Don’t underestimate power of these dpssl machines… they can be quite potent…
Not to add fuel to my dumpster fire but following the logic of the 24,000mm line here is a 375mm line from my machine.
- 375 * 64 = 24,000mm
- .9375 sec * 64 = 1 minute
Video is shot @ 240FPS and is slightly over 1MB and around 1.229 seconds long, demonstrating engraving on cardboard; 26,000mm/m @ 15% power.
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LASER BEGINS ENGRAVING @ 00.050
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LASER STOPS ENGRAVING @ 01.224
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LASER FULLY OFF @ 01.229
1.229 - 00.05 = 1.179 sec total engraving
I believe this is roughly 19,084mm/m, 375mm completed in 1.179
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Math check here
Speed Distance Time Calculator -
Download link for video
26000mm.mp4 - Google Drive -
Video link for watching
July 12, 2023 - YouTube
Let me know your thoughts… other than “hey thats only running at 3,000mm/m” lol
I think I can bump the settings a bit more, aiming for the .9375
That’s insanely slow, not sure what potato your using.
I was not able to check the video in detail, just want to mention that it is a huge difference if you send one line to the laser (one command) or a vector / image engraving line (many subsequent commands). So, there will be a huge difference in “theoretical speed” (one command, your video) and “usable speed” (multiple commands as are used in a normal project). At least that’s what I would expect.
I’m curious if this really makes a difference. Maybe you can try this project and cut both lines one after another (use “cut selected graphics only”).
2023-07-13 LineTest.lbrn2 (101.1 KB)
If I use the grayscale line, it generates about 440 movement commands, if I use the single line, it’s one.
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Now you’re presenting evidence! 
Ripping the video apart produces 307 frames:
ffmpeg -i 26000mm.mp4 -f image2 -q 1 'Scan Speed - '%4d.jpg
The laser turns on in frame 2 and off in frame 295, so the elapsed time is:
1.221 s = 293 frames / (240 frame/s)
Covering 375 mm in that time:
307 mm/s = 375 mm / 1.221 s
18430 mm/min = 307 mm/s × 60 s/min
As @misken points out, a vector line will produce different timing than an engraved line, because engraving / filling allows acceleration and deceleration beyond the line ends. The unlit motion suggests this is an engraved line, so the motion should be constant throughout the lit portion.
However, the machine may need more overscan distance or higher acceleration to reach the set speed during the entire line.
Looks good!
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