G’day assembled brains trust
Is there some way to work out what the actual axis maximum speed is? Reading from the controller I get 500mm/s for both x and y, but judging by eye I see no difference in speed from about 100mm/s.
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In my Ruida controller, all times from the last active job are shown in seconds and ms.
When I test different shapes, it gives me a good indication of when I have reached the machine’s (usable) top speed.
But be aware that if you have a single small shape, the acceleration time and de-acceleration time will quickly set the machine’s limits and will not necessarily give you a correct result in relation to a large object.
Thanks for the quick response Bernd
Where is that shown? How do I see that?
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On my controller Ruida (KT32N), the current job is displayed live with a running clock, on the main screen itself.
(That is, when I have sent the job from LB to my laser)
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As @bernd.dk observes, the machine cannot reach the maximum speed during most vector operations.
Feed the controller’s acceleration & speed settings into this calculator and it’ll show you the distance required to reach that speed:
Typically, the distance is so long that the only time the laser head can reach top speed is during engraving passes, where it accelerates & decelerates on each side of the pattern.
The X and Y axes typically have different acceleration & speed limits, in addition to overall limits for both cutting and engraving, all set within the controller and out of LightBurn’s purview. In general, the X axis speed will be limited to whatever the Y axis allows, so the motion between two points follows a straight line.
I’ll have a look at that.
Thanks for the reply @ednisley
I might just create an etch that is about 500mm long and see what comes up in the panel as suggested by @bernd.dk . This question is more an idle curiosity than anything else.
Thanks for the suggestions
Cheers
Pete
This extensive discussion about measuring the actual speed (and why random claims are typically worthless) will take your mind off all your other problems for a while:
Yeah, I was interested in getting something closer to accurate so that when I do a preview the theoretical time would be closer to the actual time, but I think it is an exercise in futility. I will just do what I’ve been doing up to now and see the preview time as roughly accurate.
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