Scoring at two different speeds in one project

I have a project that has a detail that jerks when the laser moves too quickly and it causes the rest of the design to shift. I’ve separated out that bit in the file so I can slow just that part down and still score quickly for the rest, but is there any way other than trial/error to match the look of the score? So if my original score was at 500/20, and I want it to slow down to 100 for one part, is there any math formula to make the two look the same? I tried proportional with 100/4 and it was way too dark and it burned.

I really don’t want to score the whole design slowly, since it’s already 30 minutes at 500, I just want to slow down the one part.

I don’t know of any simple formula to quickly determine what would look the same. I suggest running a couple of tests at the slower speed on some scraps until you have dialed it in. Don’t slow the speed from 500 to 100. Try a smaller change in the speed increment until you stop the shifting, then adjust the power to get the right look.


I’d just slow the whole job down and suck it up.


what @evansd2 said.

if you do that, you can increase the power to the score to make it look more similar to the faster score time.


Thanks, yeah I just had to go with trial and error. Turns out 200/3 looks pretty close to 500/30, but I haven’t tested to see if that scales and I could do 200/8 to match 500/80.

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No, this needs to be opposite. Decreasing speed means decreasing power to match the faster speed and higher power scoring.

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Did I spend more time figuring out the correct settings than I saved by keeping the speed high for most of the design? :laughing: I needed to do the thing 3 times, so I’m already at 90 minutes- Now I am tempted to see how much time it would take with the whole job at 200/3, and if the 20-30 minutes I spent figuring this out was worth it…lol!


ah, yes. sorry, i was probably a little distracted earlier today.

Yeah and I just realized I was kinda rushing too. What I meant by “suck it up” is that for me, a consistent end result is my top priority. I’d rather set up a longer single job and let it run than try to match the score quality, which will be really tricky to get it perfect.

Of course that’s fine if it is a one off hobby thing but if you’re really trying to shave off time to do larger production runs I can totally see why you’d be looking to get the total job time down.

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The design shifts because something is not properly tied down. I have had that problem, but did not understand that at the time, and slowed the cut. Having perspective on the time taken is something some folks have a problem with. Engraving that takes more than four hours or 3Dprinting that can take days, and from that perspective 90 minutes is quite quick.

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