd.dk
what do you mean unit of measurement?

mm/sec in settings? - is OK.
mm in file settings - also OK.

And I had a backup of the settings for my laser and library. I always do.
IT-dude… I know, it is a disease… haha.

7

yes that’s it, it says inches but should have been metric. When set correctly I get very precise timing calculations.

8

Well no solution yet. I can read the settings of the RD controller, and the estimated time is still way of. For now I use 65 percent of the “world time” settings to get close to the real time of some small projects.
I probably will need to try with a larger file where a lot of engraving happens,
bitmaps and fills.

9

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